Table 1.

Estimated rates of blood loss as % in each category in study population (allowing for weighted sampling)

Category	Blood loss (ml)	All (%)	95% CI
No PPH	<500	66.3	63.8–68.8
PPH – All	≥500	33.7	31.2–36.2
PPH - Minor	500–999	24.3	22.0–26.6
PPH – Moderate	1000–1499	5.5	4.8–6.1
PPH – Severe	1500–1999	2.0	1.6–2.4
	2000–2499	1.1	0.74–1.5
	≥1500	3.9	3.3–4.6
	≥2500	0.82	0.63–1.0