Table 3 Sleeping problems and health status stated by the pilots from the two different ROS
|  | Total sample (n = 401) | 1-week ROS (n = 49) | 4-month ROS (n = 352) | p |
|---|---|---|---|---|
Sleeping disorders, n (%) | ||||
 No | 128 (31.9%) | 18 (36.7%) | 110 (31.3%) | 0.4402 |
 Yes | 273 (68.1%) | 31 (63.3%) | 242 (68.7%) | |
 Difficulty in falling asleep | 42 (10.5%) | 3 (6.1%) | 39 (11.1%) |  |
 Wake up at least once a night | 172 (42.9%) | 19 (38.8%) | 153 (43.5%) |  |
 Lie awake several times a night | 59 (14.7%) | 9 (19.4%) | 50 (14.2%) |  |
Daytime sleepiness according to Epworth Sleepiness Scale | ||||
 Point value, (SD) | 8.8 (4.0) | 8.1 (3.8) | 8.9 (4.0) | 0.2071 |
 Point value > 11, n (%) | 168 (41.9%) | 16 (32.7%) | 152 (43.2%) | 0.1622 |
Most common current diseases or injuries (physician’s diagnosis), n (%)3 | ||||
 Musculoskeletal disease in back, limbs or other part of the body | 137 (34.2%) | 20 (40.8%) | 117 (33.2%) | 0.2052 |
 Cardiovascular disease | 101 (25.2%) | 7 (14.3%) | 94 (26.7%) | 0.0982 |
 Injury due to an accident | 73 (18.2%) | 9 (18.4%) | 64 (18.2%) | 0.2802 |
 Endocrine or metabolic disease | 43 (10.7%) | 4 (8.2%) | 39 (11.1%) | 0.4192 |
 Neurological or sensory disease | 42 (10.5%) | 0 | 42 (11.9%) | 0.0382 |
 Mental disorder | 22 (5.5%) | 1 (2.0%) | 21 (6.0%) | 0.0792 |
Work impairment due to these diseases (subjective assessment), n (%)3 | 0.7122 | |||
 No hindrance/ no diseases | 267 (66.6%) | 29 (59.2%) | 238 (67.6%) |  |
 Ability to do the job, but it causes some symptoms | 109 (27.2%) | 17 (34.7%) | 92 (26.0%) |  |
 Sometimes slow down the work pace or change the work methods | 18 (4.5%) | 3 (6.1%) | 15 (4.3%) |  |
 Often slow down the work pace or change the work methods | 3 (0.7%) | 0 | 3 (0.9%) |  |
 Feel able to do only part-time work | 1 (0.3%) | 0 | 1 (0.3%) |  |
 Entirely unable to work | 3 (0.7%) | 0 | 3 (0.9%) |  |