Power and Sample Size

Description: 35-minute webinar on sample size calculations for grant applications.

Link: Webinar: Sample Size Calculations

Who is this resource for: clinical investigators

Who created this resource: This resource is presented by Susan Puumala (PhD) and Chad Birger (MS) of the Collaborative Research Center for American Indian Health (CRCAIH) Methodology Core

What does this resource offer: This resource provides a thirty-minute webinar that uses an explanation of the statistical hypothesis testing framework, along with two research examples to show how sample sizes can be calculated. Both of the examples have two comparison groups (one with a continuous outcome, the other with a categorical outcome). For both examples, the lecturers demonstrate how the sample size can be calculated using (free) G*Power software.