title: [Design of a population-based study of cardiovascular risk in Castile and Leon [Spain] through primary care teams].
abstract: We describe the design and the response indicators in a cross sectional study to estimate several factors associated with cardiovascular risk in the population of Castile and Leon. A sample of 4,950 individuals aged 15 years and above was obtained in two stages: in the first stage, 198 primary care physicians were selected and in the second stage a sample of 25 persons from each primary care physician's list was obtained. The response rate was 98% among primary care physicians and 80% among the population. Statistically significant differences were found in age distribution between the frame sample and the definitive sample. After applying design adjustments, only the group aged 35-64 years was significantly overdimensioned. Access to the general population in primary health care is a feasible and effective procedure. A high response rate contributes to the validity of the information.
authors.affiliation: Observatorio de Salud Pública, Dirección General de Salud Pública, Consejería de Sanidad, Junta de Castilla y León, Valladolid, España. vegaloto@jcyl.es
authors.forename: A Tomás
authors.initials: AT
authors.lastname: Vega Alonso
authors.forename: José Eugenio
authors.initials: JE
authors.lastname: Lozano Alonso
authors.forename: Rufino
authors.initials: R
authors.lastname: Alamo Sanz
authors.forename: Siro
authors.initials: S
authors.lastname: Lleras Muñoz
authors.forename: Alfonso
authors.initials: A
authors.lastname: Escribano Hernández
authors.forename: Purificación
authors.initials: P
authors.lastname: De la Iglesia Rodríguez
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D015340:Epidemiologic Research Design; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011320:Primary Health Care / Q000458:organization & administration*; D012307:Risk Factors; D012494:Sampling Studies; D013030:Spain / Q000453:epidemiology