Table 2. Estimated coefficients (P-values) of log-transformed activity counts averaged within one of the five time intervals by diagnostic subgroups adjusted for the effects of age, gender, weekend, medication and BMI.
|
Time of day
(hours) |
|||||
|---|---|---|---|---|---|
| 00:00–06:00 | 06:00–12:00 | 12:00–16:00 | 16:00–20:00 | 20:00–00:00 | |
| Covariates | |||||
| Age | −0.018 (0.00) | 0.005 (0.14) | −0.009 (0.00) | −0.011 (0.00) | −0.024 (0.00) |
| Gender | −0.292 (0.06) | 0.036 (0.76) | 0.168 (0.04) | 0.181 (0.02) | 0.12 (0.27) |
| Weekend | −0.242 (0.00) | −0.61 (0.00) | 0.017 (0.59) | −0.065 (0.01) | 0.052 (0.14) |
| Medication | −0.022 (0.92) | −0.147 (0.36) | −0.161 (0.18) | −0.156 (0.19) | 0.016 (0.91) |
| BMI | 0.033 (0.002) | −0.009 (0.21) | −0.013 (0.01) | −0.015 (0.003) | 0.005 (0.36) |
| Mood disorder subgroups | |||||
| Bipolar I | −0.043 (0.87) | −0.103 (0.61) | −0.359 (0.02) | −0.384 (0.005) | −0.51 (0.007) |
| Bipolar II | 0.276 (0.27) | −0.042 (0.81) | −0.02 (0.86) | −0.038 (0.74) | 0.213 (0.20) |
| Major depression | 0.003 (0.99) | −0.161 (0.29) | −0.139 (0.21) | −0.114 (0.28) | −0.134 (0.35) |
Abbreviation: BMI, body mass index. Bolded values indicate significant results at 95% confidence level.