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Peer-Review Record

Impacts of the COVID-19 Pandemic on Food Security and Diet-Related Lifestyle Behaviors: An Analytical Study of Google Trends-Based Query Volumes

Nutrients 2020, 12(10), 3103; https://doi.org/10.3390/nu12103103
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Nutrients 2020, 12(10), 3103; https://doi.org/10.3390/nu12103103
Received: 10 September 2020 / Revised: 5 October 2020 / Accepted: 7 October 2020 / Published: 12 October 2020
(This article belongs to the Special Issue Nutrition within and beyond Corona Virus)

Round 1

Reviewer 1 Report

Thank you for allowing me to review this contribution entitled

“Impacts of the COVID-19 pandemic on food security and diet-related lifestyle behaviors: an analytical  study of Google Trends-based query volumes”

In general, the topic of research and the approach of the study are interesting.

There is consistency among research title, the research question/goal and contribution/answers for research questions but I suggest some changes to incorporate in the document, specially for a greater interest in the area of dietary habits / behaviors

Introduction

L67 It would be interesting to add a reference on how the internet and social networks influence dietary and healthy habits.

L74 to L100 are repeated

Materials and methods

L120 It would be convenient to include if the search and download date coincide, as suggested by Nuti et al and the authors referenced

L124 It is necessary to better justify the keywords used in each category. Specially in those related to Dietary behavior

Results

L 158 It’s not mentioned if there are differences between countries for the Diet-related lifestyle, as it appears in the rest of the categories.

Discussion

L212 The authors refer to “ For those who remain relatively healthy,..” but I understand that the health status of those who have carried out the searches is not known.

In general,  it is surprising that  the authors did not use search terms related to food, food patterns or type of diets (plant-based, weight loss diets, ...) distribution of meals, in addition to food delivery, shopping online, etc. They mention (L250) studies where questions of this type are addressed to know changes in dietary behaviors (Aman et al).

Likewise, the limitation in language, as they indicate in L281, is especially important when comparing results by countries.

Bibliography

Check the correct citation of reference 6.

Author Response

Reviewer 1 comments:
Comments to the Author:

Thank you for allowing me to review this contribution entitled “Impacts of the COVID-19 pandemic on food security and diet-related lifestyle behaviors: an analytical study of Google Trends-based query volumes”. In general, the topic of research and the approach of the study are interesting. There is consistency among research title, the research question/goal and contribution/answers for research questions but I suggest some changes to incorporate in the document, specially for a greater interest in the area of dietary habits / behaviors.

Response: Thank you for your positive response to our work and we have address those comments accordingly.

Introduction:

Point 1. L67 It would be interesting to add a reference on how the internet and social networks influence dietary and healthy habits.

Response 1: Thank you for your suggestion. we have added two new references for line 67 sentences as below:

” The accessibility of the internet and the rise of social media have affected our social lives and also our dietary and lifestyle behaviors”. (Page 2, Line 67-68).  

  1. Pollard, C.M.; Pulker, C.E.; Meng, X.; Kerr, D.A.; Scott, J.A.J.J.o.m.I.r. Who uses the Internet as a source of nutrition and dietary information? An Australian population perspective. 2015, 17, e209.
  2. McGloin, A.F.; Eslami, S.J.P.o.t.N.S. Digital and social media opportunities for dietary behaviour change. 2015, 74, 139-148.

Point 2. L74 to L100 are repeated

Response 2: Sorry for the careless mistake we have made. We deleted repeated paragraphs in introduction section (Page 2, Line 74-100)

Materials and methods

Point 3.L120 It would be convenient to include if the search and download date coincide, as suggested by Nuti et al and the authors referenced.

Response 3: Thank you for your comment. we have added this information in Materials and Methods section: 2.2 Data acquisition as “Google Trends (https://trends.google.com.tw/trends/?geo=TW) was used to obtain worldwide relative search volumes (RSVs) covering a timeframe from before the COVID-19 pandemic (1 June 2019 to 27 April 2020) and the data download was on 31 April 2020 covering a time period of 1 June 2019 to 27 April 2020.” (Page 2, Line 82-85).

Point 4. L124 It is necessary to better justify the keywords used in each category. Specially in those related to Dietary behavior

Response 4: Thank you for your comment. Prior to identify the included keyword in each category, we have searched several keywords in Google Trends platform to understand what is the global search interests related to changes of dietary behavior and lifestyle during COVID-19 pandemic, which can be seen in the Supplementary Table 2 as following:

Supplementary Table 2: Search keywords used in regional languages

USA/UK/Singapore

Philiphines/

Nigeria

Spain

Italy

France

Saudi Arabia

Japan

UAE

South Korea

Indonesia

Malaysia

Jordan

Taiwan

Vietnam

Food bank

Banco de alimentos

banca del cibo

Banque d'aliments

food bank

フードバンク

Food bank

푸드뱅크

bank makanan

food bank

بنك الطعام


食物銀行

Nguồn cung thức phẩm

Free food

Alimento gratis

cibo gratis

Nourriture gratuite

free food

無料の食事

free food

무료 식품/ 공짜 식품

makanan gratis

makanan percuma

free food

食物

 

Free meal

Comida gratis

pasto gratis

Plat Gratuit

free meal

無料の食事

free meal

무료 음식/ 공짜 음식

makanan gratis

makanan percuma

وجبة مجانية

 

