Table 2

Interrupted time series analysis for selected perinatal outcomes

Outcome	With overdispersion
	Intervention		Time
	IRR (95% CI)	P value	IRR (95% CI)	P value
Perinatal death rate	1.17 (0.79 to 1.74)	0.44	0.94 (0.89 to 1.00)	0.06
Stillbirth rate	1.31 (0.84 to 2.06)	0.23	0.93 (0.87 to 1.00)	0.039
Early neonatal death rate	0.35 (0.22 to 0.56)	<0.001	1.09 (1.01 to 1.17)	0.01
CFR for intrapartum-related hypoxia	0.77 (0.57 to 1.04)	0.09	0.98 (0.93 to 1.03)	0.40
CFR for prematurity	1.01 (0.64 to 1.59)	0.96	0.94 (0.88 to 0.99)	0.04
CFR for infections	2.25 (0.17 to 28.9)	0.54	1.04 (0.78 to 1.39)	0.77