TABLE 1

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

NZCDSGeSIDCIMSScottishECASCESDISWISSIrishPooled
Any breastfeeding, mo
Never1.001.001.001.001.001.001.001.001.00
>0–20.79 (0.55–1.13)0.70 (0.48–1.02)0.43 (0.28–0.65)0.65 (0.41–1.05)0.56 (0.36–0.88)0.61 (0.46–0.81)0.79 (0.37–1.67)0.68 (0.51–0.92)0.61 (0.54–0.69)
>2–40.49 (0.33–0.71)0.18 (0.13–0.25)0.07 (0.03–0.21)0.16 (0.06–0.47)0.21 (0.13–0.33)0.42 (0.28–0.64)0.42 (0.16–1.12)0.16 (0.09–0.29)0.26 (0.22–0.30)
>4–60.32 (0.19–0.53)0.10 (0.06–0.16)0.06 (0.01–0.51)0.20 (0.04–0.90)0.20 (0.12–0.33)0.39 (0.20–0.78)0.15 (0.02–1.40)0.04 (0.01–0.26)0.18 (0.14–0.23)
>60.19 (0.09–0.37)0.15 (0.10–0.25)UndefinedUndefined0.07 (0.03–0.14)0.25 (0.09–0.70)0.11 (0.01–0.95)0.22 (0.07–0.72)0.13 (0.10–0.18)
Exclusive breastfeeding, mo
Never1.001.001.001.001.00Not availableNot available1.001.00
>0–20.88 (0.58–1.34)0.40 (0.28–0.56)0.46 (0.28–0.76)0.63 (0.39–1.03)0.98 (0.73–1.32)0.40 (0.28–0.58)0.61 (0.53–0.71)
>2–40.41 (0.27–0.64)0.22 (0.15–0.33)0.18 (0.02–1.51)0.21 (0.06–0.73)0.29 (0.21–0.41)0.12 (0.05–0.30)0.25 (0.20–0.30)
4–60.32 (0.10–1.03)0.13 (0.09–0.20)UndefinedUndefined0.19 (0.12–0.31)0.48 (0.16–1.41)0.16 (0.12–0.21)