Table 3. Primary outcome measures, by group.

	Control			Oxytocin
Outcome	N	Cases	Percentage (%)	N	Cases	Percentage (%)	Relative Risk (95% CI)	p-value
PPH-1	887	49	5.5	682	18	2.6	0.491 (0.274–0.882)	0.02
PPH-2	887	96	10.8	682	26	3.8	0.338 (0.181–0.630)	0.001
PPH-3	888	99	11.1	682	28	4.1	0.361 (0.196–0.664)	0.001
Severe PPH	887	8	0.9	682	1	0.1	1.000 (0.013–1.700)	0.12

Note: The intra-class correlation coefficients for PPH-1, PPH-2, and PPH-3 were 0.012, 0.051, and 0.050, respectively.