Demographics and characteristics of study population
| Characteristic | n (%) |
|---|---|
| Age, years, n = 955 | |
| 16–35 | 437 (46) |
| 36–55 | 324 (34) |
| 55–75 | 144 (15) |
| ≥76 | 39 (4) |
| Missing | 11 (1) |
| Sex, n = 955 | |
| Male | 382 (40) |
| Female | 573 (60) |
| Ethnicity, n = 955 | |
| European | 605 (63) |
| Maori | 45 (5) |
| Pacific | 39 (4) |
| Chinese | 39 (4) |
| Indian | 18 (2) |
| Multiple | 41 (4) |
| Other | 133 (14) |
| Missing | 35 (4) |
| Proportion of patients on screening test reporting sleep problem, n = 955 | 388 (41) |
| Proportion of patients reporting taking some medication to assist with sleeping, n = 388 | 72 (19) |