Table 1.
Participant demographic information by genotype.
| Demographic | Val/Val (M ± SD) | Val/Met (M ± SD) | t (df) | p |
|---|---|---|---|---|
| n | 18 | 12 | – | – |
| Age | 22.89 ± 5.18 | 23.17 ± 4.22 | 0.16 (28) | 0.878 |
| Sex males n(%) | 10 (55.56%) | 8 (66.67%) | – | 0.709a |
| Wake time | 08.05 ± 0.86 | 8.11 ± 0.80 | 0.20 (28) | 0.847 |
| DLMO | 18.81 ± 1.92 | 20.03 ± 3.18 | 1.28 (27) | 0.212 |
| DLMO shift (h) | 2.95 ± 1.43 | 2.23 ± 2.06 | 1.11 (27) | 0.277 |
| TST (mins) | 388.22 ± 68.92 | 408.70 ± 67.35 | 0.76 (26) | 0.455 |
| SE (%) | 80.77 ± 14.46 | 85.05 ± 13.97 | 0.76 (26) | 0.455 |
| WASO (mins) | 65.08 ± 73.79 | 56.91 ± 66.62 | 0.29 (26) | 0.774 |
Dim light melatonin onset (DLMO); total sleep time (TST); sleep efficiency (SE); wake after sleep onset (WASO). Wake time refers to wake time before the 8-h phase advance and DLMO refers to DLMO assessed during the CR post phase shift.
a
Fisher’s exact test p-value (2-sided).