Transvaginal Sonographic Evaluation of the Cervix in Asymptomatic Singleton Pregnancy and Management Options in Short Cervix

Table 3

Studies of CL in high-risk women with spontaneous PTD.

Authors	𝑛	GW at testing	Outcome (GW)	Cutoff value (mm)	Sen. (%)	Spec. (%)	PPD (%)	NPD (%)	RR
Berghella et al. [43]	96	14–30	<35	25.0	59.0	85.0	45.0	91.0	4.8
Owen et al. [48]	183	16–24	<35	25.0	69.0	80.0	55.0	88.0	3.4
Crane and Hutchens [66]	193	24–30	<35	30.0	63.6	77.2	28.0	93.8	—
Adhikari et al. [41]	79	24–28	<37	29.5	75.0	80.1	71.4	90.7	—
			<34	26.5	50.0	85.5	23.1	95.2	—
Berghella et al. [68]	45	16–24	<35	25.0	60.0	69.0	35.0	86.0	2.5
Crane et al. [69]	75	24–30	<37	30.0	70.0	90.8	53.8	95.2	—
Airoldi et al. [70]	64	14–23^+6	<35	25.0	71.0	91.0	50.0	95.0	13.5
Visintine et al. [72]	131	14–24	<35	25.0	53.0	75.0	48.0	78.0	2.2