Postgraduate Epidemiology Program, Federal University of Pelotas, Pelotas, RS, Brazil.
J Epidemiol Community Health. 2013 Mar;67(3):245-9. doi: 10.1136/jech-2012-201145. Epub 2012 Oct 25.
To investigate the association between bed-sharing with the mother at 3 months of age and incidence of hospitalisation due to pneumonia and diarrhoea between 3 and 12 months.
The 2004 Pelotas Birth Cohort included all live births to mothers living in Pelotas, Brazil, in 2004. Information on bed-sharing was obtained at the 3-month follow-up visit, and on hospitalisations at the 12-month visit, both based on mothers' reports. Only singleton infants with complete information on hospitalisation were analysed.
3906 infants were included. The bed-sharing prevalence at 3 months was 46.4% (95% CI 44.9 to 48.0%). The incidence of pneumonia admissions between 3 and 12 months was 3.6% (95% CI 3.3 to 4.2%) and diarrhoea, 0.9% (95% CI 0.6 to 1.2%). In crude analyses, bed-sharing with the mother was associated with higher incidence of hospitalisation due to both pneumonia and diarrhoea. There was interaction between bed-sharing and duration of breastfeeding regarding the chance of admission due to pneumonia. Among infants breastfed for 3 months or less, the chance of hospitalisation due to pneumonia among bed-sharers was almost twice as high as among non-bed-sharers (adjusted OR 1.96; 95% CI 1.08 to 3.55). There was no association between bed-sharing and hospitalisation due to pneumonia among infants breastfed for longer than 3 months in crude or adjusted analyses. The association between bed-sharing and admissions due to diarrhoea lost statistical significance after allowing for confounders.
The effect of bed-sharing in infancy on the risk of hospitalisation due to pneumonia depends on breastfeeding, such that weaned children present higher risk.
探讨 3 月龄时与母亲同床共睡与 3 至 12 月龄期间因肺炎和腹泻住院的相关性。
2004 年佩洛塔斯出生队列纳入了 2004 年在巴西佩洛塔斯居住的所有活产母亲所生的婴儿。3 个月随访时获取同床共睡信息，12 个月随访时获取住院信息，均基于母亲报告。仅对有完整住院信息的单胎婴儿进行分析。
共纳入 3906 名婴儿。3 月龄时同床共睡的比例为 46.4%（95%可信区间 44.9%至 48.0%）。3 至 12 个月时肺炎住院的发生率为 3.6%（95%可信区间 3.3%至 4.2%），腹泻为 0.9%（95%可信区间 0.6%至 1.2%）。在未校正分析中，与母亲同床共睡与肺炎和腹泻住院的发生率较高相关。同床共睡与母乳喂养持续时间之间存在交互作用，与肺炎住院有关。母乳喂养 3 个月或以下的婴儿中，同床共睡者肺炎住院的几率是不同床共睡者的近 2 倍（校正比值比 1.96；95%可信区间 1.08 至 3.55）。在未校正或校正分析中，母乳喂养时间超过 3 个月的婴儿中，同床共睡与肺炎住院之间均无相关性。同床共睡与腹泻住院之间的相关性在调整混杂因素后失去统计学意义。
婴儿期同床共睡对肺炎住院风险的影响取决于母乳喂养，因此，断乳后的儿童风险更高。