Food shortage

Escasez de alimentos

carenza di cibo

Pénurie d'aliments

نقص الغذاء

食糧不足

Food shortage

식량 부족/ 음식 부족

kelangkaan pangan

kekurangan makanan

نقص الغذاء

糧食短缺

Thiếu hụt thúc ăn

Food safety

Seguridad alimentaria

sicurezza di alimentari

Sécurité alimentaire

Food safety

Food safety

Food safety

식품 안전

keamanan pangan

keselamatan makanan

food safety


食品安全

An toàn thưc phẩm

Food hygiene

Higiene de los alimentos

igiene di alimentari

Hygiène alimentaire

الصحة الغذائية

Food hygiene

Food hygiene

식품 위생

hygiene makanan

hygiene makanan

الصحة الغذائية


食品衛生

Vệ sinh thực phẩm

Food

Alimento

cibo

Nourriture

طعام

Food

طعام

식품/ 음식

pangan/makanan

makanan

طعام

食物

Thức ăn

Meal

Comida

pasto

Plat/ Repas

وجبة

Meal

وجبة

식사

makanan

makanan

وجبة

Bữa ăn

Breakfast

desayuno

colazione

Petit-Dejeuner

وجبة افطار

Breakfast

وجبة افطار

아침

sarapan

sarapan

Breakfast

早餐

Bữa sáng

alcohol

Alcool

alcool

Alcohol

الكحول

アルコール

alcohol

alkohol

alkohol

الكحول

酒精

Cồn

Restaurant

Restaurante

ristorante

Restaurant

مطعم

飲食店

Restaurant

식당

restoran

restoran

مطعم

餐廳

Nhà hàng

Delivery

Entrega

consegna

Livraison

توصيل

配達

Delivery

배달

pengiriman

delivery

توصيل

交貨

Giao hàng

Food Delivery

Entrega de comida

domicilio

Livraison de nourriture

food delivery

食品配達

Food Delivery

배달 음식

pengiriman makanan

Food Delivery

Food Delivery

外送

Giao hàng

take away

Comida para llevar

porta via

Plat  à emporter

take away

取り除く

take away

포장

makanan bungkus

bungkus/ bawa balik

take away

外帶

Take away

Recipe

Receta

ricetta

Recette

recipe

レシピ

recipe

레시피

resep

resepi

Recipe

食譜

Cách nấu

Cuisine

Cocina

cucina

Cuisine

cuisine

料理

cuisine

요리

masakan

masakan

Cuisine

烹飪

ẩm thực

Cake

Pastel

torta

Gâteau

كيك

ケーキ

cake

케이크

cake

kek

كيك

蛋糕

Bánh

Netflix

Netflix

Netflix

Netflix

Netflix

Netflix

Netflix

넷플릭스

netflix

netflix

Netflix

Netflix

Netflix

Nintendo

Nitendo

Nintendo

Nitendo

Nintendo

任天堂

Nintendo

닌텐도

nintendo

nintendo

Nintendo

任天堂

Nintendo

Play station

Play station

Play station

Play station

بلاي ستيشن

プレイステーション

بلاي ستيشن

플레이 스테이션

PS

PS

بلاي ستيشن

家用遊戲機

Play station

Cinema

Cine

cinema

Cinéma

سينما

シネマ

سينما

영화관

cinema

pawagam

سينما

電影

Rạp chiếu phim

Hotel

Hotel

hotel

Hotel

فندق

ホテル

Hotel

호텔

hotel

hotel

فندق

飯店

Khách sạn

Resort

Resort

resort

Resort

منتجع

リゾート

Resort

리조트

resort

resort

resort

度假村

Resort

Park

Parque

parco

Parc

حديقة

パーク

Park

공원

taman

taman

park

公園

Công viẻn

Plant

Planta

pianta

Plante

نبات

工場

Plant

식물

tanaman

tanaman

نبات

植物

Thực vật

flower

Flor

fiori

Fleur

زهرة

flower

bunga

bunga

زهرة

Hoa

Gym

Gym

Palestra

Gym

gym

ジム

Gym

헬스장

gym

gym

Gym

健身房

Gym

exercise

Ejercicio

esercitazione

Exercise

ممارسة

運動

exercise

운동

Olahraga

bersenam

exercise

運動

Thể dục

outdoor

Afuera

fuori

Dehors

outdoor

アウトドア

outdoor

야외활동

tempat terbuka

luar taska

outdoor

戶外

Ngoài trời

workout

Workout

workout

Workout

تجريب

いい結果になる

workout

운동

workout

workout

workout

重量訓練

Thể dục

Yoga

Yoga

yoga

Yoga

Yoga

ヨガ

Yoga

요가

yoga

yoga

Yoga

瑜珈

Yoga

sunbathing

Baño de sol

prendere il sole

Bain de soleil

تسفع

日光浴

sunbathing

일광욕

berjemur

berjemur

sunbathing

日光浴

Tắm nắng

cycling

ciclismo

ciclismo

cyclisme

cycling

サイクリング

cycling

자전거 타기/ 사이클링

bersepeda

berbasikal

cycling

騎腳踏車

Đạp xe đạp

Vitamin

Vitamina

vitamina

Vitamine

فيتامين

ビタミン

Vitamin

비타민

vitamin

vitamin

فيتامين

維生素

Vitamin

Vitamin C

Vitamina C

vitamina C

Vitamine C

فيتامين سي

ビタミンC

Vitamin C

비타민 C

vitamin C

vitamin C

فيتامين سي

維生素 C

Vitamin C

Vitamin D

Vitamina D

vitamina D

Vitamine D

فيتامين د

ビタミンD

Vitamin D

비타민 D

Vitamin D

Vitamin D

فيتامين د

維生素 D

Vitamin D

Vitamin A

Vitamina A

vitamina A

Vitamine A

فيتامين أ

ビタミンA

Vitamin A

비타민 A

Vitamin A

Vitamin A

فيتامين أ

維生素 A

Vitamin A

Vitamin E

Vitamina E

vitamina E

Vitamine E

فيتامين هـ

ビタミンE

Vitamin E

비타민 E

Vitamin E

Vitamin E

Vitamin E

維生素 E

 

