DAS28 component | CARDERA | TACIT | ||||||
---|---|---|---|---|---|---|---|---|
Model 1: DAS28 components tested individually | Model 2: DAS28 components tested in same model | Model 1: DAS28 components tested individually | Model 2: DAS28 components tested in same model | |||||
Standardised β (SE) | p Value | Standardised β (SE) | p Value | Standardised β (SE) | p Value | Standardised β (SE) | p Value | |
PCS | ||||||||
SJC | −0.45 (0.04) | <0.001 | −0.19 (0.05) | <0.001 | −0.24 (0.07) | <0.001 | −0.06 (0.08) | 0.412 |
TJC | −0.33 (0.04) | <0.001 | 0.00 (0.05) | 0.977 | −0.33 (0.07) | <0.001 | −0.08 (0.09) | 0.370 |
ESR | −0.13 (0.05) | 0.005 | −0.08 (0.04) | 0.036 | −0.02 (0.07) | 0.804 | 0.03 (0.07) | 0.676 |
PtGA | −0.57 (0.04) | <0.001 | −0.45 (0.05) | <0.001 | −0.43 (0.06) | <0.001 | −0.36 (0.08) | <0.001 |
MCS | ||||||||
SJC | −0.29 (0.04) | <0.001 | −0.12 (0.06) | 0.029 | −0.16 (0.07) | 0.024 | 0.05 (0.08) | 0.527 |
TJC | −0.13 (0.05) | 0.004 | 0.15 (0.05) | 0.003 | −0.34 (0.07) | <0.001 | −0.16 (0.09) | 0.080 |
ESR | −0.14 (0.05) | 0.004 | −0.12 (0.04) | 0.008 | −0.04 (0.07) | 0.578 | 0.00 (0.07) | 0.974 |
PtGA | −0.44 (0.04) | <0.001 | −0.43 (0.05) | <0.001 | −0.41 (0.06) | <0.001 | −0.33 (0.08) | <0.001 |
All linear regression models include age, gender, disease duration and treatment as covariates; CARDERA model includes the 24-month PCS and MCS as the response variables; TACIT model includes the 12-month PCS and MCS as the response variables; the VIFs were <2 for all explanatory variables in model 2. DAS28, disease activity score; ESR, erythrocyte sedimentation rate; MCS, mental component summary; PCS, physical component summary; PtGA, patient global assessment of disease activity; SF-36, Short-Form 36; SJC, swollen joint count; TJC, tender joint count.