Demographic characteristics and comorbidities of autoimmune connective tissue disease (ACTD) patients and controls from 2004 to 2008
| Baseline variable | ACTD cohortn=5019 | Control cohort n=25 095 | P value | After propensity score adjustment |
| No (%) | No (%) | P value | ||
| Characteristics | ||||
| Sex | ||||
| Female | 3892 (77.5) | 19 460 (77.5) | ||
| Male | 1127 (22.5) | 5635 (22.5) | ||
| Age (years) | ||||
| 18–30 | 701 (14.0) | 3505 (14.0) | ||
| 31–40 | 816 (16.3) | 4080 (16.3) | ||
| 41–50 | 1042 (20.8) | 5210 (20.8) | ||
| 51–60 | 1029 (20.5) | 5145 (20.5) | ||
| 61–70 | 765 (15.2) | 3825 (15.2) | ||
| >70 | 666 (13.3) | 3330 (13.3) | ||
| Income | <0.001 | 0.478 | ||
| dependant | 1289 (25.7) | 6523 (26.0) | ||
| 1–25 000 | 2217 (44.2) | 12 119 (48.3) | ||
| 25 001–50 000 | 1095 (21.8) | 4961 (19.8) | ||
| >50 000 | 418 (8.3) | 1492 (5.9) | ||
| Comorbid medical disorders | ||||
| Fracture | ||||
| Yes | 62 (1.2) | 284 (1.1) | 0.530 | 0.944 |
| No | 4957 (98.8) | 24 811 (98.9) | ||
| DM | ||||
| Yes | 562 (11.2) | 2965 (11.8) | 0.214 | 0.732 |
| No | 4457 (88.8) | 22 130 (88.2) | ||
| Hypertension | ||||
| Yes | 1300 (25.9) | 6287 (25.1) | 0.206 | 0.808 |
| No | 3719 (74.1) | 18 808 (74.9) | ||
| Hyperlipidaemia | <0.001 | 0.932 | ||
| Yes | 891 (17.8) | 3355 (13.4) | ||
| No | 4128 (82.2) | 21 740 (86.6) | ||
| Coronary heart disease | <0.001 | 0.899 | ||
| Yes | 660 (13.2) | 2447 (9.8) | ||
| No | 4359 (86.8) | 22 648 (90.2) | ||
| Gout | <0.001 | 0.901 | ||
| Yes | 608 (12.1) | 2278 (9.1) | ||
| No | 4411 (87.9) | 22 817 (90.9) | ||
| Thyroid | <0.001 | 0.529 | ||
| Yes | 416 (8.3) | 1158 (4.6) | ||
| No | 4603 (91.7) | 23 937 (95.4) | ||
| Parkinson’s disease | 0.849 | 0.956 | ||
| Yes | 74 (1.5) | 379 (1.5) | ||
| No | 4945 (98.5) | 24 716 (98.5) | ||