Sample Size Determination for Quantitative Research
The Aga Khan University Department of Continuing Professional Education (AKU-DCPE) is accredited by the Pakistan Medical & Dental Council (PMDC) and the American Association of Continuing Medical Education (AACME) to provide continuing medical education. The AACME designates this live educational activity for a maximum of 11.5 AACME Category 1 credit(s).
Researchers frequently ask how many subjects are required to conduct an epidemiological or clinical study. Sample size estimation for a research study is an important step in the design of the project. An adequate sample size helps ensure that the study will yield reliable information. There are several approaches to estimate the sample size. It depends on the type of the epidemiological study (Descriptive, observational and randomized controlled studies), method of analysis and outcome of interest.
