Table 3.

 Distribution of postpartum haemorrhage after 307 756 Swedish vaginal deliveries (1997-2009) according to characteristics of pregnancy

	Total	No (%) with haemorrhage	OR (95% CI)
Gestational diabetes:
No	306 067	14 015 (4.6)	1.00
Yes	1689	106 (6.3)	1.40 (1.14 to 1.71)
Pre-eclampsia:
No	301 352	13 546 (4.5)	1.00
Yes	6404	575 (8.9)	2.10 (1.92 to 2.29)
Chorioamnionitis:
No	307 539	14 108 (4.6)	1.00
Yes	217	13 (6.0)	1.33 (0.76 to 2.32)
Placenta previa/accrete:
No	307 639	14 095 (4.6)	1.00
Yes	117	26 (22.2)	5.95 (3.85 to 9.20)
Abruptio placenta:
No	307 616	14 113 (4.6)	1.00
Yes	140	8 (5.7)	1.26 (0.62 to 2.57)