1050-P: Rates, Characteristics, and Comparison of Readmissions for Diabetic Ketoacidosis in Patients with Psoriasis in the United States: A National Population-Based Study

Introduction: Psoriasis is known to increase the risk of type 1 diabetes mellites. This study aims to compare rates and outcomes of 30-day readmissions following admissions for type 1 diabetic ketoacidosis (T1DKA) in patients with and without psoriasis in the United States.

Methods: We analyzed the 2018 National Readmission Database. We included index hospitalizations for all patients (aged≥18 years) with a principal diagnosis of T1DKA using ICD-10 codes. We further sub-stratified this group into those with and with a secondary diagnosis of psoriasis. Chi-square tests and regression analysis were used to compare 30-day readmission rates and readmission outcomes between both groups. We excluded elective and traumatic readmissions.

Results: A total of 94,461 index hospitalizations for T1DKA, that were discharged alive, were included in the analysis. 357 (0.4%) of these, had co-existing psoriasis. 15,614 (16.5%) readmissions occurred within 30 days. Readmission rates were similar between psoriasis and non-psoriasis group (15.0% vs. 16.5%, p=0.663). The psoriasis group had a similar mean hospital length of stay (3.3 days vs. 2.9 days, p=0.077) and total hospital costs ($8,435 vs. $7,231, p=0.055) compared to the non-psoriasis group. Readmissions for T1DKA in psoriasis patients was associated with a total of 1,191 hospital days and $3,014,844 in-hospital costs. T1DKA without coma was the most common reason for readmission in both groups.

Conclusion: Psoriasis patients admitted for T1DM have similar 30-day readmission rates and readmission outcomes compared to non-psoriasis patients admitted for TIDM.