Comparison between patients reporting current flare (n = 117) and patients reporting no current flare (n = 117). OR expressed for each 2-point increase for BASDAI, BASFI, and ASQoL, and for 5-year increase for time since AS onset.
| Characteristics | Univariate Analysis, p† | Multivariate Analysis‡ | |
|---|---|---|---|
| p | OR (95% CI) | ||
| Male | 0.09 | 0.17 | 0.58 (0.26–1.25) |
| Education, high school or less | < 0.01 | 0.59 | 1.23 (0.58–2.64) |
| Time since AS onset, decrease of 5 yrs | 0.05 | 0.04 | 1.19 (1.15–1.22) |
| Anti-TNF, no intake of anti-TNF | < 0.01 | 0.03 | 7.14 (1.47–50.00) |
| BASDAI, increase of 2 points | < 0.01 | 0.01 | 2.01 (1.53–2.65) |
| BASFI, increase of 2 points | < 0.01 | 0.96 | 0.99 (0.78–1.25) |
| ASQoL, increase of 2 points | < 0.01 | 0.004 | 1.37 (1.23–1.52) |
↵† Student t test or chi-square test as appropriate.
↵‡ Logistic regression. P value < 0.05 are in bold face. BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; BASFI: Bath Ankylosing Spondylitis Functional Index; ASQoL: AS Quality of Life; AS: ankylosing spondylitis; anti-TNF: antitumor necrosis factor.