Table 5. Correlation between morningness-eveningness, and sleep quality questionnaires vs. PLR.
| PLR correlation | ||||
|---|---|---|---|---|
| Questionnaire | PLR parameter | Wavelength (nm) | R | p |
| H-O | *AUC240 | 420 | -0.771 | 0.005 |
| AUC240 | 440 | -0.638 | 0.035 | |
| AUC60 | 460 | -0.666 | 0.018 | |
| AUC240 | 460 | -0.619 | 0.032 | |
| *AUC300 | 460 | -0.747 | 0.005 | |
| *AUC240 | 470 | -0.757 | 0.007 | |
| AUC300 | 470 | -0.657 | 0.028 | |
| AUC60 | 490 | -0.592 | 0.055 | |
| Min | 480 | 0.671 | 0.017 | |
| AUC240 | 450 | 0.697 | 0.017 | |
| PSQI | AUC300 | 450 | 0.619 | 0.042 |
| AUC60 | 460 | 0.626 | 0.029 | |
H-O, Horne-Östberg Morningness-Eveningness score; PSQI, Pittsburgh Sleep Quality Index; Min, minimum diameter (expressed as pupil constriction); AUC60, AUC240, AUC300, Area Under the Curve during the first minute (0–60 seconds), last minute (240–300 seconds) of light exposure and the minute after light offset (300–360 seconds), respectively.
* indicates statistical significance after Bonferroni correction.