Supplementary Material for: Low Utilization of the Dermatology Ambulatory Encounter among Patients with Hidradenitis Suppurativa: A Population-Based Retrospective Cohort Analysis in the USA

2017-09-27T10:53:32Z (GMT) by Garg A. Lavian J. Strunk A.
<p><b><i>Background:</i></b> There are limited data evaluating the utilization of dermatologists for the care of patients with hidradenitis suppurativa. <b><i>Objective:</i></b> To determine the utilization of the dermatology ambulatory encounter among hidradenitis suppurativa patients, and to evaluate whether utilization varies by insurance status. <b><i>Methods:</i></b> This was a retrospective cohort analysis in an adult population sample of 42,030 hidradenitis suppurativa patients with either private or public health insurance who were identified by a validated scheme using SNOMED-CT terminology. The primary outcome was a dichotomous variable defined as having at least 1 ambulatory encounter with a dermatologist over a 3-year period. <b><i>Results:</i></b> Overall, 21.8% (9,170/42,020) of the hidradenitis suppurativa patients had at least 1 ambulatory encounter with a dermatologist. This proportion did not significantly vary between patients with private insurance (22%), Medicaid (21.6%), and Medicare (21.7%). <b><i>Conclusion:</i></b> Utilization of the ambulatory dermatology encounter among patients with hidradenitis suppurativa is low in the USA. Factors other than insurance status influence this level of utilization.</p>