Vitamin E

Vitamin B

Vitamina B

vitamina B

Vitamine B

فيتامين ب

ビタミンB

Vitamin B

비타민 B

Vitamin B

Vitamin B

فيتامين ب

維生素 B

Vitamin B

Zinc

Zin

zinco

Zinc

زنك

亜鉛

Zinc

아연

Zink

Zink

zinc

 

Kẽm

Iron

Hierro

ferro

Fer

حديد

Iron

Zat besi

Zat besi

حديد

 

Sắt

Selenium

Selenio

selenio

Sélénium

السيلينيوم

セレン

Selenium

셀레늄

Selenium

selenium

Selenium

Se

Turmeric

Curcúma

curcuma

Curcuma

الكركم

ターメリック

turmeric

강황

temulawak

kunyit

الكركم

薑黃

Nghệ

Garlic

Ajo

aglio

Ail

ثوم

ニンニク

Garlic

마늘

bawang putih

bawang putih

ثوم

蒜頭

Tỏi

Ginger

Jenjibre

zenzero

Gingembre

زنجبيل

ショウガ

ginger

생강

jahe

halia

زنجبيل

Gừng

Onion

Cebolla

cipolla

Oignon

بصل

玉ねぎ

Onion

양파

bawang bombay

bawang merah

بصل

洋蔥

Hành

Herbal

Hierba

erbacea

Plantes medicinales

Herb

ハーブ

Herb

약초/ 허브

Herbal

herba

أعشاب

草本植物

Thảo mộc

Omega 3

Omega 3

Omega 3

Oméga 3

أوميغا 3

オメガ3

Omega 3

오메가 3

Omega 3

Omega 3

Omega 3

Omega-3脂肪酸

Omega 3

cookies

Galletas

biscotto

Biscuits

بسكويت

クッキー

Cookies

과자

Cookies

biskut

بسكويت

餅乾

Bánh cookie

Bread

Pan

pane

Pain

خبز

パン

Bread

Roti

roti

Bread

麵包

Bánh mì

Pizza

Pizza

pizza

Pizza

بيتزا

ピザ

pizza

피자

Pizza

pizza

بيتزا

披薩

Pizza

Chicken

Pollo

pollo

Poulet

دجاج

チキン

Chicken

치킨

Ayam

ayam

دجاج

雞肉

Thịt gà

Herbal remedy

Fitoterapia

erbe

Phytotérapie

علاج عشبي

薬草剤

Herbal remedy

한방 치료/ 한방약

Jamu

ubat herba

علاج عشبي

草藥

Dược thảo

vegetables

Legumbres

verdure

Légumes

خضروات

野菜

vegetables

채소

Sayuran

sayur-sayuran

خضروات

蔬菜

Rau xanh

immunity

Inmunologia

immunita'

Immunologie

مناعة

免疫

immunity

면역

daya tahan tubuh

immuniti

vegetables

免疫

Miễn dịch

beer

Cerveza

birra

Bière

بيرة

ビール

beer

맥주

Bir

bir

beer

啤酒

Bia

take out

Eliminar

take out

Sortir

take out

取り出す

take out

포장

Bungkus

bungkus/ bawa balik

تخلص من

外帶

Take away

curcumin

Cúrcumin

curcumina

Curcumine

الكركم

クルクミン

الكركم

커큐민

Kunyit

kunyit

الكركم

薑黃素

Curcumin

weigh loss

Perdida de peso

perdita di peso

Perte du poids

weigh loss

減量

فقدان الوزن

체중 감량/ 체중 감소

Penurunan berat badan

penurunan/ kejatuhan berat badan

فقدان الوزن

減肥

Giảm cân

plant-based diet

 

dieta a base de plantas

Dieta a base vegetale

 

régime à base de plantes

plant-based diet

 

 

 

Diet vegan

 

Plant-based diet

 

 

Chế độ ăn thuần thực vật

Ketogenic diet

 

Dieta chetogenica

Régime cétogène

Ketogenic diet

 

 

 

Diet Keto

Ketogenic diet

 

 

Giảm cân keto

coffe

café

cafe'

Café

قهوة

コーヒー

coffee

커피

Kopi

kopi

قهوة

咖啡

 

fitness

fitness

Fitness

Fitness

fitness

フィットネス

fitness

피트니스

Fitness

fitness

fitness

weigh loss

 

aerobics

Aeróbico

'aerobica

Aérobique

التمارين الرياضية

エアロビクス

aerobics

에어로빅

Aerobik

aerobik

التمارين الرياضية

coffe

Aerobic

meditation

Meditacion

meditazione

Méditation

تأمل

瞑想

meditation

명상

Meditasi

meditasi

تأمل

 

Thiền

relaxation

Relajaxion

rilassamento

Relaxation

استرخاء

リラクゼーション

relaxation

휴식

Relaksasi

relak

استرخاء

 

Thư giãn

 

Results

Point 5. L 158 It’s not mentioned if there are differences between countries for the Diet-related lifestyle, as it appears in the rest of the categories.

Response 5: Thank you for your comment. We have added this sentence to the text. However, the top five search countries ranged across all continents from developed to developing countries (supplementary table 3). (Page 5, Line 146)

Suplementary Table 3. Top five countries in search keyword related to dietary and lifestyle behavior.

