|  | Sample N = 13000 | Responders N = 7237 | p-value | Early responder N = 4627 | Late responder N = 2610 | p-value |
---|---|---|---|---|---|---|---|
Demographic characteristic | % (N) | % (N) | Â | % (N) | % (N) | Â | |
Age | 17-19 | 48.6 (6321) | 54.7 (3956) | < 0.001 | 53.3 (2465) | 57.1 (1491) | 0.020 |
 | 20-25 | 51.4 (6679) | 45.3 (3281) |  | 46.7 (2162) | 42.9 (1119) |  |
Gender | Female | 52.4 (6811) | 57.0 (4123) | < 0.001 | 57.5 (2660) | 56.1 (1463) | 0.024 |
 | Male | 47.6 (6189) | 43.0 (3114) |  | 42.5 (1967) | 43.9 (1147) |  |
Citizenship | Aust/NZ | 79.4 (10322) | 83.8 (6065) | < 0.001 | 84.5 (3909) | 82.6 (2156) | 0.370 |
 | Non-Aust/NZ | 20.6 (2678) | 16.2 (1172) |  | 15.5 (718) | 17.4 (454) |  |