Figure 3. Multivariable ordinal logistic regression analysis of associations of change in PON1 with ACR-Max response. Model is an ordinal logistic regression for the effect of change in PON1 activity on a composite ACR 20/50/70 response (0=non-responder, 1=ACR 20 responder, 2=ACR 50 responder, 3=ACR 70 responder) adjusted for BMI, seropositivity, disease duration (not shown). PON1 values are difference in log₁₀(x) from 0 to 6 months. Units are log (U/mL). ACR, American College of Rheumatology; ARYL, arylesterase; BMI, body mass index; LAC, lactonase; LCL, lower confidence interval (5%); PON1, paraoxonase; UCL, upper confidence interval (95%).