Table 2. Participant characteristics.
| Age group | n (%) | ||||||
|---|---|---|---|---|---|---|---|
| All | IS>0 | DIS>0 | DMS>0 | EMA>0 | Depression>1 | ||
| Male | |||||||
| 20–29 | 63 (5) | 31 (3) | 14 (1) | 13 (1) | 17 (1) | 28 (2) | |
| 30–39 | 139 (12) | 71 (6) | 19 (2) | 54 (5) | 26 (2) | 52 (4) | |
| 40–49 | 279 (24) | 154 (13) | 39 (3) | 114 (10) | 67 (6) | 102 (9) | |
| 50–59 | 232 (20) | 158 (13) | 29 (2) | 135 (11) | 49 (4) | 90 (8) | |
| 60–64 | 99 (8) | 66 (6) | 10 (1) | 58 (5) | 19 (2) | 31 (3) | |
| Total | 812 (69) | 480 (41) | 111 (9) | 374 (32) | 178 (15) | 303 (26) | |
| Female | |||||||
| 20–29 | 58 (5) | 32 (3) | 15 (1) | 19 (2) | 9 (1) | 29 (2) | |
| 30–39 | 89 (8) | 55 (5) | 21 (2) | 41 (3) | 23 (2) | 30 (3) | |
| 40–49 | 109 (9) | 65 (5) | 17 (1) | 48 (4) | 26 (2) | 47 (4) | |
| 50–59 | 79 (7) | 55 (5) | 17 (1) | 40 (3) | 17 (1) | 37 (3) | |
| 60–64 | 37 (3) | 25 (2) | 7 (1) | 21 (2) | 7 (1) | 13 (1) | |
| Total | 372 (31) | 232 (20) | 77 (7) | 169 (14) | 82 (7) | 156 (13) | |
| Overall | 1,184 (100) | 712 (60) | 188 (16) | 543 (46) | 260 (22) | 459 (39) | |
DIS: difficulty initiating sleep; DMS: difficulty maintaining sleep; EMA: early morning awakening; IS: groval insomnia score