Table 2.
Estimates of parameters for the 64-min active morning and evening periods according to phase of bipolar disorder, adjusted for multiple comparisons, and controlling for age and gender
| Activity parameter | Phase of illness | Morning period | Evening period | ||||
|---|---|---|---|---|---|---|---|
| Mean | 95% CI | Mean | 95% CI | ||||
| Mean activity count per minute | Bipolar depression | 218.53 | 132.02 | 305.04 | 154.86 | 95.98 | 213.75 |
| Mania | 229.80 | 154.24 | 305.37 | 239.34 | 187.91 | 290.78 | |
| Mixed state | 281.72 | 164.41 | 399.02 | 254.49 | 174.65 | 334.33 | |
| SD in % of mean activity count | Bipolar depression | 117.42 | 98.88 | 135.96 | 129.48 | 104.58 | 154.37 |
| Mania | 90.04 | 73.84 | 106.24 | 92.11 | 70.36 | 113.85 | |
| Mixed state | 85.68 | 60.54 | 110.83 | 111.13 | 77.38 | 144.88 | |
| RMSSD in % of mean activity | Bipolar depression | 108.12 | 85.20 | 131.05 | 124.81 | 96.79 | 152.84 |
| Mania | 88.75 | 68.72 | 108.78 | 90.75 | 66.26 | 115.23 | |
| Mixed state | 84.71 | 53.62 | 115.80 | 97.61 | 59.61 | 135.61 | |
| Autocorrelation | Bipolar depression | .56 | .46 | .67 | .53 | .43 | .62 |
| Mania | .49 | .40 | .58 | .49 | .40 | .58 | |
| Mixed state | .51 | .37 | .65 | .60 | .47 | .74 | |
| Sample entropy | Bipolar depression | 1.05 | .70 | 1.40 | 1.03 | .65 | 1.41 |
| Mania | 1.41 | 1.11 | 1.72 | 1.36 | 1.03 | 1.69 | |
| Mixed state | 1.55 | 1.08 | 2.03 | .96 | .44 | 1.47 | |
| Fourier analysis (2–8 min/8–64 min) | Bipolar depression | .67 | .38 | .96 | .77 | .41 | 1.14 |
| Mania | .90 | .64 | 1.15 | 1.05 | .73 | 1.37 | |
| Mixed state | .97 | .58 | 1.37 | .58 | .08 | 1.07 | |