Social history comparing cases and controls
| Variable | Cases (%) | Controls (%) | p Value |
|---|---|---|---|
| *Pearson χ2 test. | |||
| **Fisher's exact test. | |||
| Age (n=1481) | |||
| 15–19 | 65/740 (8.8%) | 14/741 (1.9%) | |
| 20–24 | 246/740 (33.2%) | 140/741 (18.9%) | |
| 25–29 | 229/740 (30.9%) | 210/741 (28.3%) | |
| 30–34 | 119/740 (16.1%) | 162/741 (21.9%) | <0.001* |
| 35–39 | 46/740 (6.2%) | 109/741 (14.7%) | |
| >39 | 35/740 (4.7%) | 106/741 (14.3%) | |
| Country of birth (n=1445) | |||
| Australia and NZ | 307/727 (42.2%) | 475/718 (66.2%) | |
| Polynesia and Melanesia | 10/727 (1.4%) | 7/718 (1.0%) | |
| Europe and UK | 70/727 (9.6%) | 114/718 (15.9%) | |
| N and SE Asia | 304/727 (41.8%) | 84/718 (11.7%) | |
| Central Asia | 2/727 (0.3%) | 4/718 (0.6%) | <0.001* |
| Middle East | 3/727 (0.4%) | 4/718 (0.6%) | |
| S America | 17/727 (2.3%) | 10/718 (1.4%) | |
| N America | 6/727 (0.8%) | 15/718 (2.1%) | |
| Africa | 8/727 (1.1%) | 5/718 (0.7%) | |
| English spoken at home (n=1453) | 435/725 (60.0%) | 644/728 (88.5%) | <0.001** |
| Cigarette smoker (n=1458) | 338/735 (46.0%) | 262/723 (36.2%) | <0.001** |
| Alcohol consumption >140 g/week (n=1456) | 46/735 (6.3%) | 50/721 (6.9%) | 0.673** |