Table 3:

Delivery Outcomes Between Cerclage and Control Group

Variable	No Cerclage n=39	Cerclage n=96	P	OR (95%CI), p	aOR (95% CI), p*
Spontaneous PTB
sPTB <32w	11/39 (28.2%)	10/96 (10.4%)	0.017	0.23 (0.08– 0.70), 0.010	0.24 (0.06–0.90), 0.035
sPTB <34w	17/39 (43.6%)	24/96 (25%)	0.040	0.33 (0.13–0.83), 0.019	0.38, (0.12–1.16), 0.089
sPTB <36w	24/39 (61.54%)	38/96 (39.6%)	0.035	0.29 (0.12– 0.70), 0.006	0.34 (0.04–0.81), 0.013
PTB (all indications)
PTB <32w	14/39 (35.9%)	16/96 (16.7%)	0.022	0.3 (0.11– 0.80), 0.016	0.31 (0.10–0.86), 0.018
PTB <34w	23/39 (60.0%)	31/96 (32.3%)	0.006	0.28 (0.12–0.68), 0.005	0.38 (0.11–1.01), 0.055
PTB <36w	33/39 (84.6%)	59/96 (61.5%)	0.009	0.27 (0.10–0.77), 0.014	0.37 (0.10–0.84), 0.030

Data presented is n (%) or median (range). P-values calculated with Fishers exact test. Significant values (p<0.05) are indicated in bold.

sPTB, spontaneous preterm birth; PTB, preterm birth; aOR, adjusted odds ratio; CI, confidence interval; w, weeks

^*aOR: adjusted for age, race, BMI, insurance, IVF, chorionicity, multifetal reduction