Vaginal-perianal or vaginal-perineal compared with vaginal-rectal culture-based screening for Group B Streptococci (GBS) colonization during the third trimester of pregnancy: a systematic review and meta-analysis

Table 3 Quality assessment

Study (year; country)	Quality Domains
	Selection				Comparability	Outcome
	Representativeness of exposed cohort	Selection of nonexposed cohort	Ascertainment of exposure	Demonstration that outcome of interest was not present at start of study	Comparability of cohorts on the basis of the design or analysis	Assessment of outcome	Adequate follow-up length	Adequacy of follow up
Jamie et al. (2004, USA) [11]	*	*	*	*	*	*	*	*
Trappe et al. (2011, USA) [12]	*	*	*	*	*	*	*	*
Huang et al. (2019, Switzerland) [19]	*	*	*	*	*	*	*	*

Quality was assessed using the Newcastle–Ottawa Scale as the included studies were all nonrandomized [14]. The three studies were considered high quality as they were allotted the maximum number of allowable stars for each tested category

ISSN: 1471-2393