Table 3.
Subgroup analyses of sleep parameters in men and women.
| Males | Females | P | ||||||
|---|---|---|---|---|---|---|---|---|
| Middle-Aged (n = 31) | Older Adult (n = 26) | P | Middle-Aged (n = 70) | Older Adult (n = 30) | P | Middle-Aged Males vs Females | Older Adult Males vs Females | |
| TIB | ||||||||
| PSQI, min | 363.88 (97.63) | 378.08 (87.91) | .570 | 409.72 (97.43) | 401.66 (119.60) | .725 | .032* | .410 |
| Sleep-log, min | 412.74 (84.12) | 379.42 (94.21) | .164 | 422.33 (78.50) | 433.42 (68.94) | .504 | .581 | .017* |
| Ratio (PSQI:sleep-log), % | 91.57 (30.78) | 111.67 (77.00) | .301 | 98.11 (20.09) | 92.96 (23.31) | .266 | .207 | .210 |
| TST | ||||||||
| PSQI, min | 235.65 (62.11) | 214.62 (88.87) | .299 | 261.00 (72.11) | 225.00 (72.53) | .025* | .093 | .632 |
| Actigraphy, min | 333.51 (73.50) | 304.51 (85.52) | .174 | 348.74 (61.89) | 342.83 (56.64) | .655 | .285 | .050 |
| Ratio (PSQI:actigraphy), % | 74.55 (26.58) | 77.82 (40.71) | .727 | 76.57 (21.53) | 66.39 (22.20) | .034* | .687 | .210 |
| Sleep efficiency | ||||||||
| PSQI, % | 68.17 (21.44) | 59.55 (25.66) | .173 | 66.48 (20.52) | 58.19 (18.36) | .059 | .709 | .819 |
| Actigraphy, % | 81.10 (8.59) | 79.87 (9.12) | .601 | 83.07 (7.65) | 79.57 (8.14) | .043* | .253 | .900 |
| Ratio (PSQI:actigraphy), % | 85.66 (29.45) | 76.86 (39.58) | .341 | 80.68 (26.44) | 73.44 (22.39) | .193 | .401 | .699 |
Student’s t test and Mann-Whitney U test were used for differences between means. Data are presented as mean (standard deviation). *P < .05. PSQI = Pittsburgh Sleep Quality Index, TIB = time in bed, TST = total sleep time. Sleep-log refers to the daily sleep diary accompanying actigraphy.