Study

Findings

Calculated effect size

p-value

Comment

Wildier, et al. [10]

I: 19/36

C: 16/36

Risk ratio: 1.19

(95 % CI 0.74-1.92)

NR

Marginally significant

Zhang, et al. [9]

I: 21/35

C: 16/31

Risk ratio: 1.38

(95 % CI 0.93-2.16)

0.09

Statistically insignificant,

Marginally significant