Prognosis and Prognostic Factors of Patients with Emergent Cerclage: A Japanese Single-Center Study
Table 3
Univariate analysis of risk factors among preterm deliveries less than 34 weeks.
<34 weeks (n = 20)
≥34 weeks (n = 103)
P-value
Age, median (IQR)
34 (32–36)
33 (30–37)
0.488
Primiparous, n (%)
9 (45)
35 (34)
0.445
Pregnancy by ART, n (%)
1 (5)
13 (13)
0.691
Presence of cervical polyp, n (%)
1 (5)
7 (7)
1.000
History of cerclage, n (%)
0 (0)
7 (7)
0.597
History of CS, n (%)
1 (5)
20 (19)
0.192
History of myomectomy, n (%)
1 (5)
1 (1)
0.300
Slight bleeding at admission, n (%)
2 (10)
5 (5)
0.318
Presurgical CL, mm (IQR)
8 (0–21)
16 (10–21)
0.082
Presurgical CL 0 mm, n (%)
8 (40)
12 (12)
0.003
Presence of sludge in ultrasound, n (%)
8 (40)
16 (16)
0.029
Presence of Lactobacillus
14 (70)
75 (73)
0.782
Presence of ureaplasma
7 (35)
35 (34)
1.000
Cervical elastase positive, n (%)
4 (20)
16 (16)
0.272
GA at emergency cerclage, week (IQR)
21 (18–24)
22 (20–23)
0.377
History of SPTB, n (%)
8 (40)
22 (21)
0.091
History of cerclage, n (%)
1 (5)
9 (9)
0.687
Duration between cerclage and discharge (days), median (IQR)
35 (21–84)
76 (13–98)
0.057
ART, assisted reproductive technology; CL, cervical length; CS, cesarean section; GA, gestational age; IQR, interquartile range; SPTB, spontaneous preterm birth. Long-term tocolysis and hospitalization management was employed for the majority of the patients. Thus, the duration of hospitalization was not included in logistic regression analysis.
