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Field Before After
Trial Status in_development completed
Last Published December 11, 2017 02:40 PM June 05, 2021 03:41 PM
Study Withdrawn No
Intervention Completion Date April 23, 2019
Data Collection Complete Yes
Final Sample Size: Number of Clusters (Unit of Randomization) 452 participants
Was attrition correlated with treatment status? No
Final Sample Size: Total Number of Observations 8,454 participant-nights
Final Sample Size (or Number of Clusters) by Treatment Arms Control - 152, Devices + Encouragement - 150, Devices + Incentives - 150
Public Data URL
Is there a restricted access data set available on request? No
Program Files Yes
Program Files URL
Data Collection Completion Date April 23, 2019
Is data available for public use? Yes
Keyword(s) Health, Labor, Welfare Health, Labor, Welfare
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Field Before After
Paper Abstract The urban poor in developing countries face challenging living environments, which may interfere with good sleep. Using actigraphy to measure sleep objectively, we find that low-income adults in Chennai, India, sleep only 5.5 hours a night on average despite spending 8 hours in bed. Their sleep is highly interrupted, with sleep efficiency—sleep per time in bed—comparable to those with disorders such as sleep apnea or insomnia. A randomized three-week treatment providing information, encouragement, and improvements to home sleep environments increased sleep duration by 27 minutes a night by inducing more time in bed. Contrary to expert predictions and a large body of sleep research, increased nighttime sleep had no detectable effects on cognition, productivity, decision making, or well being, and led to small decreases in labor supply. In contrast, short afternoon naps at the workplace improved an overall index of outcomes by 0.12 standard deviations, with significant increases in productivity, psychological well-being, and cognition, but a decrease in work time.
Paper Citation Pedro Bessone, Gautam Rao, Frank Schilbach, Heather Schofield, Mattie Toma, The Economic Consequences of Increasing Sleep Among the Urban Poor, The Quarterly Journal of Economics, 2021;, qjab013,
Paper URL
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