Table 1. Association between presence of psoriatic arthritis and sociodemographic, anthropometric and lifestyle variables.
Bivariate analysis.
| Variable | PsA cases (n = 27) | Subjects without PsA (n = 4883) | p-valuea |
|---|---|---|---|
| Age | 0.061 | ||
| • 20–39 | 11.1% | 32.3% | |
| • 40–59 | 48.1% | 38.4% | |
| • 60- | 40.7% | 29.4% | |
| Sex, female | 48.1% | 54.5% | 0.512 |
| Area of Spain | 0.658 | ||
| • North | 33.3% | 28.7% | |
| • Mediterranean and Canary Islands | 33.3% | 42.0% | |
| • Center | 33.3% | 29.3% | |
| Educational level | 0.045 | ||
| • Basic | 44.4% | 37.2% | |
| • Intermediate | 40.7% | 25.9% | |
| • Higher | 14.8% | 36.9% | |
| Body mass index | 0.218 | ||
| • Normal weight (18.5 ≤BMI <25) | 25.9% | 44.6% | |
| • Underweight | 0% | 1.1% | |
| • Overweight (25 ≤ BMI < 30) | 51.9% | 39.5% | |
| • Obesity (BMI ≥30) | 22.2% | 14.8% | |
| Smoking habit | 0.450 | ||
| • Never smoker | 37.0% | 49.2% | |
| • Former smoker | 33.4% | 26.7% | |
| • Smoker | 29.6% | 24.1% | |
| Born abroad | 7.4% | 7.0% | 0.713 |
| Residence in an urban municipality | 85.2% | 77.4% | 0.335 |
aBivariate logistic regression analysis.