Characteristics of study participants
| Men (n=207) | Women (n=337) | Total (n=544) | |
| Age (mean (SD)) | 41.8 (15.6) | 41.9 (14.2) | 41.9 (14.7) |
| Age group (n (%)) | |||
| 18–24 | 35 (16.9) | 40 (11.9) | 75 (13.8) |
| 25–34 | 40 (19.3) | 81 (24.0) | 121 (22.2) |
| 35–44 | 45 (21.7) | 72 (21.4) | 117 (21.5) |
| 45–54 | 40 (19.3) | 72 (21.4) | 112 (20.6) |
| 55–64 | 25 (12.1) | 46 (13.6) | 71 (13.1) |
| 65+ | 22 (10.6) | 26 (7.7) | 48 (8.8) |
| Indigenous status (n (%)) | |||
| Aboriginal | 195 (94.2) | 324 (96.1) | 519 (95.4) |
| Torres Strait Islander | 5 (2.4) | 3 (0.9) | 8 (1.5) |
| Aboriginal and Torres Strait Islander | 7 (3.4) | 10 (3.0) | 17 (3.1) |
| Recruitment location (n (%)) | |||
| Aboriginal Medical Services | 168 (81.2) | 252 (74.8) | 420 (77.2) |
| Community | 39 (18.8) | 85 (25.2) | 124 (22.8) |
| Reserves | 25 (12.1) | 45 (13.4) | 70 (12.9) |
| Regional distribution | |||
| ASGC-RA 1: Major Cities | 34 (16.4) | 49 (14.5) | 83 (15.3) |
| ASGC-RA 2: Inner Regional | 121 (58.5) | 185 (54.9) | 306 (56.3) |
| ASGC-RA 3: Outer Regional | 45 (21.7) | 85 (25.2) | 130 (23.9) |
| ASGC-RA 4: Remote | 6 (2.9) | 16 (4.7) | 22 (4.0) |
| ASGC-RA 5: Very Remote | 1 (0.5) | 2 (0.6) | 3 (0.6) |
ASGC-RA, Australian Standard Geographical Classification—Remoteness Areas.