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. 2015 Apr 24;67(5):708–717. doi: 10.1002/acr.22492

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© 2015 The Authors. Arthritis Care & Research is published by Wiley Periodicals, Inc. on behalf of the American College of Rheumatology.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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All‐cause health care costs in moderate‐to‐severe PsO+PsA patients and matched controls during the 12‐month study period (univariate and multivariate analyses). Adjusted mean costs were estimated from 2‐part regression models adjusting for age, sex, geographic region, index year, insurance type, and modified Charlson Comorbidity Index calculated based on non–PsO/PsA‐related comorbidities. All P < 0.05 for the comparison of unadjusted and adjusted mean costs between PsO+PsA patients and controls. All costs were adjusted to 2012 US dollars using the medical care component of the consumer price index. PsO = psoriasis; PsA = psoriatic arthritis.