Survey population and Welsh population estimate (midyear 2018) comparisons
| Survey population | Welsh population | |
| n (%) | n (%) | |
| All | 1379 | 1 856 853 |
| Males | 542 (39.3) | 924 020 (49.8) |
| Females | 823 (59.7) | 932 833 (50.2) |
| Not provided | 14 (1.0) | |
| 18–29 years | 157 (11.4) | 485 909 (26.2) |
| 30–39 years | 271 (19.7) | 371 851 (20.0) |
| 40–49 years | 338 (24.5) | 375 526 (20.2) |
| 50–59 years | 416 (30.2) | 433 915 (23.4) |
| 60–64 years | 177 (12.8) | 189 652 (10.2) |
| Not provided | 20 (1.4) | |
| Quintile 1 (high deprivation) | 258 (18.7) | 371 014 (20.0) |
| Quintile 2 | 326 (23.6) | 370 637 (20.0) |
| Quintile 3 | 228 (16.5) | 384 927 (20.7) |
| Quintile 4 | 254 (18.4) | 370 242 (19.9) |
| Quintile 5 (low deprivation} | 313 (22.7) | 360 033 (19.4) |