Self-collection of samples for group B streptococcus testing during pregnancy: a systematic review and meta-analysis

Table 4 Between-study heterogeneity statistics for randomised (left) and non-randomised (right) GBS studies that compare self-collection to provider-collection

	Randomised studies (4 studies, 1226 participants)	Non-randomised studies (7 studies, 2043 participants)
rho	− 1.00	− 0.51
rho	I²(%)	I²(%)
Generalised	0.03	51.93
Se	68.85	37.38
Sp	12.08	72.50

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