# Activity

6 studies of different sizes comparing treatments A and B are shown below. Drag them into the pool

**in numbered order**to see what happens to the pooled estimate.** Pool of studies - treatment A V B**

Effect size

= 5% beneficial

Effect size

= 20% harmful

Effect size

= 22% beneficial

Effect size

= 7% beneficial

Effect size

= 14% beneficial

Effect size

= 2% harmful