Keyword

Top 1

Top 2

Top 3

Top 4

Top 5

Restaurant

France

Switzerland

Germany

Nederlands

Spain

Delivery

Brazil

Philippines

Russia

UK

Sri Lanka

Food Delivery

Sri Lanka

Singapore

USA

Malaysia

Philippines

Netflix

Turkey

Brazil

Mexico

Italy

Spain

Recipe

New Zealand

South Africa

United States

Australia

Philippines

Cake

Indonesia

India

Malaysia

Singapore

UK

Nintendo

Japan

Germany

Spain

Netherlands

Mexico

Cuisine

France

Belgium

Switzerland

Canada

Spain

Hotel

Columbia

Spain

Mexico

Argentina

Austria

Park

United States

South Africa

Australia

New Zealand

Canada

Cinema

Brazil

Egypt

Italy

Romania

France

Resort

Russia

Thailand

Philippines

Bangladesh

Vietnam

Outdoor

Germany

Turkey

Switzerland

Brazil

Thailand

Exercise

Pakistan

Hongkong

Nigeria

India

Philippines

Gym

Mexico

Argentina

Spain

France

Sweden

Plant

Nigeria

Netherlands

Philippines

Belgium

Kenya

 

Discussion

Point 6. L212 The authors refer to “For those who remain relatively healthy,..” but I understand that the health status of those who have carried out the searches is not known.

Response 6: Thank you for your suggestion. We have deleted “for those who remain relatively healthy” from the text (Page 8, L189).
 

Point 7. In general, it is surprising that the authors did not use search terms related to food, food patterns or type of diets (plant-based, weight loss diets, ...) distribution of meals, in addition to food delivery, shopping online, etc. They mention (L250) studies where questions of this type are addressed to know changes in dietary behaviors (Aman et al).

Response 7: Thank you for your comment. To address question of changes of dietary behaviors during covid-19 pandemic, we initially search “dietary-related keywords” such as plant-based, weight loss diets, ketogenic diets; however, those keywords showed no significant trend, except in Vietnam. We found that Vietnamese had increased searched interests for “weight loss”.

Point 8. Likewise, the limitation in language, as they indicate in L281, is especially important when comparing results by countries.

Response 8: Thank you for your comment. In order to minimize the impact of “English as the major search keyword”, we include native speakers from multi-countries who translate the “English keyword” to their mother tongue, which can be seen in Supplementary Table 2. Using the regional languages, we found a similar global search interests during the early outbreak of COVID-19.  

Bibliography

Point 9. Check the correct citation of reference 6.

Response 9: Thank you for your comment. We have checked the reference 6 which is correct. This paper was written by a group of international co-authors so the authorship appears to be enormous (Page 10, Line 313).

Author Response File: Author Response.docx

Reviewer 2 Report

 Interesting article – wondered why they did not report in abstract/summaries more on vitamin D. 

In the introduction – first paragraph was repeated beginning on line 74

Was not familiar with the term “infodemiology”

Figures – found somewhat confusing.  What are the listings for example for Figure 1 C, D, E, and F.  --  is one column the highest search and then the lower case listing the search terms??  Needs to be better described.

Philippines with and s at the end

Consider putting the title of the Figures at the top (but may not be the journal style)…..confusing what you are looking at – have to search for the title.  Maybe use Figure 1A, Figure 1B instead of just A, B

Section 3.5 has an indented listing of the Spearman’s correlations…font changed, is this a footnote?? Should it be just another paragraph?

Discussion: 

How can they make the statement: “For those who remain relatively healthy??”- they were making comparisons of Global trends of covid so how do they know the “healthy” people were concerns and doing internet searches??

Discussion talks about Vitamin D  but does not report correlation (r)  in the listing of correlations? Some evidence that vitamin D may protect against covid .

Comments for author File: Comments.docx

Author Response

Reviewer 2 comments:

Point 1. Interesting article – wondered why they did not report in abstract/summaries more on vitamin D. 

Response 1: Thank you for your positive response to our work. We have put correlation results of vitamin D in the abstract (Page 1, Line 42).

Point 2. the introduction – first paragraph was repeated beginning on line 74

Response 2: Sorry for our careless mistake. We have deleted the repeated paragraphs in the introduction section (Page 2, Line 75-100)

Point 3. Was not familiar with the term “infodemiology”

Response 3: Thank you for your response. Eysenbach et al. define Infodemiology as the science of distribution and determinants of information in an electronic medium, specifically the Internet, or in a population, with the ultimate aim to inform public health and public policy. Infodemiology data can be collected and analyzed in near real time. Examples for infodemiology applications include: the analysis of queries from Internet search engines to predict disease outbreaks (e.g. influenza); monitoring peoples' status updates on microblogs such as Twitter for syndromic surveillance; detecting and quantifying disparities in health information availability; identifying and monitoring of public health relevant publications on the Internet (e.g. anti-vaccination sites, but also news articles or expert-curated outbreak reports); automated tools to measure information diffusion and knowledge translation, and tracking the effectiveness of health marketing campaigns [1].

Referencee :

  1. Eysenbach, G.J.J.o.m.I.r. Infodemiology and infoveillance: framework for an emerging set of public health informatics methods to analyze search, communication and publication behavior on the Internet. 2009, 11, e11.

Point 4. Figures – found somewhat confusing.  What are the listings for example for Figure 1 C, D, E, and F.  --  is one column the highest search and then the lower case listing the search terms??  Needs to be better described.

Response 4: Thank you for your suggestion. We have modified figure legend of Figure 1 as (A) Global trend curves for coronavirus-related search terms, cumulative confirmed coronavirus cases, (B) food insecurity RSV curves. (C-F) indicates food insecurity interest heatmap covering from 31 December 2019 to 25 April 2020: (C) Food bank, (D) Free food, (E) Free meal, (F) Food shortage. (C-F) the left line indicates the top five searched countries and the right line indicated the top five rising queries related search term. (Page 4, Line 134-138).

Point 5. Philippines with and s at the end

Response 5: Thank you, we have changed “Philippine” to “Philippines” in figure 1 (Page 4, Figure 1.E and 1.F).

