Table 3.

Mean per-woman costs (US$, 2016 price base) and risk of pelvic infection

		Antibiotic prophylaxis (n=1660); raw mean (SD)	Placebo (n=1680); raw mean (SD)	Difference (antibiotic prophylaxis − placebo)
				Adjusted mean*	Normal-based 95% CIs†	Normal-based 95% CIs†
Mean per-woman costs (US$)
	Pre-surgery prophylactic antibiotics	0·084 (0·000)	0·000 (0·000)	0·084	..	..
	Post-surgery antibiotics	0·797 (2·964)	1·068 (3·535)	−0·270	−0·490	−0·050
	Other medications	0·176 (1·603)	0·212 (2·593)	−0·031	−0·179	0·117
	Laboratory examinations	0·113 (0·499)	0·154 (0·730)	−0·045	−0·086	−0·005
	Complications	0·152 (1·678)	0·262 (3·274)	−0·121	−0·308	0·066
	Hospital services	0·280 (2·452)	0·385 (2·406)	−0·112	−0·287	0·063
	Total cost (country-specific unit cost estimates)	1·601 (6·419)	2·082 (8·564)	−0·496	−1·019	0·026
	Total cost (regional unit cost estimates)	2·350 (12·548)	3·040 (14·803)	−0·718	−1·693	0·257
Risk of pelvic infection		0·041 (0·198)	0·054 (0·225)	−0·013	−0·028	0·002

^*Adjusted for age, marital status, gestational age, previous miscarriage or stillbirth, evidence of induced abortion, HIV status, type of miscarriage surgery, surgeon, and residential characteristics.

^†CIs calculated via bias-corrected and accelerated bootstrapping (1000 replications).