| Study group (n = 112) | Control group (n = 224) | P value | Unadjusted RR (95%CI) | Adjusted RR (95%CI) | P value |
---|
PTB (%/n) | 18.8 (21) | 2.8 (7) | 0.000 | 7.0(2.9–16.9) | 6.8a (2.7–16.7) | 0.000 |
PPROM (%/n) | 11.6 (13) | 0.9 (2) | 0.001 | 13.0(3.0-56.6) | 14.1b (3.2–62.5) | 0.001 |
Malpresentation (%/n) | 45.5 (51) | 3.1 (7) | 0.000 | 14.6(6.8–31.1) | 13.2c (6.3–27.7) | 0.000 |
CD (%/n) | 90.2 (101) | 21.0(47) | 0.000 | 4.3(3.3–5.6) | 4.4d (3.3–5.7) | 0.000 |
CDe (%/n) | 87.9 (80/91e) | 17.0 (38/182e) | 0.000 | 4.2 (3.1–5.6) | 4.3d (3.2–5.9) | 0.000 |
- Data are presented as percent (numbers) or mean ± SD
- RR, risk ratio; CI, confidence interval; PTB, preterm birth, PPROM, preterm premature rupture of membranes; CS, cesarean section
- a Adjusted for age, BMI, level of education; ART, PROM, hypertensive disorders, gestational diabetes; placenta previa; placenta abruption;
- b Adjusted for age, BMI, level of education, hypertensive disorders, gestational diabetes;
- c Adjusted for ages, BMI, parity, birthweight, placenta previa;
- d Adjusted for age, ART, BMI, level of education, hypertensive disorders, gestational diabetes; ICP, placenta previa; placenta abrupt
- e Represent the number limited to nulliparous women