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Table 1 Participants’ demographic data and descriptive statistics for each variable

From: Impact of sleep debt, social jetlag, and insomnia symptoms on presenteeism and psychological distress of workers in Japan: a cross-sectional study

  M SD Median Min Max
Age 49 9.49 50 22 68
BMI 22.95 3.65 22.4 13.89 40.12
Sleep debt (h) 1.01 0.84 1 0 5.14
Social jetlag (h) 1.18 1.87 0.75 0 19.00
Insomnia symptoms 7.75 5.38 7 0 28
Presenteeism 58.86 16.52 60 0 100
Psychological distress 4.55 5.60 2 0 24
  1. Note. M Mean, SD Standard deviation, BMI Body Mass Index