Table 2.

Linear regression to assess the change in OOPE by duration of stay and mode of birth

	OOPE in USD (95 % CI)	ß coefficient	p-value
Constant	30.2 (24.9, 35.4)		0.000
Per day OOPE	1.5 (1.2, 1.8)	0.093	0.000
Spontaneous vaginal birth	Reference
Assisted vaginal birth	-0.2 (-5.7, 5.3)	-0.001	0.946
Caesarean birth	7.0 (1.7, 12.3)	0.111	0.01

Adjusting with hospitals