22:06

3. Randomised controlled trials

1:09:25

Cohort studies and case control studies

1:12:06

Causality, association, correlation, random error, bias, and confounding

57:57

Stanford Webinar - Design Thinking: What is it and why should I care?

8:34

Randomized Controlled Trials

41:48

What is policy, healthy public policy and health in all policies

1:27:56

IPPCR 2015: Issues in Randomization

50:35

Measures of disease occurrence and measures of association