Betamethasone use and risk factors for pulmonary edema during the perinatal period: a single-center retrospective cohort study in Japan

Table 3 Results of multivariate survival analysis with Cox proportional hazard model

	Hazard ratio	95%CI	P-values
Multiple pregnancies	2.34	0.73–7.50	0.151
Preeclampsia	16.8	5.39–52.7	<0.001
Tocolytic agents	1.51	0.26–8.58	0.646
Tocolytic agents + betamethasone	11.3	2.66–48.1	0.001

Hazard ratio was estimated with Cox proportional hazard model adjusting for exposure time for relevant variables, and adjusted for preeclampsia, multiple pregnancies, and a combination use of tocolytic agents and betamethasone
CI Confidence intervals

ISSN: 1471-2393