Table 1.
Comparison in demographic characteristics and atopic diseases between SLE cases and controls.
| Demographic Characteristics | Controls N = 6692 |
Cases N = 1673 |
cOR | 95% CI | |||
|---|---|---|---|---|---|---|---|
| N | % | N | % | ||||
| Sex | |||||||
| Female | 5524 | 82.5 | 1381 | 82.5 | 1.00 | (Reference) | |
| Male | 1168 | 17.5 | 292 | 17.5 | 1.00 | (0.87–1.15) | |
| Age, years | |||||||
| <20 | 964 | 14.4 | 241 | 14.4 | 1.00 | (Reference) | |
| 20–39 | 2596 | 38.8 | 649 | 38.8 | 1.00 | (0.85–1.18) | |
| 40–59 | 2108 | 31.5 | 527 | 31.5 | 1.00 | (0.84–1.19) | |
| ≥60 | 1024 | 15.3 | 256 | 15.3 | 1.00 | (0.82–1.22) | |
| Mean (SD) | 40.0 | (18.4) | 40.1 | (18.2) | |||
| Urbanization † | |||||||
| 1 | 2004 | 30.0 | 532 | 31.8 | 1.17 | (0.99–1.37) | |
| 2 | 1985 | 29.7 | 487 | 29.1 | 1.08 | (0.92–1.27) | |
| 3 | 1206 | 18.0 | 274 | 16.4 | 1.00 | (reference) | |
| 4 | 910 | 13.6 | 223 | 13.3 | 1.08 | (0.89–1.31) | |
| 5 | 587 | 8.77 | 157 | 9.38 | 1.18 | (0.95–1.47) | |
| Comorbidity † | |||||||
| Allergic rhinitis | 1274 | 19.0 | 441 | 26.4 | 1.52 | (1.34–1.73) *** | |
| Allergic conjunctivitis | 1613 | 24.1 | 548 | 32.8 | 1.53 | (1.37–1.72) *** | |
| Atopic dermatitis | 205 | 3.06 | 114 | 6.81 | 2.31 | (1.83–2.93) *** | |
| Asthma | 511 | 7.64 | 177 | 10.6 | 1.43 | (1.20–1.71) *** | |
Note: † Chi-square test p < 0.0001; *** p < 0.001.