Risk factors for radiographic progression in psoriatic arthritis: subanalysis of the randomized controlled trial ADEPT

Table 3 Multivariate analysis of predictors for radiographic progression

Variable	OR	95% CI	Pvalue
Treatment with adalimumab^a	0.21	0.10, 0.42	< 0.001
CRP (continuous)	1.16	1.01, 1.33	0.040
CRP > 0.287 mg/dl^a	4.31	1.42, 13.09	0.010
CRP (1.0 mg/dl^a	3.28	1.66, 6.51	< 0.001
CRP (2.0 mg/dl^a	2.29	1.12, 4.69	0.023
Modified total Sharp score	1.01	1.00, 1.02	0.002

CI, confidence interval; CRP, C-reactive protein; OR, odds ratio. Separate multivariate analyses were performed for CRP (continuous), CRP > 0.287 mg/dl, CRP ≥1.0 mg/dl and CRP ≥2.0 mg/dl. For non-CRP variables, results are from the analysis with CRP > 0.287 mg/dl. All multivariate analyses also included baseline age, rheumatoid factor (yes/no), tender joint count, swollen joint count, and methotrexate use (yes/no) as variables; P > 0.05 for each. ^aDichotomous variables - those without a footnote annotation are continuous variables.

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