LAUSR

INTRODUCTION Previous studies showed a large inpatient burden of psoriasis in the US. Less is known about the hospital readmission for psoriasis. OBJECTIVES To determine the patterns and predictors of hospital readmission rates for psoriasis. METHODS We analyzed data from the 2012-2014 Nationwide Readmissions Database, a representative sample of hospital readmissions in the US. RESULTS Among 2,606 admissions for psoriasis, 216 had ≥1 readmissions for psoriasis (prevalence [95% CI]: 8.3% [6.6-10.0%]) and 918 for all-causes (35.2% [32.2-38.3%]). The mean annual cost of first readmission for any reason was $3,500,141, with $8,357,961 for subsequent readmissions. In multivariable regression models, readmission for psoriasis was associated with ≥6 day-long index hospitalization (adjusted hazard ratio [95% CI]: 1.82 [1.06-3.12]), teaching hospital (1.93 [1.13-3.31]), comorbid skin infection (2.13 [1.11-4.08]), hospitalization in the autumn (4.51 [2.54-8.00]), but inversely associated with other infections (0.49 [0.26-0.92]). Readmissions for psoriasis increased from 2012 to 2014 (1.93 [1.26-2.93]). LIMITATIONS No data on psoriasis characteristics. CONCLUSIONS Inpatients with psoriasis had high rates of readmission overall, but low rates of readmission for psoriasis per se. A subset of psoriasis patients was hospitalized repeatedly and responsible for most inpatients costs. Future interventions are needed to lower readmission rates among psoriasis patients.