Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Suitable research design depends on the purpose of the study.
| Purpose | Study Design |
|---|---|
| To determine frequency and burden of a disease | * Cross-sectional survey (Prevalence) * Cohort study (Incidence) |
| To identify the risk factors | * Cohort study * Case-Control study |
| To determine prognosis of a disease | * Cohort study |
| To determine efficacy/effectiveness of a new treatment | * Clinical trials * Community intervention |
| To evaluate community programs | * Evaluation |
