- The Severity and Area Score for Hidradenitis (SASH), based on body surface area (BSA) affected, is a reliable and valid outcome measurement tool for patients with hidradenitis suppurativa (HS).
Why this matters
- This new tool addresses the need for a reliable and consistent outcome measurement of affected BSA in patients with HS.
- The intraclass correlation coefficient (ICC) for intrarater reliability was 0.98 (95% CI, 0.94-1.00).
- The ICC for interrater reliability was 0.60 (95% CI, 0.44-0.74).
- Modified methods that analyzed BSA differently improved the ICC for interrater reliability to 0.75 (95% CI, 0.62-0.85) or 0.76 (95% CI, 0.62-0.85).
- Correlations between SASH and other clinician-reported measures varied from 0.68 to 0.79.
- 0.68 (95% CI, 0.60-0.75) for Hurley stage, 0.71 (95% CI, 0.63-0.77) for abscess nodule count, 0.79 (95% CI, 0.73-0.84) for modified Sartorius.
- 10 clinicians (8 dermatologists, 2 gynecologists) contributed to concept elicitation.
- 11 clinicians (9 dermatologists, 2 gynecologists) contributed to cognitive debriefing.
- Evaluation included 10 clinicians and 23 patients.
- Funding: Agency for Healthcare Research and Quality; National Center for Advancing Translational Sciences.
- Responsiveness of tool was not established.
- Small number of providers and patients included.