Participant characteristics | Baseline cohort | Follow-up cohort | RRF (95% CI)* | ||
---|---|---|---|---|---|
n | Per cent | n | Per cent | ||
Total | 2587 | 1526 | |||
Age (yrs) | |||||
16–35 | 579 | 22.4 | 268 | 17.6 | 0.78 (0.73 to 0.84) |
36–50 | 1351 | 52.2 | 815 | 53.4 | 1.02 (0.99 to 1.05) |
51+ | 657 | 25.4 | 443 | 29.0 | 1.14 (1.09 to 1.20) |
Gender | |||||
Male | 1871 | 72.3 | 1109 | 72.7 | 1.00 (0.98 to 1.02) |
Female | 716 | 27.7 | 417 | 27.3 | 0.99 (0.94 to 1.04) |
Ethnicity | |||||
Ma¯ori | 104 | 4.0 | 47 | 3.1 | 0.77 (0.61 to 0.92) |
Non-Ma¯ori | 2483 | 96.0 | 1479 | 96.9 | 1.01 (1.00 to 1.02) |
Education | |||||
High school (secondary) or less | 534 | 20.6 | 278 | 18.2 | 0.88 (0.82 to 0.95) |
Polytechnic | 654 | 25.3 | 368 | 24.1 | 0.95 (0.90 to 1.01) |
University | 1393 | 53.8 | 876 | 57.4 | 1.07 (1.04 to 1.10) |
Missing | 6 | 0.2 | 4 | 0.3 | |
Body Mass Index | |||||
<25 | 1359 | 52.5 | 824 | 54.0 | 1.03 (1.00 to 1.06) |
25–30 | 999 | 38.6 | 582 | 38.1 | 0.99 (0.95 to 1.03) |
30+ | 214 | 8.3 | 111 | 7.3 | 0.88 (0.77 to 0.99) |
Missing | 15 | 0.6 | 9 | 0.6 | |
Urbanicity of residence | |||||
Main urban area | 2010 | 77.7 | 1218 | 79.8 | 1.03 (1.01 to 1.04) |
Others | 541 | 20.9 | 293 | 19.2 | 0.92 (0.86 to 0.98) |
Missing | 36 | 1.4 | 15 | 1.0 | |
NZDep2006 scores† | |||||
1–3 | 1290 | 49.9 | 786 | 51.5 | 1.03 (1.00 to 1.07) |
4–7 | 918 | 35.5 | 542 | 35.5 | 1.00 (0.96 to 1.04) |
8–10 | 343 | 13.3 | 183 | 12.0 | 0.90 (0.82 to 0.99) |
Missing | 36 | 1.4 | 15 | 1.0 | |
Region of residence | |||||
Auckland | 918 | 35.5 | 557 | 36.5 | 1.03 (0.98 to 1.07) |
Wellington | 533 | 20.6 | 326 | 21.4 | 1.04 (0.97 to 1.10) |
Others | 1100 | 42.5 | 628 | 41.2 | 0.97 (0.93 to 1.01) |
Missing | 36 | 1.4 | 15 | 1.0 |
*95% bootstrap CI.
†2006 New Zealand Deprivation Index with decile 10 the most deprived neighbourhood and decile 1 the least.
RRF, ratios of relative frequencies.