Layan Sukik

• Master of Public Health
• Research Specialist - Epidemiology/Biostatistics at Weill Cornell Medicine-Qatar

Objectives To investigate the epidemiology of herpes simplex virus type 1 (HSV-1) in Latin America and the Caribbean. Methods Systematic review and meta-analytics guided by the Cochrane Collaboration Handbook and reported following the PRISMA guidelines. Results Thirty-three relevant reports were identified including 35 overall (and 95 stratified...

The association between egg consumption and cognitive function is inclusive. We aimed to assess the association between egg consumption and cognitive function in Chinese adults and tested the interaction between egg consumption and iron intake. The data used was from a nationwide sample (n = 4852, age ≥55 years) from the China Health and Nutrition...

Background Previous studies suggest a positive effect of tea intake on cognition. Additional micronutrients that may moderate this association was not previously examined. Objective To examine the association between tea consumption and cognition and explore the interaction between tea consumption and iron intake. Methods Data from the China Heal...

Objective: To investigate the association between time spent on screen-based sedentary behavior (SBSB) and depression symptom severity (DSS) among adults with type 2 diabetes. Methods: A cross-sectional study employing secondary data collected by Qatar Biobank (QBB) on 2386 adults with type 2 diabetes aged ≥ 18 years. Self-reported data on DSS meas...

The association between serum 25-hydroxyvitamin D [25(OH)D] concentration and breast cancer risk in postmenopausal women is not well understood. The aim of this study was to investigate the association between serum 25(OH)D concentration and breast cancer in postmenopausal women in the United States using nationally representative sample surveys. W...

Background Regular physical activity (PA) has beneficial health effects in controlling and managing diabetes. Identifying key factors associated with poor adherence to PA recommendations among patients with type 2 diabetes (T2D) has significant implications for future targeted interventions aimed at improving adherence and health outcomes in this p...

Background SARS-CoV-2 infection is associated with protection against reinfection. This study analysed this protection across different reinfection symptoms and severities, comparing the preomicron and omicron eras. Methods A nationwide, matched, test-negative, case–control study was conducted in Qatar from 5 February 2020 to 12 March 2024. The pr...

Background Accurately assessing SARS-CoV-2 infection severity is essential for understanding the health impact of the infection and evaluating the effectiveness of interventions. This study investigated whether SARS-CoV-2-associated hospitalizations can reliably measure true COVID-19 severity. Methods The diagnostic accuracy of SARS-CoV-2-associat...

This study aims to investigate level of adherence to physical activity recommendation and appoint factors associated with nonadherence. We found that most individuals with T2D among QBB population do not meet the PA recommendations. Increased age, female gender, low education and income levels, increased time spent on sedentary behavior, inadequate...

Background: Post-menopausal women are at high risk for breast cancer. The association between serum 25-hydroxyvitamin D [25(OH)D] concentration and breast cancer in post-menopausal women is not well understood. Objectives: The aim of this study was to investigate the association between serum 25(OH)D and breast cancer using nationally representativ...

Background We aim to investigate the epidemiology of herpes simplex virus type 1 (HSV-1) in Latin America and the Caribbean. Methods Systematic review and meta-analytics guided by the Cochrane Collaboration Handbook and reported following the PRISMA guidelines. Results Thirty-one relevant reports were identified including 35 overall (and 95 strat...

Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) checklist. (DOCX)

Data sources and search criteria for systematically reviewing HSV-1 epidemiology in Latin America and the Caribbean. (DOCX)

Summary of the precision assessment and risk of bias (ROB) assessment for the studies reporting HSV-1 seroprevalence in Latin America and the Caribbean. (DOCX)

List of variables extracted from the relevant reports meeting the inclusion criteria. (DOCX)

Forest plots presenting the outcomes of the pooled mean HSV-1 seroprevalence among children and adult populations in Latin America and the Caribbean. (DOCX)

Multivariable meta-regression models for HSV-1 seroprevalence in Latin America and the Caribbean including the categorical stratification by year of publication. (DOCX)

List of the 46 countries included in our definition for the Latin America and the Caribbean region. (DOCX)

Forest plots presenting the outcomes of the pooled mean proportions of HSV-1 virus isolation in clinically-diagnosed genital ulcer disease and in clinically-diagnosed genital herpes in Latin America and the Caribbean. (DOCX)