From: Maternal drug use and the risk of anorectal malformations: systematic review and meta-analysis
 | Maternal use of painkiller |  | |||
---|---|---|---|---|---|
Ref. | First author, year | Exposure | ORcrude [95% CI] | ORadj [95% CI] | Adjustment/matching factors |
[58] | Hernandez, 2012 | Aspirin | 1.3 [0.79, 2.03] | – | – |
Ibuprofen Naproxen | 1.1 [0.89, 1.42] | – |  | ||
1.3 [0.84, 2.01] | – |  | |||
[60] | van Gelder, 2011 | Non-steroidal anti-inflammatory drugs | 1.4 [0.2, 10.7] | – | – |
[71] | Czeizel, 2000 | Acetylsalicylic acid | – | 2.3 [0.9, 5.6]b | Adjusted for maternal age, birth order, acute and chronic maternal disorders and other drug use |
 | 1.2 [0.7, 2.8]c | ||||
 | 1.3 [0.5, 3.9]d | ||||
[79] | Heinonen, 1977 | Aspirina | – | – | – |