| Mean (SD) BASDAI | P | |
|---|---|---|
| Disease duration | 0.06 | |
| 0–10 years | 3.76 (1.94) | |
| 11–20 years | 4.17 (1.92) | |
| 21+ years | 3.94 (2.28) | |
| Sex | 0.08 | |
| Male | 3.70 (2.21) | |
| Female | 4.22 (1.80) | |
| Smoking Status | 0.66 | |
| Never | 3.89 (2.15) | |
| Former | 3.84 (2.00) | |
| Current | 4.05 (1.84) | |
| BMI | <0.001 | |
| Normal | 3.03 (1.77) | |
| Overweight | 4.18 (2.12) | |
| Obese | 5.0 (1.62) | |
| Severely obese | 5.22 (1.95) | |
| HLA-B27 status | 0.37 | |
| Positive | 3.93 (2.13) | |
| Negative | 3.54 (1.71) | |
| Rheumatology frequency | <0.001 | |
| Less than twice a year | 3.35 (1.90) | |
| Twice a year | 4.21 (2.19) | |
| More than twice a year | 4.79 (1.90) | |
| Comorbidities | <0.001 | |
| 0 | 2.98 (1.78) | |
| 1–3 | 3.88 (1.92) | |
| 4+ | 5.42 (2.44) | |
| Anti-TNF | 0.07 | |
| Yes | 3.54 (1.92) | |
| No | 4.07 (2.16) | |
| Steroids | 0.01 | |
| Yes | 5.20 (2.15) | |
| No | 3.79 (2.05) | |
| DMARDss | 0.52 | |
| Yes | 4.41 (2.71) | |
| No | 3.86 (2.06) | |
| Painkillers | 0.83 | |
| Yes | 3.91 (2.37) | |
| No | 3.85 (2.04) |
* Medication options were as listed in Table 1 footnote