Table 3 Total blood loss for all maternities and incidence of bleeds > 500 mL
|  |  | Total measured blood loss (mL) Median (25th to 75th percent) | Postpartum haemorrhage ≥ 500 mL Incidence (95% CI)/100 maternities | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Unit | Maternities included in analysis | All maternities | Unassisted vaginal delivery | Instrumental vaginal delivery | Elective caesarean section Category 4 | Non Elective caesarean section Category 1–3 | All maternities | Unassisted vaginal delivery | Instrumental vaginal delivery | Elective caesarean section Category 4 | Non Elective caesarean section Category 1–3 |
1 | 6622 | 300 (200–500) | 300 (200–400) | 500 (300–800) | 450 (300–700) | 500 (350–750) | 30.9 [29.8–32.0] | 18.1 [16.9–19.3] | 53.8 [50.6–57.0] | 48.8 [45.4–52.3] | 55.4 [51.8–59.0] |
2 | 241 | 421 (265–651) | 301 (199–450) | 532 (344–961) | 800 (533–1165) | 602 (438–890) | 40.7 [34.7–47.0] | 17.4 [12.0–24.6] | 53.8 [35.5–71.2] | 88.6 [74.0–95.5] | 69.0 [54.0–80.9] |
3 | 925 | 400 (250–732) | 283 (157–448) | 600 (400–1000) | 559 (361–820) | 700 (437–940) | 40.4 [37.3–43.6] | 18.6 [15.4–22.3] | 66.7 [56.1–75.8] | 55.0 [47.5–62.2] | 70.7 [63.9–76.7] |
4 | 892 | 400 (245–700) | 300 (199–450) | 500 (333–860) | 543 (413–850) | 677 (454–911) | 39.1 [36.0–42.4] | 19.1 [16.0–22.7] | 55.7 [45.3–65.6] | 68.3 [59.6–76.0] | 71.7 [64.4–78.0] |
All | 8680 | 350 (219–600) | 300 (200–400) | 500 (300–850) | 500 (300–750) | 550 (369–850) | 33.0 [32.0–34.0] | 18.2 [17.2–19.3] | 54.9 [52.0–57.8] | 53.0 [50.1–55.9] | 60.9 [58.0–63.7] |