Multivariable predictors of baseline discordance*
| Positive discordance (n=168) | Negative discordance (n=63) | |||
| OR (95% CI) | p Value | OR (95% CI) | p Value | |
| Fatigue | 1.19 (1.04 to 1.36) | 0.01 | 0.92 (0.75 to 1.13) | 0.44 |
| Pain | 1.74 (1.50 to 2.02) | <0.001 | 0.66 (0.52 to 0.83) | <0.001 |
| TJC | 0.78 (0.71 to 0.86) | <0.001 | 1.17 (1.08 to 1.26) | <0.001 |
| SJC | 0.55 (0.46 to 0.65) | <0.001 | 1.49 (1.34 to 1.67) | <0.001 |
| PHQ-9 | 1.01 (0.95 to 1.06) | 0.81 | 0.86 (0.77 to 0.96) | 0.01 |
| HAQ-DI | 1.67 (1.09 to 2.54) | 0.02 | 1.17 (0.62 to 2.20) | 0.63 |
| SF-GH | 0.98 (0.96 to 0.99) | 0.002 | 1.01 (0.98 to 1.03) | 0.55 |
*Multinomial logistic regression model with concordant group as referent; χ2(14)=499.07, p<0.001, Nagelkerke R2=0.71.
HAQ-DI, Health Assessment Questionnaire Disability Index; PHQ-9, Patient Health Questionnaire-9; SF-GH, Short Form Health Survey general health scale; SJC, swelling joint count; TJC, tenderness joint count.