Point 6. Consider putting the title of the Figures at the top (but may not be the journal style), confusing what you are looking at – have to search for the title.  Maybe use Figure 1A, Figure 1B instead of just A, B

Response 6: Thank you for your suggestion. We have changed all the figures as figure (1A, 1B, 1C,..(Page 4, Line 133), figure 2A, 2B, 2C… (Page 5, Line 157), figure 3A, 3B, 3C..(Page 6, Line 160) according to your suggestion.

Point 7. Section 3.5 has an indented listing of the Spearman’s correlations…font changed, is this a footnote?? Should it be just another paragraph?

Response 7: Thank you for your comment. We have put the text after the table 1 as below : (Page 7, Line 177) 


Search query

Spearman's correlation

 

COVID-19

daily confirmed cases

COVID-19

cumulative confirmed cases

"Coronavirus" Google Trend search volume

 
 

r

p value

r

p value

r

p value

 

Vitamins

0.752

<0.001

0.800

<0.001

0.913

<0.001

 

Vitamin A

0.780

<0.001

0.813

<0.001

0.741

<0.001

 

Vitamin B

0.707

<0.001

0.745

<0.001

0.644

<0.001

 

Vitamin C

0.802

<0.001

0.827

<0.001

0.957

<0.001

 

Vitamin D

0.549

<0.001

0.594

<0.001

0.705

<0.001

 

……..

 

 

 

 

 

 

 

“Spearman’s correlation analysis showed that the strongest variables in each keyword category were (1) food security (food shortage: r=0.749, food bank: r=0.660, and free food: r=0.555; all p<0.001), (2) dietary behaviors (delivery: r=0.780, restaurant: r=-0.731, take away, r=0.731, and food delivery: r=0.693; all p<0.001), (3) outdoor-related behaviors (resort: r=-0.922, hotel: r=-0.913, cinema: r=-0.844, park: r=-0.827, fitness: r=-0.817, gym: r=-0.811; plant: r=0.749, sunbathing: r=0.668, and online: r=0.670; all p<0.001), and (4) immune-related nutrients/herbs/foods (vitamin C: r=0.802, vitamin A: r=0.780, zinc: r=0.781, immune: r=0.739, vitamin E: r=0.707, garlic: r=0.667, omega-3 fatty acid: r=-0.633, Vitamin D: r=0.549, and turmeric: r=0.545; all p<0.001) (Table 1: COVID-19 confirmed cases). Similar correlation patterns were observed for COVID-19 cumulative cases or “coronavirus RSV” (Table 1)”

Point 8. Discussion:  How can they make the statement: “For those who remain relatively healthy??”- they were making comparisons of Global trends of Covid so how do they know the “healthy” people were concerns and doing internet searches??

Response 8: Thank you for your suggestion. We have removed “for those who remain relatively healthy” from the text (Page 8, Line 189).

Point 9. Discussion talks about Vitamin D but does not report correlation (r) in the listing of correlations? Some evidence that vitamin D may protect against covid-19.

Response 9: Thank you for your suggestion. We have reported vitamin D in Table 1 (page7, Line 177).


Search query

Spearman's correlation

 

COVID-19

daily confirmed cases

COVID-19

cumulative confirmed cases

"Coronavirus" Google Trend search volume

 
 

r

p value

r

p value

r

p value

 

Vitamins

0.752

<0.001

0.800

<0.001

0.913

<0.001

 

Vitamin A

0.780

<0.001

0.813

<0.001

0.741

<0.001

 

Vitamin B

0.707

<0.001

0.745

<0.001

0.644

<0.001

 

Vitamin C

0.802

<0.001

0.827

<0.001

0.957

<0.001

 

Vitamin D

0.549

<0.001

0.594

<0.001

0.705

<0.001

 

……..

 

 

 

 

 

 

 

 

We also mention it in discussion as: “Spearman's correlation analysis showed strong to moderate correlations between COVID-19 confirmed cases and vitamin C (r=0.802), vitamin A (r=0.780), zinc (r=0.781), vitamin E (r=0.707), and to a lesser extent, garlic (r=0.667), omega-3 fatty acid (r=-0.633), vitamin D (r=0.549), and turmeric (r=0.545)” (Page 8 ,Line 199-202).

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

Thank you for considering the changes I’d proposed. Still, I think that some aspects require more information or some modification (blue text) 

Point 4. L124 It is necessary to better justify the keywords used in each category. Specially in those related to Dietary behavior

Response 4: Thank you for your comment. Prior to identify the included keyword in each category, we have searched several keywords in Google Trends platform to understand what is the global search interests related to changes of dietary behavior and lifestyle during COVID-19 pandemic, which can be seen in the Supplementary Table 2 as following:

Reviewer: Table 2 is not mentioned in the manuscript, please  include it. 

Review and correct some errors in the words in Spanish in table 2: alcool for alcohol, Nitendo for Nintendo, baño de sol for tomar el sol, zin por zinc, cúcuma for curcuma

Likewise, and related to point 7, it would be interesting to comment a little more on the process or reason for selecting keywords and include them in Methods section

 Response 7: Thank you for your comment. To address question of changes of dietary behaviors during covid-19 pandemic, we initially search “dietary-related keywords” such as plant-based, weight loss diets, ketogenic diets; however, those keywords showed no significant trend, except in Vietnam. We found that Vietnamese had increased searched interests for “weight loss”.

Discussion

L240 and L241  Jezewska et al. and Santaliestra-Pasías references do not appear in the bibliography, please add them. 

It would be convenient to include and discuss other studies related to changes in dietary behaviours during covid such as https://doi.org/10.3390/nu12061730or  https://doi.org/10.3390/nu12061657, for example.

Bibliography

Point 9. Check the correct citation of reference 6.

Response 9: Thank you for your comment. We have checked the reference 6 which is correct. This paper was written by a group of international co-authors so the authorship appears to be enormous (Page 10, Line 313).

Reviewer: I was referring to the use of capital letters in the name of the first author, please change it.

