Screening for Bacterial Vaginosis in Pregnancy, Table 1. Descriptive features and effect sizes of included studies

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Table 1. Descriptive features and effect sizes of included studies

Study (Jadad 40 score*)	No. completed/ enrolled	Screening methods/ Screening timing (weeks' gestation)	PTD <37 weeks	PTD <34 weeks	PTD <32 weeks	PPROM	LBW <2500 g
Study (Jadad 40 score*)	No. completed/ enrolled	Screening methods/ Screening timing (weeks' gestation)	PTD <37 weeks	ARR	(90% CI)**	PPROM	LBW <2500 g
Average-risk women
McGregor³⁰ (3)	129/142	Gram stain + Amsel (16 to 27)	-0.077 (-0.169 to 0.014)			-0.006 (-0.068 to 0.056)	-0.092 (-0.176 to 0.008)
Joesoef³¹ (4)	681/745	Gram stain (14 to 26)	-0.015 (-0.059 to 0.029)		-0.021 (-0.044 to 0.003)		-0.021 (-0.056 to 0.012)
McDonald³⁸ (4)	480/480	Gram stain (16 to 26)				0.0017 (-0.010 to 0.044)	-0.003 (-0.034 to 0.027)
Carey³⁹ (5)	1919/1953	Gram stain (16 to 23)	0.030 (-0.021 to 0.028)		0.004 (-0.008 to 0.016)	-0.014 (-0.028 to 0.000)	0.005 (-0.019 to 0.029)
High-risk women
Morales³⁶ (4)	80/94	Amsel (13 to 20)	0.263 (0.096 to 0.429)	0.066 (-0.035 to 0.166)		0.288 (0.149 to 0.427)	0.197 (0.042 to 0.362)
Hauth³⁷ (4)	177/177	Amsel (<24)	0.183 (0.052 to 0.314)
McDonald³⁸ (4)	34/34	Gram stain (16 to 26)	0.294 (0.082 to 0.507)	0.118 (-0.061 to 0.296)		0.176 (0.024 to 0.329)	0.235 (0.005 to 0.465)
Carey³⁹ (5)	210/213	Gram stain (16 to 23)	-0.075 (-0.189 to 0.039)	0.012 (-0.055 to 0.078)		-0.036 (-0.101 to 0.030)	-0.040 (-0.137 to 0.057)
Vermeulen³⁵ (4)	22/22	Gram stain (26)		0.000 (-0.202 to 0.202)
Measures quality of randomized controlled trials on a 5-point scale. *Negative value indicates that outcome was more common in treated group than in controls (i.e., adverse effect of treatment). PTD, preterm delivery; PPROM, preterm premature rupture of membranes; LBW, low birth weight; ARR, absolute risk reduction; CI, confidence interval.

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