From: Rapid intrapartum test for maternal group B streptococcal colonisation and its effect on antibiotic use in labouring women with risk factors for early-onset neonatal infection (GBS2): cluster randomised trial with nested test accuracy study
Selective enrichment culture
Sensitivity (95% CI)
Specificity (95% CI)
Positive
Negative
Rapid test
198 (86%)
33 (11%)
86% (81–91%)
89% (85–92%)
31 (14%)
272 (89%)