From: Self-collection of samples for group B streptococcus testing during pregnancy: a systematic review and meta-analysis
Randomised studies
(4 studies, 1226 participants)
Non-randomised studies
(7 studies, 2043 participants)
rho
 − 1.00
 − 0.51
I2(%)
Generalised
0.03
51.93
Se
68.85
37.38
Sp
12.08
72.50