Table 5.
Sleep quality at baseline examination
| Men |
Women |
|||||
|---|---|---|---|---|---|---|
| 18–39 | 40–59 | 60–79 | 18–39 | 40–59 | 60–79 | |
| n = 258 | n = 2259 | n = 2248 | n = 255 | n = 2693 | n = 2287 | |
| Diurnal preference (D-MEQ) | n = 252 | n = 2146 | n = 1886 | n = 240 | n = 2484 | n = 1789 |
| Definitive evening type | 4 (1.6) | 15 (0.7) | 0 (0.0) | 5 (2.1) | 11 (0.4) | 3 (0.2) |
| Moderate evening type | 43 (17.1) | 121 (5.6) | 22 (1.2) | 27 (11.3) | 134 (5.4) | 42 (2.3) |
| Neutral type | 157 (62.3) | 989 (46.1) | 561 (29.7) | 149 (62.1) | 1260 (50.7) | 663 (37.1) |
| Moderate morning type | 46 (18.3) | 900 (41.9) | 1072 (56.8) | 56 (23.3) | 952 (38.3) | 884 (49.4) |
| Definitive morning type | 2 (0.8) | 121 (5.6) | 231 (12.2) | 3 (1.3) | 127 (5.1) | 197 (11.0) |
| Actigraphy-based sleep duration (night–day cyclesa) | n = 57 | n = 501 | n = 604 | n = 58 | n = 709 | n = 634 |
| Short sleep duration (<6 h) | 27 (47.4) | 184 (36.7) | 144 (23.8) | 17 (29.3) | 140 (19.7) | 98 (15.5) |
| Medium sleep duration (6–8 h) | 30 (52.6) | 296 (59.1) | 382 (63.2) | 36 (62.1) | 503 (70.9) | 430 (67.8) |
| Long sleep duration (>8 h) | 0 (0.0) | 21 (4.2) | 78 (12.9) | 5 (8.6) | 66 (9.3) | 106 (16.7) |
| Actigraphy-based sleep efficiency (night–day cyclesa) | n = 57 | n = 501 | n = 604 | n = 58 | n = 709 | n = 634 |
| Low sleep efficiency (<70%) | 6 (10.5) | 65 (13.0) | 86 (14.2) | 9 (15.5) | 43 (6.1) | 40 (6.3) |
| Medium efficiency (70–85%) | 40 (70.2) | 280 (55.9) | 327 (54.1) | 38 (65.5) | 353 (49.8) | 317 (50.0) |
| High sleep efficiency (>85%) | 11 (19.3) | 156 (31.1) | 191 (31.6) | 11 (19.0) | 313 (44.1) | 277 (43.7) |
Numbers represent absolute counts and numbers in brackets represent percentages, unless otherwise specified.
a
Night–day cycles were defined as duration from individual bedtime on Day 1 and individual bedtime on Day 2 (for further details on the actigraphic assessment, see37). The analysis included all individuals with at least five evaluable night–day cycles in the 1-week actigraphy.
D-MEQ, German Morningness-Eveningness Questionnaire.