Table 2.
Results of statistical analyses †
| Outcome | Main effects | Interaction effects | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Menstrual phase Follicular vs. Luteal | Suppression status < 33% vs. ≥ 33% | Time since lights on | Menstrual phase * suppression status | Menstrual * Suppression * Time | ||||||
| F stat | p-value | F stat | p-value | F stat | p-value | F stat | p-value | F stat | p-value | |
|
| ||||||||||
| KSS sleepiness | 3.02 | .08 | 0.68 | .41 | 14.97 | <.001 | 0.19 | .67 | 3.78 | .002 |
| Reaction time | 10.45 | .002 | 12.72 | <.001 | 2.58 | .02 | 5.66 | .02 | 0.79 | .57 |
| Attentional lapses | 8.16 | .005 | 11.79 | <.001 | 21.83 | <.001 | 3.06 | .08 | 3.60 | .002 |
| Core body temp. | 14.93 | <.001 | 16.18 | <.001 | 26.94 | <.001 | 2.94 | 0.09 | 1.67 | .07 |
†
KSS = Karolinska Sleepiness Scale; Temp. = temperature.