Table 1 Patient demographics and social characteristics
Characteristics | Overall | Non-bDMARDs n = 87 | bDMARDs n = 123 | p-value |
|---|---|---|---|---|
Sex, n (%) | N = 210 | |||
 Male | 49 (23.3) | 23 (26.4) | 26 (21.1) | 0.372 |
 Female | 161 (76.7) | 64 (73.6) | 97 (78.9) |  |
Age, (years) | N = 210 | |||
 Mean ± SD | 59.1 ± 12.6 | 60.38 ± 13.05 | 57.32 ± 12.21 | 0.083 |
 IQR | 51.8–67.8 | 55.0–68.0 | 49.0–67.0 |  |
Weight, (kg) | N = 187 | |||
 Mean ± SD | 76.0 ± 14.8 | NA | NA |  |
 IQR | 65.0–85.0 |  |  |  |
BMI, (k/m2) | N = 174 | |||
 Mean ± SD | 28.1 ± 4.6 | 28.37 ± 4.39 | 27.92 ± 4.82 | 0.534 |
 IQR | 24.9–30.5 | 25.5–31.2 | 24.7–30.3 |  |
Education, n (%) | N = 210 | |||
 No education | 2 (1.0) | NA | NA |  |
 Primary | 113 (53.8) |  |  |  |
 Secondary | 63 (30.0) |  |  |  |
 Higher | 32 (15.2) |  |  |  |
Smoker, n (%) | N = 210 | |||
 Never smoked | 147 (70.0) | 61 (70.1) | 86 (69.9) | 0.848 |
 Ex-smoker | 32 (15.2) | 15 (17.2) | 17 (13.8) |  |
 Time since stopped (years), Mean ± SD (n) | 9.9 ± 10.5 (30) |  |  |  |
 Packs/year, Mean ± SD (n) | 30.1 ± 40.8 (25) |  |  |  |
 Smoker | 31 (15) | 11 (12.6) | 20 (16.3) |  |
 Packs/year, Mean ± SD (n) | 18.7 ± 14.1 (28) |  |  |  |
Patient diagnosed for the first time | N = 210 | |||
 No, n (%) | 208 (99.0) | 85 (97.7) | 123 (100) | 0.092 |
  Time from first diagnosis (years), median (IQR) | 11.9 (5.0–16.0) | 10.0 | 11.0 |  |
 Yes, n (%) | 2 (1.0) | 2 (2.3) | 0 (0) | 0.469 |
  Duration of symptoms (months), median (IQR) | 5.5 (4.0–7.0) |  |  |  |