{"doi":"10.1111/bjd.19344","title":"Validation of global item for assessing impact on quality of life of patients with hidradenitis suppurativa*","abstract":"BACKGROUND: Hidradenitis suppurativa (HS) is a chronic inflammatory disease. The HS core outcome set calls for a patient global assessment (PtGA). OBJECTIVES: To assess the validity, reliability and responsiveness of a candidate single-item PtGA for HS-specific health-related quality of life (HRQoL). METHODS: Cognitive debriefing interviews were conducted with patients with HS in Denmark and the USA. A cross-sectional observational study was done with adults with HS in the USA and Denmark. Candidate PtGA item, demographic items and multiple patient-reported scales - the Hidradenitis Suppurativa Quality of Life (HiSQOL), Dermatology Life Quality Index (DLQI) and numerical rating scale (NRS) for pain - were concurrently administered to evaluate convergent and known-groups validity. Scales with a single-item assessment of change were readministered 24-72 h later, to evaluate reliability and responsiveness. RESULTS: After cognitive debriefing, the candidate PtGA for HS-specific HRQoL was finalized with five response levels. Convergent validity of the PtGA was supported by significant correlations with HiSQOL score [r = 0·79, 95% confidence interval (CI) 0·75-0·82] and DLQI (r = 0·78, 95% CI 0·74-0·82). The PtGA displayed known-groups validity with DLQI score bands based on significance of an anova (P < 0·001). Good test-retest reliability was supported by the intraclass correlation coefficient (0·82, 95% CI 0·78-0·85) for those who reported stable HS. Responsiveness was assessed by differences in PtGA score against a patient-reported assessment of change, which showed significant differences towards improvement. CONCLUSIONS: The single-item PtGA exhibits reliability, validity and responsiveness in assessing HS-specific HRQoL in HS, making it a good provisional tool for HS clinical research.","journal":"British Journal of Dermatology","year":2020,"id":75748,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":23,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.8829,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":395442,"name":"Brittainy Hereford","orcid":"0000-0002-6568-7689","position":1,"is_corresponding":false},{"id":395443,"name":"Linnea Thorlacius","orcid":"0000-0002-3734-9607","position":2,"is_corresponding":false},{"id":395444,"name":"Bente Villumsen","orcid":"0000-0002-5176-2166","position":3,"is_corresponding":false},{"id":395445,"name":"John R Ingram","orcid":"0000-0002-5257-1142","position":4,"is_corresponding":false},{"id":395446,"name":"Amit Garg","orcid":"0000-0003-0886-6856","position":5,"is_corresponding":false},{"id":395447,"name":"Melissa Butt","orcid":"0000-0002-5860-1074","position":6,"is_corresponding":false},{"id":396441,"name":"Solveig Esmann","orcid":null,"position":7,"is_corresponding":false},{"id":395448,"name":"Tonya S. King","orcid":"0000-0003-4989-5653","position":8,"is_corresponding":false},{"id":395449,"name":"Jerry Tan","orcid":"0000-0002-9624-4530","position":9,"is_corresponding":false},{"id":395450,"name":"Gregor B. E. Jemec","orcid":"0000-0002-0712-2540","position":10,"is_corresponding":false},{"id":395441,"name":"Joslyn S. Kirby","orcid":"0000-0002-6741-3796","position":0,"is_corresponding":true}],"reference_count":22,"raw_metadata":null,"created_at":"2026-07-18T21:46:55.856612Z","pmid":"32602129","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}