Comments for author File: Comments.docx

Author Response

Point 1: Table 2 is not mentioned in the manuscript, please include it. Likewise, and related to point 7, it would be interesting to comment a little more on the process or reason for selecting keywords and include them in Methods section

Response 1: Thank you for your comment. We have mentioned supplementary table 2 in manuscript as following your suggestion. However, we changed sequences supplementary table 2 to supplementary table 1 as below:

“Prior to identify the included search terms in each category, we have searched several search terms in Google Trends platform to understand what is the global search interests related to changes of dietary behavior and lifestyle during COVID-19 pandemic which can be seen in the supplementary table 1. We selected those search terms that showed significant trend which were considered including “coronavirus”, “Covid-19”, “Covid 19”, “Covid”, and “SARS-CoV2” search terms”. (Page 3, Line 96-101).

 

Point 2. Point Review and correct some errors in the words in Spanish in table 2: alcool for alcohol, Nitendo for Nintendo, baño de sol for tomar el sol, zin por zinc, cúcuma for curcuma

Response 2 : Thank you for your comment. We have corrected the words list following your suggestion (supplementary table 1) (however we changed sequences supplementary table 2 to supplementary table 1). Supplementary material.

Supplementary Table 1. Keyword search term in different languages

Usa/uk/singapore

Philippines/

Nigeria

Spain

Italy

France

Saudi arabia

Japan

UAE

South korea

Indonesia

Malaysia

Jordan

Taiwan

Vietnam

Food bank

Banco de alimentos

Banca del cibo

Banque d'aliments

Food bank

フードバンク

Food bank

푸드뱅크

Bank makanan

Food bank

بنك الطعام


食物銀行

Nguồn cung thức phẩm

Free food

Alimento gratis

Cibo gratis

Nourriture gratuite

Free food

無料の食事

Free food

무료 식품/ 공짜 식품

Makanan gratis

Makanan percuma

Free food

食物

 

Free meal

Comida gratis

Pasto gratis

Plat gratuit

Free meal

無料の食事

Free meal

무료 음식/ 공짜 음식

Makanan gratis

Makanan percuma

وجبة مجانية

 

