Infant–parent co-sleeping and the risk of SIDS
| Co-sleeping routine | Cases | Controls | Univariate† | Multivariate* | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | OR | 95% CI | p value | OR | 95% CI | p value | |
| *Adjusted for maternal age, education, smoking and drinking during pregnancy, social disadvantage, z scores for weight by gestation, whether breast feeding was initiated at birth, baby being ill, crying/colic problems, symptoms in 48 h prior to last/reference sleep, tog of bed covering ⩾10, use of pillows, duvets, prone position, and absence of routine soother use during the last/reference sleep period. | ||||||||||
| †Adjusted for infant age at death/interview. | ||||||||||
| ‡Information not available on one infant. Difference in number of co-sleepers during the last sleep between (a) and (b) due to the inclusion in (a) only of infants who were co-sleeping specifically at the time of death/awakening, while (b) refers to all infants who were co-sleeping during this sleep period, including those who were placed back in their own cot/bed prior to or following being in adults’ bed/sofa/armchair. | ||||||||||
| §Odds ratio (OR) not available due to the lack of any control infants who co-slept on sofas/armchairs. | ||||||||||
| Usual practice (night) | ||||||||||
| No | 114 | 73 | 587 | 95 | ref | ref | ||||
| Yes | 42 | 27 | 33 | 5 | 5.79 | 3.31 to 10.13 | <0.001 | 4.31 | 1.07 to 17.37 | <0.05 |
| Last/reference sleep period (a) | ||||||||||
| No | 87 | 56 | 587 | 95 | ref | ref | ||||
| Yes | 68 | 44 | 32‡ | 5 | 7.34 | 1.54 to 34.92 | <0.01 | 16.47 | 3.72 to 72.75 | <0.001 |
| Bedsharing during last sleep period (b) | ||||||||||
| No bedsharing | 76 | 50 | 483 | 78 | Ref | ref | ||||
| Put back in cot | 23 | 15 | 106 | 17 | 1.07 | 0.21 to 5.41 | 0.93 | 1.29 | 0.41 to 3.95 | 0.66 |
| Bedsharing entire sleep period | 47 | 31 | 31 | 5 | 5.25 | 1.09 to 25.25 | <0.05 | 9.28 | 1.69 to 50.90 | <0.05 |
| Co-sleeping on sofa/armchair | 6 | 4 | 0 | 0 | § | § | § | § | § | § |