From: Increased postpartum haemorrhage, the possible relation with serotonergic and other psychopharmacological drugs: a matched cohort study
Crude Odds
Adjusted Oddsa
95% C.I.
Outcome before matching
 Postpartum haemorrhage
2.1
0.9–4.9
Outcome after matching
3.0
1.0–8.4
3.3
1.1–9.8