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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Am J Phys Anthropol. 2018 Jul;166(3):590–600. doi: 10.1002/ajpa.23454

Table 2.

Men’s nightly activities from self-report. Activities ranked from most to least commonly reported by tertile of sleep onset time. Activity profiles for quantiles 1 and 2 show minimal differences, but night hunting/fishing and watching TV are listed at later sleep onset times. Note that the unit of measure for this analysis is a single evening, and a single participant could potentially contribute data points to all three quantiles.

Quantile 1 Quantile 2 Quantile 3
Onset 6:24PM-8:42PM 8:42PM-9:48PM 9:48PM-8:54AM
Mean sleep duration 445.7 minutes 397.6 minutes 293.5 minutes
Mean sleep offset 5:24AM 5:26AM 6:04AM
Activity 1 Relax (12) Relax (20) Hunt/fish (12)
Activity 2 Listen to Radio (12) Listen to Radio (12) Just sleep (9)
Activity 3 Just sleep (7) Just sleep (8) Relax (8)
Activity 4 Other (2) Social visit (2) Listen to Radio (7)
Activity 5 Work around the house (2) Other (1) Social visit (3)
Activity 6 Watch TV (1) Watch TV (3)
Activity 7 Other (1)
Activity 8 Work around the house (1)
Total observations 36 43 44
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