Table 12.
Actigraphy: descriptive statistics and comparisons between pre- and post-measurement in hours. Sleep efficiencies are displayed in percentages (N=15)
| t1, M (SD) | t2, M (SD) | t | Z | P-value | Effect size, d/r | |
|---|---|---|---|---|---|---|
| Time in bed (hours) | 8.38 (1.28) | 8.29 (1.18) | – | −3.41 | 0.773 | – |
| Sleep duration (hours) | 7.60 (1.18) | 7.91 (1.09) | −1.28 | – | 0.221 | – |
| Duration of night waking (minutes) | 46.80 (43.20) | 22.20 (17.40) | – | −1.17 | 0.244 | – |
| Sleep-onset latency (minutes) | 38.40 (47.40) | 13.80 (16.20) | – | −1.68 | 0.094a | −0.31 |
| Sleep efficiency (%) | 91.56 (7.34) | 95.52 (3.11) | – | −1.14 | 0.256 | – |
| Number of night-time awakenings | 29.13 (24.56) | 18.27 (12.63) | – | −1.29 | 0.195 | – |
Notes: Duration of night waking describes the discrepancy between time in bed and the sleep duration. Clinically significant results are displayed in bold.
a
Tendencies (P<0.10).
Abbreviations: M, mean; SD, standard deviation.