This paper considers the problem of testing cross-sectional correlation in large panel data models with serially-correlated errors. It finds that existing tests for cross-sectional correlation encounter size distortions with serial correlation in the...
6 July 2020
Individuals with mild cognitive impairment (MCI) are at high risk for dementia development. Sleep disturbance is often overlooked in MCI, although it is an important risk factor of cognitive decline. In the absence of a cure for dementia, managing th...
Educators who keep teaching under wartime missile threat occupy a demanding dual role, sustaining instruction and students’ emotional needs while personally exposed. This descriptive cross-sectional study examined dispositional and life-stage c...
We present the effective optical potential describing the interaction between an electron and a neon atom in a dense plasma. This potential accounts not only for the screening effect but also for the quantum non-locality and electronic correlation ef...
The Common Correlated Effect (CCE) estimator is widely used in panel data models to address cross-sectional dependence, particularly in nonstationary panels. However, existing estimators have limitations, especially in small-sample settings. This stu...
Due to the non-normality of stock returns, nonparametric rank tests are gaining accceptance relative to parametric tests in financial economics event studies. In rank tests, financial assets’ multiple day cumulative abnormal returns (CARs) are...
Higher education institutions have undergone essential transformations in recent decades, driven by legislative reforms and changes in social and economic demands. This study examines the factors that influence the continuous improvement of education...
Reproductive lifespan is determined by the reserve of ovarian follicles; their quality and quality determine the fertility potential at a given point in time for a particular individual. Inter-individual variations related to morphometry, laterality,...
23 March 2023
This study aimed to investigate whether oral health behaviors were related to the dietary intake of vitamins. In this cross-sectional study, we included respondents of the 2016 national health and nutrition examination survey, and dental diseases fro...
Widespread interference of human activities has resulted in major environmental problems, including pollution, global warming, land degradation, and biodiversity loss, directly affecting the sustainability and quality of the environment and ecosystem...
This paper develops a Stein-like combined estimator for large heterogeneous panel data models under common structural breaks. The model allows for cross-sectional dependence through a general multifactor error structure. By utilizing the common corre...
Background: This cross-sectional study aimed to assess the correlation between subjective oral health status and mental health in a group of university students in Serbia. Methods: The study included 948 students, aged between 18 and 27, from the Fac...
Evidence on the fiscal consequences of population ageing rests largely on projections and regional panels. We examine how ageing relates to growth and the primary fiscal balance across sixty-nine economies from 1990 to 2024. Because cross-sectional d...
11 February 2019
When using repeated measures linear regression models to make causal inference in laboratory, clinical and environmental research, it is typically assumed that the within-subject association of differences (or changes) in predictor variable values ac...
This study aims to identify potential correlations of the severity of symptoms of children with autism spectrum disorder (ASD) with serum nutritional levels, body composition indicators, diet partiality, and sleep disturbances. The cohort of this cro...
Background/Objectives: Idiopathic immune-mediated uveitis (IIMU) is an intraocular inflammatory condition affecting the uveal tract and adjacent ocular structures, potentially leading to systemic involvement. Audiovestibular symptoms, such as sensori...
Objectives: We sought to investigate the visual function, retinal features, and genotype–phenotype correlations of an Australian cohort of RPGR carriers. Methods: In this cross-sectional study, we evaluated RPGR carriers seen in Melbourne and P...
Nesfatin-1 and ghrelin O-acyltransferase (GOAT) have established roles in metabolic regulation and neuronal excitability, yet their relationship in epilepsy remains conflicted. This cross-sectional study compared 22 adolescent epilepsy patients (13.1...
(1) Background: The assessment and application of registered nurses’ professional skills are essential to providing quality and safe care. Self-efficacy can positively affect the professional competence of registered nurses. This study analysed...
Infrapatellar fat pad (IPFP) inflammation is a common pathological manifestation in knee osteoarthritis (OA). However, the significance of IPFP signal intensity alteration for clinical diagnosis and treatment of knee OA needs further research. We ass...
26 March 2022
Comorbidities cause psychological distress to patients on hemodialysis and cause their physical function to deteriorate. This study aims to examine whether physical patterns are associated with anxiety, depression and fatigue among patients with and...
31 July 2022
The correlation between diabetes-related biomarkers and quality of life (QOL) remains unclear. In this cross-sectional study, we investigated the correlation between diabetes-related biomarkers and QOL in a general Japanese population who underwent h...
12 April 2021
Background: The relationship between growth of the foot and other anthropometric parameters during body development until puberty has been scarcely studied. Some studies propose that growth of the foot in length may be an early index of puberty. The...
The aim of this study was to confirm the correlation between social support and the quality of life of seniors who live without cognitive disorders, but are living in an institutional environment. The measurement of variables was based on a cross-sec...
Background: This study investigated the association between atherosclerosis and systemic inflammation markers, specifically the C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymp...
31 May 2023
For the timely treatment and management of depression, a high level of depression literacy (DL) is needed. This study aimed to examine the level of DL and factors associated with DL among middle-aged Korean adults and to verify the relationship betwe...
