Fig. 1: Distribution of reported sleep duration.
From: Reported sleep duration reveals segmentation of the adult life-course into three phases
a Distribution across 730,187 participants over 63 countries (M = 7.01 h, SD = 1.07 h). b Reported sleep duration is shorter for men (M = 6.94 h, SD = 1.04 h) than women (M = 7.07 h, SD = 1.09 h). c Reported sleep duration across the adult lifespan. This evolution can be split in 3 phases: a sharp decrease from 19 years to 33 years, a slower decrease from 34 years to 53 years, and a re-increase from 54 years onwards. d Proportion of short (5 h) and long (9–10 h) sleepers per gender and age group. e Reported sleep duration across age for each gender (381,153 men, 349,034 women), level of education (204,017 secondary, 526,170 tertiary), commute duration (291,822 less than 30 min, 254,362 30 min to 1 h, 183,764 h plus) and home environment (222097 city, 508090 non city). f Reported sleep duration across age for WEIRD (n = 526,136) and non-WEIRD (n = 204,051) populations. WEIRD stands for Western, Educated, Industrialized, Rich and Democratic26. Data points correspond to the average reported sleep duration within 3-year windows. Error bars correspond to 95% confidence intervals.
