| Attendances over study period, n (%)a | 1 | 2 | 3 | 4 | ≥5 |
|---|---|---|---|---|---|
| 18–24 | 65 (43.0) | 32 (21.2) | 21 (13.9) | 5 (3.3) | 28 (18.5) |
| 25–29 | 66 (38.2) | 32 (18.5) | 23 (13.3) | 17 (9.8) | 35 (20.2) |
| 30–34 | 93 (42.1) | 35 (15.8) | 28 (12.7) | 17 (7.7) | 48 (21.7) |
| 35–39 | 89 (46.6) | 44 (23.0) | 14 (7.3) | 14 (7.3) | 30 (15.7) |
| 40–44 | 61 (40.7) | 35 (23.3) | 16 (10.7) | 11 (7.3) | 27 (18.0) |
| 45–49 | 46 (50.5) | 20 (22.0) | 5 (5.5) | 3 (3.3) | 17 (18.7) |
| 50–54 | 27 (44.3) | 14 (23.0) | 6 (9.8) | 4 (6.6) | 10 (16.4) |
| 55–59 | 23 (50.0) | 5 (10.9) | 7 (15.2) | 2 (4.3) | 9 (19.6) |
| 60–64 | 12 (52.2) | 1 (4.3) | 0 (0.0) | 2 (8.7) | 8 (34.8) |
| 65–69 | 3 (33.0) | 3 (33.0) | 1 (11.0) | 0 (0.0) | 2 (22.2) |
| ≥70 | 5 (62.0) | 1 (12.5) | 1 (12.5) | 1 (12.5) | 0 (0.0) |
| Significance, Kruskal-Wallis | P = 0.5 |
aPercentages calculated from relevant age group N-value.