Hidradenitis Suppurativa Symptom Daily Diary (HSSDD) and Questionnaire (HSSQ): Psychometric Validation and Interpretation Threshold Derivation Using Phase 3 Study Data.

IF 3.5 3区 医学 Q1 DERMATOLOGY
John R Ingram, Jérémy Lambert, Valerie Ciaravino, Robert Rolleri, Ingrid Pansar, Luke Peterson, Christopher G Pelligra, Linnea Thorlacius
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引用次数: 0

Abstract

Introduction: Hidradenitis suppurativa (HS) is a chronic inflammatory disease characterised by painful skin lesions which negatively impact patients' physical and mental wellbeing. The HS Symptom Daily Diary (HSSDD) and HS Symptom Questionnaire (HSSQ) are patient-reported outcome (PRO) tools capturing patient-perceived severity of HS symptoms. Here, we report the psychometric properties of HSSDD and HSSQ along with score interpretation thresholds.

Methods: Pooled data from patients with moderate to severe HS in two phase 3 studies (BE HEARD I II) were analysed. Test-retest reliability was evaluated using intraclass correlation coefficients (ICCs). Convergent validity was assessed between the HSSDD (N = 934) and HSSQ (N = 1007) compared with relevant PROs and clinician-reported outcomes (ClinROs) at baseline and Week (Wk)16. Known-groups validity was assessed, comparing HSSDD and HSSQ scores between participant subgroups pre-defined using PRO/ClinRO measures (Patient Global Impression [PGI] of HS severity, Hurley stage, International HS Severity Score System). Responsiveness was evaluated by correlating changes from baseline to Wk16 in HSSDD and HSSQ scores with changes in PGI scales. Clinically meaningful within-patient improvement thresholds were estimated using anchor- and distribution-based analyses. Symptom/impact severity thresholds were estimated using receiver operating characteristic curve analyses.

Results: At Wk16, HSSDD and HSSQ completion rates were 70.1% and 90.2%, respectively. Test-retest reliability analyses demonstrated good score reproducibility (ICC: HSSDD: 0.80-0.86; HSSQ: 0.73-0.82). Correlations between HSSDD and HSSQ scores and other PROs/ClinROs were generally consistent with predefined hypotheses, indicating good convergent validity. HSSDD and HSSQ scores discriminated between pre-defined subgroups, confirming known-groups validity. Sixteen-wk changes from baseline in HSSDD and HSSQ scores and anchors were moderately to strongly correlated (> 0.30), establishing responsiveness. Interpretation thresholds for both HSSDD and HSSQ were estimated.

Conclusion: HSSDD and HSSQ item scores demonstrated good psychometric performance in participants with moderate to severe HS. The clinically meaningful severity thresholds defined here could be used to assess treatment efficacy.

Clinical trial registration: NCT04242446; NCT04242498.

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来源期刊
Dermatology and Therapy
Dermatology and Therapy Medicine-Dermatology
CiteScore
6.00
自引率
8.80%
发文量
187
审稿时长
6 weeks
期刊介绍: Dermatology and Therapy is an international, open access, peer-reviewed, rapid publication journal (peer review in 2 weeks, published 3–4 weeks from acceptance). The journal is dedicated to the publication of high-quality clinical (all phases), observational, real-world, and health outcomes research around the discovery, development, and use of dermatological therapies. Studies relating to diagnosis, pharmacoeconomics, public health and epidemiology, quality of life, and patient care, management, and education are also encouraged. Areas of focus include, but are not limited to all clinical aspects of dermatology, such as skin pharmacology; skin development and aging; prevention, diagnosis, and management of skin disorders and melanomas; research into dermal structures and pathology; and all areas of aesthetic dermatology, including skin maintenance, dermatological surgery, and lasers. The journal is of interest to a broad audience of pharmaceutical and healthcare professionals and publishes original research, reviews, case reports/case series, trial protocols, and short communications. Dermatology and Therapy will consider all scientifically sound research be it positive, confirmatory or negative data. Submissions are welcomed whether they relate to an International and/or a country-specific audience, something that is crucially important when researchers are trying to target more specific patient populations. This inclusive approach allows the journal to assist in the dissemination of quality research, which may be considered of insufficient interest by other journals. The journal appeals to a global audience and receives submissions from all over the world.
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