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Correlations between MEQ Question 19 score and MEQ total score, MSFsc, build-up of sleep pressure, and dissipation of sleep pressure (factors derived from MEQ).
| r | p value | |
|---|---|---|
| MEQ, full questionnaire | 0.703 | 5.47 × 10−90 |
| MSFsc | −0.349 | 1.38 × 10−18 |
| Build-up of sleep pressure factor | 0.259 | 1.28 × 10−10 |
| Dissipation of sleep pressure factor | 0.718 | 1.43 × 10−95 |
Abbreviations: MEQ = morningness-eveningness questionnaire; MSFsc = mid-sleep time on free days corrected for sleep debt on work days.
