Table 3.
Possible confounds and their correlation with treatment, averaged over 206 participants.
| Possible confounder | Treatment | |||
| Sleep quality | Mood | |||
| Mean (SD) | Number of P values (P<.05) | Mean (SD) | Number of P values (P<.05) | |
| Day of the week | 0.016 (0.176) | 16.0 | 0.058 (0.170) | 20.0 |
| Mean temperature (previous day) | 0.017 (0.181) | 13.0 | −0.019 (0.195) | 25.0 |
| Clear sky (previous day) | −0.006 (0.191) | 15.0 | 0.003 (0.192) | 17.0 |
| Activity (previous day) | 0.013 (0.199) | 16.0 | 0.018 (0.189) | 15.0 |
| Day type | 0.074 (0.199) | 25.0 | 0.066 (0.199) | 20.0 |
| Stress (previous day) | 0.160 (0.221) | 59.0 | 0.296 (0.233) | 110.0 |
| Energy (previous day) | 0.113 (0.228) | 44.0 | 0.220 (0.241) | 77.0 |
| Focus (previous day) | 0.131 (0.225) | 40.0 | 0.248 (0.227) | 80.0 |