Food shortage

Escasez de alimentos

Carenza di cibo

Pénurie d'aliments

نقص الغذاء

食糧不足

Food shortage

식량 부족/ 음식 부족

Kelangkaan pangan

Kekurangan makanan

نقص الغذاء

糧食短缺

Thiếu hụt thúc ăn

Food safety

Seguridad alimentaria

Sicurezza di alimentari

Sécurité alimentaire

Food safety

Food safety

Food safety

식품 안전

Keamanan pangan

Keselamatan makanan

Food safety


食品安全

An toàn thưc phẩm

Food hygiene

Higiene de los alimentos

Igiene di alimentari

Hygiène alimentaire

الصحة الغذائية

Food hygiene

Food hygiene

식품 위생

Hygiene makanan

Hygiene makanan

الصحة الغذائية


食品衛生

Vệ sinh thực phẩm

Food

Alimento

Cibo

Nourriture

طعام

Food

طعام

식품/ 음식

Pangan/makanan

Makanan

طعام

食物

Thức ăn

Meal

Comida

Pasto

Plat/ repas

وجبة

Meal

وجبة

식사

Makanan

Makanan

وجبة

Bữa ăn

Breakfast

Desayuno

Colazione

Petit-dejeuner

وجبة افطار

Breakfast

وجبة افطار

아침

Sarapan

Sarapan

Breakfast

早餐

Bữa sáng

Alcohol

Alcohol

Alcool

Alcohol

الكحول

アルコール

Alcohol

Alkohol

Alkohol

الكحول

酒精

Cồn

Restaurant

Restaurante

Ristorante

Restaurant

مطعم

飲食店

Restaurant

식당

Restoran

Restoran

مطعم

餐廳

Nhà hàng

Delivery

Entrega

Consegna

Livraison

توصيل

配達

Delivery

배달

Pengiriman

Delivery

توصيل

交貨

Giao hàng

Food delivery

Entrega de comida

Domicilio

Livraison de nourriture

Food delivery

食品配達

Food delivery

배달 음식

Pengiriman makanan

Food delivery

Food delivery

外送

Giao hàng

Take away

Comida para llevar

Porta via

Plat  à emporter

Take away

取り除く

Take away

포장

Makanan bungkus

Bungkus/ bawa balik

Take away

外帶

Take away

Recipe

Receta

Ricetta

Recette

Recipe

レシピ

Recipe

레시피

Resep

Resepi

Recipe

食譜

Cách nấu

Cuisine

Cocina

Cucina

Cuisine

Cuisine

料理

Cuisine

요리

Masakan

Masakan

Cuisine

烹飪

Ẩm thực

Cake

Pastel

Torta

Gâteau

كيك

ケーキ

Cake

케이크

Cake

Kek

كيك

蛋糕

Bánh

Netflix

Netflix

Netflix

Netflix

Netflix

Netflix

Netflix

넷플릭스

Netflix

Netflix

Netflix

Netflix

Netflix

Nintendo

Nintendo

Nintendo

Nintendo

Nintendo

任天堂

Nintendo

닌텐도

Nintendo

Nintendo

Nintendo

任天堂

Nintendo

Play station

Play station

Play station

Play station

بلاي ستيشن

プレイステーション

بلاي ستيشن

플레이 스테이션

PS

PS

بلاي ستيشن

家用遊戲機

Play station

Cinema

Cine

Cinema

Cinéma

سينما

シネマ

سينما

영화관

Cinema

Pawagam

سينما

電影

Rạp chiếu phim

Hotel

Hotel

Hotel

Hotel

فندق

ホテル

Hotel

호텔

Hotel

Hotel

فندق

飯店

Khách sạn

Resort

Resort

Resort

Resort

منتجع

リゾート

Resort

리조트

Resort

Resort

Resort

度假村

Resort

Park

Parque

Parco

Parc

حديقة

パーク

Park

공원

Taman

Taman

Park

公園

Công viẻn

Plant

Planta

Pianta

Plante

نبات

工場

Plant

식물

Tanaman

Tanaman

نبات

植物

Thực vật

Flower

Flor

Fiori

Fleur

زهرة

Flower

Bunga

Bunga

زهرة

Hoa

Gym

Gym

Palestra

Gym

Gym

ジム

Gym

헬스장

Gym

Gym

Gym

健身房

Gym

Exercise

Ejercicio

Esercitazione

Exercise

ممارسة

運動

Exercise

운동

Olahraga

Bersenam

Exercise

運動

Thể dục

Outdoor

Afuera

Fuori

Dehors

Outdoor

アウトドア

Outdoor

야외활동

Tempat terbuka

Luar taska

Outdoor

戶外

Ngoài trời

Workout

Workout

Workout

Workout

تجريب

いい結果になる

Workout

운동

Workout

Workout

Workout

重量訓練

Thể dục

Yoga

Yoga

Yoga

Yoga

Yoga

ヨガ

Yoga

요가

Yoga

Yoga

Yoga

瑜珈

Yoga

Sunbathing

Tomar el sol

Prendere il sole

Bain de soleil

تسفع

日光浴

Sunbathing

일광욕

Berjemur

Berjemur

Sunbathing

日光浴

Tắm nắng

Cycling

Ciclismo

Ciclismo

Cyclisme

Cycling

サイクリング

Cycling

자전거 타기/ 사이클링

Bersepeda

Berbasikal

Cycling

騎腳踏車

Đạp xe đạp

Vitamin

Vitamina

Vitamina

Vitamine

فيتامين

ビタミン

Vitamin

비타민

Vitamin

Vitamin

فيتامين

維生素

Vitamin

Vitamin C

Vitamina C

Vitamina C

Vitamine C

فيتامين سي

ビタミンC

Vitamin C

비타민 C

Vitamin C

Vitamin C

فيتامين سي

維生素 C

Vitamin C

Vitamin D

Vitamina D

Vitamina D

Vitamine D

فيتامين د

ビタミンD

Vitamin D

비타민 D

Vitamin D

Vitamin D

فيتامين د

維生素 D

Vitamin D

Vitamin A

Vitamina A

Vitamina A

Vitamine A

فيتامين أ

ビタミンA

Vitamin A

비타민 A

Vitamin A

Vitamin A

فيتامين أ

維生素 A

Vitamin A

Vitamin E

Vitamina E

Vitamina E

Vitamine E

فيتامين هـ

ビタミンE

Vitamin E

비타민 E

Vitamin E

Vitamin E

Vitamin E

維生素 E

 

Vitamin E

Vitamin B

Vitamina B

Vitamina B

Vitamine B

فيتامين ب

ビタミンB

Vitamin B

비타민 B

Vitamin B

Vitamin B

فيتامين ب

維生素 B

Vitamin B

Zinc

Zinc

Zinco

Zinc

زنك

亜鉛

Zinc

아연

Zink

Zink

Zinc

 

Kẽm

Iron

Hierro

Ferro

Fer

حديد

Iron

Zat besi

Zat besi

حديد

 

Sắt

Selenium

Selenio

Selenio

Sélénium

السيلينيوم

セレン

Selenium

셀레늄

Selenium

Selenium

Selenium

Se

Turmeric

Curcuma

Curcuma

Curcuma

الكركم

ターメリック

Turmeric

강황

Temulawak

Kunyit

الكركم

薑黃

Nghệ

Garlic

Ajo

Aglio

Ail

ثوم

ニンニク

Garlic

마늘

Bawang putih

Bawang putih

ثوم

蒜頭

Tỏi

Ginger

Jenjibre

Zenzero

Gingembre

زنجبيل

ショウガ

Ginger

생강

Jahe

Halia

زنجبيل

Gừng

Onion

Cebolla

Cipolla

Oignon

بصل

玉ねぎ

Onion

양파

Bawang bombay

Bawang merah

بصل

洋蔥

Hành

Herbal

Hierba

Erbacea

Plantes medicinales

Herb

ハーブ

Herb

약초/ 허브

Herbal

Herba

أعشاب

草本植物

Thảo mộc

Omega 3

Omega 3

Omega 3

Oméga 3

أوميغا 3

オメガ3

Omega 3

오메가 3

Omega 3

Omega 3

Omega 3

Omega-3脂肪酸

Omega 3

Cookies

Galletas

Biscotto

Biscuits

بسكويت

クッキー

Cookies

과자

Cookies

Biskut

بسكويت

餅乾

Bánh cookie

Bread

Pan

Pane

Pain

خبز

パン

Bread

Roti

Roti

Bread

麵包

Bánh mì

Pizza

Pizza

Pizza

Pizza

بيتزا

ピザ

Pizza

피자

Pizza

Pizza

بيتزا

披薩

Pizza

Chicken

Pollo

Pollo

Poulet

دجاج

チキン

Chicken

치킨

Ayam

Ayam

دجاج

雞肉

Thịt gà

Herbal remedy

Fitoterapia

Erbe

Phytotérapie

علاج عشبي

薬草剤

Herbal remedy

한방 치료/ 한방약

Jamu

Ubat herba

علاج عشبي

草藥

Dược thảo

Vegetables

Legumbres

Verdure

Légumes

خضروات

野菜

Vegetables

채소

Sayuran

Sayur-sayuran

خضروات

蔬菜

Rau xanh

Immunity

Inmunologia

Immunita'

