Table 3

Crude odds ratios (OR) for SIDS by maternal smoking career in Scandinavia 1992 to 1995, the Nordic epidemiological SIDS study

Maternal smoking careerCasesControlsOR95% CIp
No%No%
Never smoked6730.743056.31.0Reference
Early cessation3-150 94.1688.90.70.3 to 1.40.30
Late cessation3-151 104.6547.11.10.5 to 2.40.73
Partial cessation3-152 41.8283.71.10.4 to 3.20.92
Non-cessation12858.718424.14.53.1 to 6.5<0.001
  • 3-150 Stopped smoking when they became pregnant.

  • 3-151 Stopped smoking postpartum.

  • 3-152 Stopped during pregnancy but resumed smoking postpartum.