Table 2.
Sleep and rest–activity cycle parameters for fatigued and non-fatigued cancer survivors.
| Fatigued (n = 51) | Non-Fatigued (n = 36) | |||||
|---|---|---|---|---|---|---|
| Outcome | Mean | SD | Mean | SD | P (q) | Effect Size |
| Sleep (Actigraphy) | ||||||
| Total Sleep Time (min) | 422.6 | 44.9 | 417.9 | 46.3 | 0.632 (0.100) | 0.10 |
| Sleep Efficiency (%) | 84.1 | 4.7 | 85.3 | 5.3 | 0.285 (0.071) | 0.23 |
| Sleep Onset Latency (min) np | 17.3 | 13.1 | 12.9 | 11.9 | 0.053 a (0.064) | 0.35 |
| Wake After Sleep Onset (min) | 61.2 | 22.4 | 52.9 | 15.7 | 0.046 a (0.057) | 0.43 |
| Fragmentation Index | 29.5 | 9.4 | 27.5 | 8.9 | 0.305 (0.086) | 0.23 |
| Perceptions of Sleep | ||||||
| Insomnia Severity Index | 12.7 | 5.6 | 8.0 | 5.6 | 0.020 a (0.043) | 0.84 |
| Rest–activity Cycle | ||||||
| Relative amplitude np | 0.88 | 0.07 | 0.91 | 0.05 | 0.017 a (0.029) | 0.58 |
| Bed times | 23 h 21 | 0 h 57 | 22 h 55 | 00 h 48 | 0.033 a (0.05) | 0.48 |
| Wake up times | 7 h 40 | 01 h 07 | 6 h 59 | 01 h 11 | 0.009 a (0.021) | 0.58 |
| Peak Time (hh:mm) | 14 h 40 | 01 h 14 | 14 h 00 | 00 h 53 | 0.007 a (0.007) | 0.62 |
| Mean Sleep Actigraphy (MW8 counts) np | 15.6 | 6.9 | 12.8 | 6.5 | 0.018 a (0.036) | 0.42 |
| Mean Wake Actigraphy (MW8 counts) | 101.3 | 33.6 | 109.6 | 37.0 | 0.289 (0.079) | 0.23 |
| Index of Activity during Wake (%) | 68.9 | 9.3 | 70.8 | 10.0 | 0.364 (0.093) | 0.20 |
| Index of Activity during Sleep (%) | 14.3 | 3.8 | 12.8 | 3.7 | 0.008 a (0.014) | 0.60 |
a indicates p values which are significant using the Benjamini–Hochberg procedure with a false discovery rate of Q = 0.1. np indicates a non-parametric Mann–Whitney test.