Age and sex distribution of patients and associated controls
| Snorers | SA | OHS | |
| Total/women (%) | 12 045/2833 (24) | 19 438/4304 (22) | 755/247 (33) |
| Age (years) | |||
| <20 | 1057 (9) | 1931 (10) | 5 (1) |
| 20–29 | 954 (8) | 861 (4) | 22 (3) |
| 30–39 | 2262 (19) | 2417 (12) | 76 (10) |
| 40–49 | 3171 (26) | 4201 (22) | 150 (20) |
| 50–59 | 3038 (25) | 5696 (29) | 244 (32) |
| 60–69 | 1254 (10) | 3287 (17) | 159 (21) |
| 70–79 | 275 (2) | 920 (5) | 81 (11) |
| ≥80 | 34 (0) | 125 (1) | 18 (2) |
Data are presented as n (%).
The 12 045 people who snored were matched with 48 180 control subjects; the 19 438 with sleep apnoea were matched with 77 752 control subjects; the 755 with obesity hypoventilation syndrome were matched with 3020 subjects.
OHS, obesity hypoventilation syndrome; SA, sleep apnoea.