Ability, knowledge, aptitude, and skill are the terms identified in the literature as the attributes of the concept of clinical competence. This implies that in order to act competently in their own context, the nurse must be able to make decisions w...
Background/Objectives: The aims of this study were to establish the relationship between hand grip strength (HGS) and sleep disturbances, as well as to correlate HGS with the perception of general health status. Methods: A cross-sectional study was c...
23 February 2023
Existing studies often focus on the impact of the neighbourhood environment on the subjective wellbeing (SWB) of the residents. Very few studies explore the impacts of the neighbourhood environment on migrant older adults. This study was conducted to...
Recently, senescent T cells in the peripheral blood have been detected using senescence-associated β-galactosidase (SA-βGal) activity and have been used as an endpoint in clinical trials. However, the epidemiological association between the...
Subacromial Impingement Syndrome (SAIS) is a common shoulder condition characterized by pain and functional impairment. Proprioception, the sense of joint position and movement, is crucial in maintaining joint stability and coordinating movements. Th...
Background/Objectives: Genetic variation in bitter taste receptors, particularly TAS2R38, influences sensitivity to bitter compounds such as 6-n-propylthiouracil (PROP). However, its influence on food preferences and dietary habits remains unclear. T...
Bamboo cracking is primarily attributed to the influence of moisture on its structure. Natural-speckle digital image correlation (DIC) was employed to characterize tangential shrinkage in cross-sections, using parenchyma cells as intrinsic speckle pa...
Background: Few studies have correlated maternal and neonatal Vit D (25(OH)D) levels at birth in Greece. We investigated this potential association, taking into account the administration or not of low doses (400–800 IU) of prenatal Vit D suppl...
Opium smoking has been a common practice in Iran for many years, with people often smoking for long hours. During the COVID-19 pandemic, there was an increase in opium smoking due to false beliefs about its protective effects against COVID-19 infecti...
Muscle weakness is a key contributor to functional limitation in individuals with hip (HOA) or knee osteoarthritis (KOA). Identifying accessible and objective tools to estimate muscle strength could improve clinical assessment and rehabilitation moni...
19 March 2022
This study aimed to investigate the correlations among Stress and Anxiety to Viral Epidemics (SAVE), job stress (JS), and burnout among Korean dental hygienists during the COVID-19 pandemic and to identify the moderating effect of JS. As a cross-sect...
(1) Background: The SCORE2-Diabetes model has been developed as an effective tool to estimate the 10-year cardiovascular risk in patients with diabetes. Coronary computed tomography angiography (CCTA) and its derived Coronary Artery Calcium Score (CA...
Background/Objectives: Chronic pain is associated with autonomic nervous system (ANS) dysfunction, which can be indexed by heart rate variability (HRV). This cross-sectional study examined associations between ANS dysregulation and phantom limb pain...
17 February 2023
Venous Ulcers (VU) are a serious health problem that affect the Quality of Life (QoL). They are evaluated by many different scales in the literature. We aimed to analyze the correlation between the Medical Outcomes Short-Form Health QoL (SF-36) and C...
Background: Padel is a rapidly growing sport, yet limited evidence is available regarding movement quality and injury history among competitive players. The Functional Movement Screen (FMS) may help describe movement patterns associated with previous...
18 August 2022
Although exercise is associated with improved health in many medical conditions, little is known about the possible influences of physical activity (PA) habits pre- and post- a diagnosis of systemic sclerosis (SSc) on disease activity and progression...
This study aimed to assess the correlation between different aspects of routinary physical activity with chronic neck pain severity indicators and salivary cortisol. This cross-sectional observational study included ninety-four office workers with no...
11 January 2023
Background: This study aimed to evaluate the correlation between the presence of hairy tongue and H. pylori infection in patients referring to their blood test based on the serum levels of anti-H pylori IgG antibodies. Methods: This cross-sectional s...
In competitive sport, an athlete’s success is often linked to their physical strength, skill, and overall athletic ability. However, physical talent alone does not fully account for sporting success, as psychological and other personal factors...
Double photoionization (DPI) allows for a sensitive and direct probe of electron correlation, which governs the structure of all matter. For atoms, much of the work in theory and experiment that informs our fullest understanding of this process has b...
Background/Objectives: This analysis aims to examine the correlations involving glucose levels, serum lipid parameters, and lipid ratios in adults diagnosed with type 2 diabetes mellitus (T2DM) in Southern Thailand. Methods: A cross-sectional investi...
Introduction: the management of musculoskeletal pain through the application of dry needling (DN) is effective. The application of this technique can carry very infrequent major risks on muscles, such as on the iliocostalis lumborum due to its proxim...
Background: Surveys in Tanzania show that pregnant women have a significant burden of oral disease, although there is still little literature on the variation of their intraoral electrolytes. The present study investigated changes in salivary calcium...
Background: Nurses’ teaching skills in the clinical setting are crucial to ensuring that students receive high-quality training. Despite the growing importance of competency frameworks, there is little research on the relationship between nurse...
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