Department of Public Health, Environments and Society, London School of Hygiene & Tropical Medicine, London, UK
Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK.
BMJ Open. 2022 Oct 5;12(10):e061297. doi: 10.1136/bmjopen-2022-061297.
To examine the effects of high ambient temperature on infant feeding practices and childcare.
Secondary analysis of quantitative data from a prospective cohort study.
Community-based interviews in the commune of Bobo-Dioulasso, Burkina Faso. Exclusive breastfeeding is not widely practised in Burkina Faso.
866 women (1:1 urban:rural) were interviewed over 12 months. Participants were interviewed at three time points: cohort entry (when between 20 weeks' gestation and 22 weeks' postpartum), three and nine months thereafter. Retention at nine-month follow-up was 90%. Our secondary analysis focused on postpartum women (=857).
Daily mean temperature (°C) measured at one weather station in Bobo-Dioulasso. Meteorological data were obtained from publicly available archives (TuTiempo.net).
Self-reported time spent breastfeeding (minutes/day), exclusive breastfeeding of infants under 6 months (no fluids other than breast milk provided in past 24 hours), supplementary feeding of infants aged 6-12 months (any fluid other than breast milk provided in past 24 hours), time spent caring for children (minutes/day).
The population experienced year-round high temperatures (daily mean temperature range=22.6°C-33.7°C). Breastfeeding decreased by 2.3 minutes/day (95% CI -4.6 to 0.04, =0.05), and childcare increased by 0.6 minutes/day (0.06 to 1.2, =0.03), per 1°C increase in same-day mean temperature. Temperature interacted with infant age to affect breastfeeding duration (=0.02), with a stronger (negative) association between temperature and breastfeeding as infants aged (0-57 weeks). Odds of exclusive breastfeeding very young infants (0-3 months) tended to decrease as temperature increased (OR=0.88, 0.75 to 1.02, =0.09). There was no association between temperature and exclusive breastfeeding at 3-6 months or supplementary feeding (6-12 months).
Women spent considerably less time breastfeeding (~25 minutes/day) during the hottest, compared with coolest, times of the year. Climate change adaptation plans for health should include advice to breastfeeding mothers during periods of high temperature.
探讨高温环境对婴儿喂养方式和儿童保育的影响。
对前瞻性队列研究的定量数据进行二次分析。
布基纳法索波波迪乌拉索市的社区访谈。布基纳法索母乳喂养并不广泛。
在 12 个月内对 866 名妇女（1:1 城市：农村）进行了访谈。参与者在三个时间点接受了访谈：队列进入时（妊娠 20 周至 22 周后）、3 个月后和 9 个月后。9 个月随访时的保留率为 90%。我们的二次分析集中在产后妇女（=857）。
在波波迪乌拉索的一个气象站测量的每日平均温度（°C）。气象数据来自公开档案（TuTiempo.net）。
自我报告的母乳喂养时间（分钟/天）、6 个月以下婴儿的纯母乳喂养（过去 24 小时内除母乳外不提供任何液体）、6-12 个月婴儿的补充喂养（过去 24 小时内除母乳外提供任何液体）、照顾儿童的时间（分钟/天）。
该人群经历了全年的高温（日平均温度范围为 22.6°C-33.7°C）。与当天平均温度每升高 1°C 相比，母乳喂养减少 2.3 分钟/天（95%CI-4.6 至 0.04，=0.05），儿童保育增加 0.6 分钟/天（0.06 至 1.2，=0.03）。温度与婴儿年龄相互作用，影响母乳喂养持续时间（=0.02），随着婴儿年龄的增长（0-57 周），温度与母乳喂养之间的关联更强（负相关）。随着温度升高，纯母乳喂养非常小的婴儿（0-3 个月）的几率趋于降低（OR=0.88，0.75 至 1.02，=0.09）。温度与 3-6 个月或补充喂养（6-12 个月）之间没有关联。
与一年中最凉爽的时候相比，妇女在一年中最热的时候母乳喂养的时间要少得多（每天约 25 分钟）。卫生方面的气候变化适应计划应包括在高温期间为母乳喂养母亲提供建议。
