The study of the distribution and determinants of disease or events in specific populations, and the application of this study to disease control. Epidemiological studies are often classified either as "descriptive", where diseases are characterized according to where, when and to whom they occur, or "analytic," which involving testing hypotheses about exposure-disease relationships and quantifying the levels of risk such exposures may entail.
An assessment of error in parental occupation from the birth certificate
This study used data obtained through interview with the mother to determine whether parental occupations from the California birth certificate were representative of maternal occupations during the first...
Approaches to disease cluster investigations in a state health department
Classical tests for clustering rarely have a major role in the investigation of disease clusters at the neighborhood level performed by a health department....
Estimating epidemiologic parameters by regression
Wilcosky and Chambless (J Chron Dis 1985; 38:849) discussed using regression techniques to produce both stratum-specific and "directly" adjusted rates and ratio measures....
The Epidemiology of Mental Retardation of Unknown Cause
OBJECTIVE: To describe selected infant and maternal characteristics for children with mild and severe mental retardation (MR) of unknown cause....
Autism in relation to Hazardous and Criteria Air Pollutants
-- In this project, existing databases are linked to examine possible environmental factors related to autism....
Cohort Study of Girls Nutrition, Environment and Tanner stage
-- This project is a renewal of the prior 7-year longitudinal study of factors that affect age at pubertal development in girls and is part of the Breast Cancer & the Environment Research Program (BCERP),....
Perinatal Hormones and Autism
-- To explore a hormonal etiology for Autism, we linked several existing CDPH databases....