Univariate analyses of demographic variables, medical variables, and psychological variables in relation to BASDAI.
| Predictors | ß Weights | 95% CI | p |
|---|---|---|---|
| Age | 0.05 | −0.07 to 0.17 | 0.391 |
| Education | −0.17 | −0.28 to −0.05 | < 0.001 |
| Sex (male) | −0.18 | −0.29 to −0.06 | < 0.001 |
| Ethnicity (white) | −0.08 | −0.20 to 0.03 | 0.157 |
| Employment (yes) | −0.19 | −0.31 to −0.08 | < 0.001 |
| Student (yes) | 0.01 | −0.10 to 0.13 | 0.820 |
| Smoking (yes) | 0.14 | 0.03 to 0.26 | 0.015 |
| Married (yes) | −0.01 | −0.13 to 0.11 | 0.825 |
| No. medical comorbidities | 0.08 | −0.04 to 0.19 | 0.200 |
| NSAID use | 0.21 | 0.09 to 0.32 | < 0.001 |
| Biologic use | −0.08 | −0.20 to 0.03 | 0.160 |
| C-reactive protein | 0.11 | −0.004 to 0.23 | 0.060 |
| Disease duration | 0.03 | −0.08 to 0.15 | 0.578 |
| Bath AS Radiographic Index | 0.005 | −0.13 to 0.14 | 0.965 |
| Resilience coping | −0.11 | –0.22 to 0.01 | 0.068 |
| Arthritis internality | −0.36 | −0.47 to −0.26 | < 0.001 |
| Arthritis helplessness | 0.53 | 0.43 to 0.62 | < 0.001 |
| Depression (PHQ-9) | 0.58 | 0.48 to 0.67 | < 0.001 |
| Active coping | −0.06 | −0.18 to 0.06 | 0.552 |
| Passive coping | 0.47 | 0.36 to 0.57 | < 0.001 |
BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; NSAID: nonsteroidal antiinflammatory frug; PHQ: Patient Health Questionnaire.