Patient characteristics
| Total | Case group | Control group | P-value | |
|---|---|---|---|---|
| Total | 192 | 144 | 48 | |
| Sex | 0.002 | |||
| Male, n (%) | 72 (37.5) | 45 (31.3) | 27 (56.3) | |
| Age | ||||
| Mean, years (± SD) | 49.7 (± 20.9) | 51.0 (± 19.2) | 37.9 (± 21.0) | <0.001 |
| Range, years | 0–92 | 5–89 | 0–92 | |
| Level of intellectual disability | 0.004 | |||
| Mild, n (%) | 19 (9.9) | 9 (6.3) | 10 (20.8) | |
| Moderate, n (%) | 41 (21.4) | 28 (19.4) | 13 (27.1) | |
| Severe, n (%) | 132 (68.8) | 107 (74.3) | 25 (52.1) | |
| Wheelchair user, n (%) | 132 (68.8) | 99 (68.8) | 33 (68.8) | 0.702 |
| Scoliosis, n (%) | 64 (33.3) | 49 (34.0) | 15 (31.3) | 1.000 |
| Inhalation medication, n (%) | 49 (25.5) | 34 (23.6) | 15 (31.3) | 0.305 |