To determine prevalence estimates it was assumed that a chronic disease, once recorded, remains prevalent during all follow-up years in the registration (recovery is not possible).
This study aims to determine prevalence and incidence of epilepsy in the US pediatric population.
To determine prevalence, primary causes, and risk indicators of visual impairment in cataract-operated eyes.
To define the clinical manifestations, determine prevalence, and heighten awareness about the arthropathy of Down syndrome.
To determine prevalence and cross-sectional trends over time for cardiovascular risk factors in Canadian adolescents.
To determine prevalence and correlates of US medical students' self-identification as vegetarians.
To determine prevalence of alcohol abuse and dependency, depression, and cognitive impairment in presurgical head and neck cancer patients.
The aim of study was to determine prevalence and identify demographic correlates of active and non-active gaming among adolescents.
To determine prevalence and causes of visual field loss (VFL) as determined by frequency doubling perimetry in elderly Chinese individuals.
This study aimed to determine prevalence and correlates of suicidal attempts in an adult primary care population in Sousse (Tunisia).
We sought to determine prevalence and likelihood of venous thromboembolism (VTE) among women with and without polycystic ovary syndrome (PCOS).