Immunologie

مناعة

免疫

Immunity

면역

Daya tahan tubuh

Immuniti

Vegetables

免疫

Miễn dịch

Beer

Cerveza

Birra

Bière

بيرة

ビール

Beer

맥주

Bir

Bir

Beer

啤酒

Bia

Take out

Eliminar

Take out

Sortir

Take out

取り出す

Take out

포장

Bungkus

Bungkus/ bawa balik

تخلص من

外帶

Take away

Curcumin

Cúrcumin

Curcumina

Curcumine

الكركم

クルクミン

الكركم

커큐민

Kunyit

Kunyit

الكركم

薑黃素

Curcumin

Weigh loss

Perdida de peso

Perdita di peso

Perte du poids

Weigh loss

減量

فقدان الوزن

체중 감량/ 체중 감소

Penurunan berat badan

Penurunan/ kejatuhan berat badan

فقدان الوزن

減肥

Giảm cân

Plant-based diet

 

Dieta a base de plantas

Dieta a base vegetale

 

Régime à base de plantes

Plant-based diet

 

النظام الغذائي النباتي

 

Diet vegan

 

Plant-based diet

النظام الغذائي النباتي

 

Chế độ ăn thuần thực vật

Ketogenic diet

 

Dieta chetogenica

Régime cétogène

Ketogenic diet

 

 

 

Diet keto

Ketogenic diet

 

 

Giảm cân keto

Coffe

Café

Cafe'

Café

قهوة

コーヒー

Coffee

커피

Kopi

Kopi

قهوة

咖啡

 

Fitness

Fitness

Fitness

Fitness

Fitness

フィットネス

Fitness

피트니스

Fitness

Fitness

Fitness

Weigh loss

 

Aerobics

Aeróbico

'Aerobica

Aérobique

التمارين الرياضية

エアロビクス

Aerobics

에어로빅

Aerobik

Aerobik

التمارين الرياضية

Coffe

Aerobic

Meditation

Meditacion

Meditazione

Méditation

تأمل

瞑想

Meditation

명상

Meditasi

Meditasi

تأمل

 

Thiền

Relaxation

Relajaxion

Rilassamento

Relaxation

استرخاء

リラクゼーション

Relaxation

휴식

Relaksasi

Relak

استرخاء

 

Thư giãn

 

 

Discussion

Point 3. L240 and L241 Jezewska et al. and Santaliestra-Pasías references do not appear in the bibliography, please add them. 

Response 3: Thank you for your comment. We have added two references for line 240 and line 241 sentences as below:

“For example, Jezewska-Zychowicz et al. showed that “meat and meat products” were positively associated with television viewing [27]. Santaliestra-Pasías and colleagues also reported that television viewing or using the internet for recreational reasons was positively associated with “snacking behavior” but negatively correlated with “plant-based” and “breakfast” dietary patterns in European adolescents [28]”. (Page 10-11, Line 252-256)

  1. Jezewska-Zychowicz, M.; Gębski, J.; Plichta, M.; Guzek, D.; Kosicka-Gębska, M. Diet-Related Factors, Physical Activity, and Weight Status in Polish Adults. Nutrients 2019, 11, 2532, doi:10.3390/nu11102532.
  2. Santaliestra-Pasías, A.M.; Mouratidou, T.; Verbestel, V.; Huybrechts, I.; Gottrand, F.; Le Donne, C.; Cuenca-García, M.; Díaz, L.E.; Kafatos, A.; Manios, Y., et al. Food Consumption and Screen-Based Sedentary Behaviors in European Adolescents: The HELENA Study. Archives of Pediatrics & Adolescent Medicine 2012, 166, 1010-1020, doi:10.1001/archpediatrics.2012.646 %J Archives of Pediatrics & Adolescent Medicine.

 

Point 4. It would be convenient to include and discuss other studies related to changes in dietary behaviours during covid such as https://doi.org/10.3390/nu12061730 or  https://doi.org/10.3390/nu12061657, for example.

Response 4: Thank you for your comment. We have added the two references in discussion as below :

“ In addition, home confinement was also associated with unhealthy dietary patterns as participants reported increased frequencies of eating unhealthy food, eating out of control, snacking between meals, and having an increased number of meals per day [6,25]. In contrast, a study of dietary behaviors of the Spanish adult population resulted outlined healthier dietary behaviors (e.g. decreased the intake of fried foods, snacks, fast foods, red meat, pastries or sweet beverages, but increased, olive oil, vegetables, fruits or legumes) during the confinement during COVID-19 outbreak when compared to previous habits [26]”. (Page 10, Line 243-248).

  1. Sidor, A.; Rzymski, P. Dietary Choices and Habits during COVID-19 Lockdown: Experience from Poland. J Nutrients 2020, 12, 1657.
  2. Rodríguez-Pérez, C.; Molina-Montes, E.; Verardo, V.; Artacho, R.; García-Villanova, B.; Guerra-Hernández, E.J.; Ruíz-López, M.D. Changes in Dietary Behaviours during the COVID-19 Outbreak Confinement in the Spanish COVIDiet Study. J Nutrients 2020, 12, 1730.

Response:

Bibliography

Point 5: I was referring to the use of capital letters in the name of the first author, please change it.

Response 5: Thank you for your comment. Sorry for our misunderstanding. We changed the bibliography as your suggestion. (Page1, Line 327-330)

6.         Ammar, A.; Brach, M.; Trabelsi, K.; Chtourou, H.; Boukhris, O.; Masmoudi, L.; Bouaziz, B.; Bentlage, E.; How, D.; Ahmed, M., et al. Effects of COVID-19 home confinement on physical activity and eating behaviour Preliminary results of the ECLB-COVID19 international online-survey. medRxiv and bioRxiv 2020, https://doi.org/10.1101/2020.05.04.20072447, doi:https://doi.org/10.1101/2020.05.04.20072447.

Author Response File: Author Response.docx

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