Preoperative Variable
LIT N (180) Non-LIT N (231)
P value
Maternal age (years) 30 (25.5. – 34.5) 29 (25 – 33) 0.07
Parity 1 (0 – 1) 1 (0 – 2) <0.001
Race, n (%) <0.001
White 124 (69.3%) 126 (54.5%)
Black 24 (13.4%) 22 (9.5%)
Hispanic 6 (3.4%) 72 (31.2%)
Other 25 (14.0%) 11 (4.8%)
Prior PTB, n (%) 17 (9.8%) 31 (13.4%) 0.27
BMI (kg/m2) 23.9 (21 – 29.4) 28.2 (25.4 – 34.2) <0.001
sFGR, n (%) 80 (47.1%) 103 (45.0%) 0.68
CL < 25 mm, n (%) 11 (6.1%) 21 (9.4%) 0.22
Anterior placenta, n (%) 71 (39.4%) 102 (44.2%) 0.34
Recipient MVP (cm) 10.1 (8.5 – 12.45) 11 (9.3 – 13.3) 0.006
Quintero staging, n (%) 0.16
I 32 (17.8%) 27 (11.7%)
II 62 (34.4%) 70 (30.3%)
III 75 (41.7%) 118 (51.1%)
IV 11 (6.1%) 16 (6.9%)
Data are given as median (IQR) and n (%) PTB: preterm birth, BMI: body mass index, sFGR: selective fetal growth restriction, CL: cervical length, MVP: maximum vertical pocket Data are given as median (IQR) and n (%) PTB: preterm birth, BMI: body mass index, sFGR: selective fetal growth restriction, CL: cervical length, MVP: maximum vertical pocket Data are given as median (IQR) and n (%) PTB: preterm birth, BMI: body mass index, sFGR: selective fetal growth restriction, CL: cervical length, MVP: maximum vertical pocket Data are given as median (IQR) and n (%) PTB: preterm birth, BMI: body mass index, sFGR: selective fetal growth restriction, CL: cervical length, MVP: maximum vertical pocket