Weekend and off-hour effects on the incidence of cerebral palsy: contribution of consolidated perinatal care

Table 4 Odds ratios for weekend and off-hour effects on cerebral palsy for delivery with emergent caesarian section

Variable	Bivariate	Model 1	Model 2
Perinatal care centers
Comprehensive	1.00	1.00	1.00
Regional	2.19, 1.40–3.43	2.24, 1.42–3.53	2.35, 1.47–3.77
Day
Weekday	1.00	1.00	1.00
Weekend	1.89, 1.19–2.99	1.75, 1.09–2.80	1.72, 1.06–2.81
Shift
Day	1.00	1.00	1.00
Quasi-night	1.06, 0.61–1.84	1.04, 0.59–1.81	1.15, 0.64–2.07
Night	2.46, 1.45–4.17	2.40, 1.40–4.11	2.29, 1.30–4.02
Hosmer–Lemeshow test		P = 0.700	P = 0.561

Data are expressed as odds ratios and 95% confidence intervals with logistic regression models
Cases: N = 92, controls: N = 920; covariates: (Model 5) birth year; (Model 6) adding birth year, prescription of prostaglandin, that of oxytocin, maternal age, parity, pregnancy-induced hypertension, preterm labor, gestational week, and standard deviation for birth weight

ISSN: 1347-4715