Mode of Delivery according to Leisure Time Physical Activity before and during Pregnancy: A Multicenter Cohort Study of Low-Risk Women

Table 4

Adjusted odds ratios for a more complicated delivery, that is, emergency C-section (versus any vaginal delivery) or emergency C-section and vacuum extractor (versus spontaneous vaginal delivery) according to a physical activity sum score covering the time period from one year before pregnancy and all three pregnancy trimesters. The Danish Dystocia Study. .

Physical activity sum score		95% CI	value for trend
Low activity level	1.28	1.04–1.58	0.0029
Moderate activity level	1	—
High activity level	0.77	0.58–1.02

for maternal age, educational level when secondary education is completed, smoking, and prepregnancy body mass index.
C-section = caesarean section, OR = odds ratio, and CI = confidence interval.