0966 Sleep-Wake Patterns in Mothers and Children in a Rural Community With Limited Access to Electricity: Results from the Ghana Randomized Air Pollution and Health Study

Abstract

Abstract Introduction Studies measuring objective sleep duration in rural/indigenous populations are limited, showing sleep duration similar to that of industrialized countries. Little is known about sleep duration in women of reproductive age, and children within these populations. Our study is the first to objectively characterize sleep in mothers and children in an agrarian community with limited access to electricity, utilizing data from the Ghana Randomized Air Pollution and Heath Study (GRAPHS). Methods The GRAPHS cohort, a cluster-randomized trial, evaluated the efficacy of clean fuels on birthweight and infant pneumonia incidence in central Ghana. The study initially recruited pregnant women and newborns in 2013. This study is now utilizing wrist-actigraphy to analyze sleep-wake patterns among mothers and children of GRAPHS. We have thus far analyzed actigraphy in 39 mothers and 49 children (including 25 mother-child pairs), using the Motionlogger-MicroWatch with the Cole-Kripke algorithm to assess total sleep time (TST). We report baseline characteristics and sleep-wake patterns of our sample. Results Mean age of mothers was 33.5 years, (range 22-48), and mean age of children was 3.9 years (3-4). Average nights recorded were 4 (standard deviation [SD] 2.1). For mothers, average median time-in-bed was 7.9 (SD 1.2) hours, TST was 6.4 (SD .9) hours, and sleep efficiency was 82% (SD 7.9). Median bedtime was 9:33pm (SD 1.5 hours), and median wake-time was 5:56am (SD 1.4 hours). For children, average median time-in-bed was 9.9 (SD 1.0) hours, TST was 8.2 (SD 0.9) hours, and sleep efficiency was 83% (SD 6). Median bedtime was 8:03pm (SD 0.8 hours), and median wake-time was 6:06am (SD 0.6 hours). There was no correlation between sleep measures in mother-child pairs. Conclusion In an agrarian Ghanaian community with limited access to electricity, objective sleep measures in women were similar to prior studies conducted in indigenous/rural populations of developing African countries (Ndiaye et.al.2007, Samson et.al.2016), though data in children is lacking for comparison. When compared with post-industrialized countries, objective sleep measures for this age group of non-gravid women are sparse. In toddlers however, TST was lower in our cohort when compared with objective sleep amongst toddlers in industrialized nations. Support 2K24HL109156-06A1