TABLE 3

Stratified and Pooled Multivariable ORs (95% CIs) of SIDS for Duration of Exclusive Breastfeeding

Duration moNZCDS GeSIDSIMSScottishECASCESDISWISSIrishPooled Model 1a (n = 3397)Pooled Model 2bPooled Model 3c (n = 4319)Pooled Model 4d (n = 6006)
Never1.001.001.001.001.00Not availableNot available1.001.001.001.00
>0–21.02 (0.56–1.84)0.70 (0.41–1.19)0.81 (0.39–1.69)0.61 (0.26–1.44)1.27 (0.46–3.48)0.68 (0.33–1.42)0.82 (0.59–1.14)0.75 (0.58–0.98)0.82 (0.67–1.01)
>2–40.47 (0.27–0.83)0.51 (0.29–0.90)0.61 (0.04–8.83)0.63 (0.12–3.23)0.48 (0.15–1.53)0.09 (0.02–0.53)0.61 (0.42–0.87)0.44 (0.32–0.60)0.40 (0.31–0.51)
4–60.56 (0.15–2.07)0.31 (0.17–0.58)UndefinedUndefined0.60 (0.14–2.54)3.14 (0.56–17.55)0.46 (0.29–0.74)0.47 (0.31–0.71)0.37 (0.26–0.52)
  • —, Data were not available because these 2 studies had no data on exclusive breastfeeding.

  • a Model 1 controlled for sleep position at last sleep, maternal smoking during pregnancy, bed-sharing in the last sleep (infant sleeping with another person on the same surface), room-sharing in the last sleep (infant sleeping in the same room as an adult caregiver but on a separate surface), dummy or pacifier in the last sleep, maternal age, prenatal care, marital status, parity, maternal education, SES, infant age, infant sex, admission to a special care infant unit, season at death, birth weight, gestational age, multiple pregnancy, and cesarean delivery.

  • b Model 2 could not be run because the CESDI and SWISS studies had no data on exclusive breastfeeding.

  • c Model 3 controlled for variables in model 2, except for season and SES, to include the ECAS and Irish studies.

  • d Model 4 controlled for variables in model 3, except for antenatal care and maternal education, to include the Scottish study.