Time of Analysis

N studies

OR (95% CI)

Q statistic

P value

I² statistic

AP

7

0.41 (0.17, 1.01)

39.04

<0.0001

82%

AC

2

0.67 (0.04, 10.49)

5.65

0.017

82%

Baseline

5

0.87 (0.40, 1.92)

10.63

0.031

63%

Follow-up

4

0.18 (0.04, 0.83)

12.81

0.012

69%