Table 2.

Summary of collected measures, adjusted for sex and age.

Variable	M ± SD	Association With Sex	Association With Age
MEQ score	62.8 ± 9.9	ns	r = 0.43
MSFsc (mid-sleep time on free days corrected for sleep debt on work days), min past midnight	193 ± 79	ns	r = 0.34
MEQ Question 19 score “Definitely a morning type” = 6 points, “Rather more a morning type” = 4 point, “Rather more an evening type than a morning type” = 2 points, “Definitely an evening type” = 1 point	4.0 ± 1.9	ns	r = 0.29
Dissipation of sleep pressure (MEQ factor, scale points)	26.3 ± 5.7	Unpaired t test, t = 2.89, p < 0.05*	r = 0.46
Build-up sleep pressure (MEQ factor, scale points)	9.9 ± 2.5	ns	ns

Abbreviation: MEQ = morningness-eveningness questionnaire.

Note: *p < 0.05