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Nutrients 2018, 10(10), 1453; https://doi.org/10.3390/nu10101453

Development and Validation of a New Tool to Assess Burden of Dietary Sodium Restriction in Patients with Chronic Heart Failure: The BIRD Questionnaire

1
Public Health Department, CEpiA (EA4393), 94000 Créteil, France
2
Heart Failure Unit, Department of Cardiology, INSERM U955, ARI, DHU ATVB, AP-HP Henri Mondor Hospital, University Paris Est Créteil (UPEC), 94000 Créteil, France
3
Dietetic Unit, AP-HP Henri Mondor Hospital, University Paris Est Créteil (UPEC), 94000 Créteil, France
4
EMMA, European Market Maintenance Assessment, 94080 Vincennes, France
*
Author to whom correspondence should be addressed.
Received: 31 August 2018 / Revised: 30 September 2018 / Accepted: 1 October 2018 / Published: 7 October 2018
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Abstract

(1) Background: Burden scales are useful in estimating the impact of interventions from patients’ perspectives. This is overlooked in sodium diet/heart failure (HF). The aim of this study is to develop and validate a specific tool to assess the burden associated with low-sodium diets in HF: the Burden scale In Restricted Diets (BIRD). (2) Methods: Based on the literature and reports from patients, 14 candidate items were identified for the following dietary-related domains: organization, pleasure, leisure, social life, vitality, and self-rated health. The validation study was conducted prospectively. The questionnaire was refined via item reduction according to inter-item correlations and exploratory factor analysis. Internal consistency was determined using Cronbach’s alpha (Cα) and convergent validity by assessing correlations between BIRD and the health-related quality of life (HRQoL) Minnesota Living with HF questionnaire (MLHF). (3) Results: Of the 152 invited patients, 96 (63%) returned the questionnaire. The median score was 6.5 (IQR 2.0–14.0). The results showed good acceptability (non-response rates/item from 2.0% to 12.1%), an excellent internal consistency (Cα = 0.903) and a good convergent validity (rhos = 0.37 (physical), 0.4 (mental), and 0.45 (global); all p < 0.05). (4) Conclusions: BIRD demonstrates good psychometric properties and is useful to quantify the burden associated with sodium restriction. It may help optimize dietary interventions and improve the overall management of patients with HF. View Full-Text
Keywords: heart failure; questionnaire; sodium restriction; diet; burden heart failure; questionnaire; sodium restriction; diet; burden
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Audureau, E.; Guellich, A.; Guéry, E.; Canouï-Poitrine, F.; Benedyga, V.; Duchossoir, H.; Taieb, C.; Damy, T. Development and Validation of a New Tool to Assess Burden of Dietary Sodium Restriction in Patients with Chronic Heart Failure: The BIRD Questionnaire. Nutrients 2018, 10, 1453.

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