Populations | Participants who were clinically diagnosed with HS with no restriction on age, sex, ethnicity or disease severity/Hurley stage, which addressed at least one of the outcomes of interest Other subgroups or secondary analyses will be also included if studies provide data to calculate the effect estimates of the outcomes of interest
| In vitro, in vivo or animal studies Studies not pertaining to HS Studies including less than 10 participants (to mitigate type II error)
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Interventions | | Studies regrading non-pharmacological, physical or surgical therapies Studies regarding imaging modalities (ie, ultrasound) Studies regarding disconnected node of treatments
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Comparators | | |
Outcomes | Primary outcomes Treatment response: change in HS symptoms score from baseline using validated measurement tools (ie, HiSCR, IHS4, MSS, HS-PGA, SAHS, AISI, SASH, HASI/HASI-R) Treatment response: proportion of clinical responders (ie, ≥50% HiSCR or IHS4 reduction from baseline) Unacceptability of treatment (all-cause discontinuation) Secondary outcomes Change in total abscess and abscess and inflammatory nodule counts from baseline Percentage change in surface area of the HS surgical site from baseline Time to new HS exacerbation Proportion of participants who required no surgery as determined by the designed surgeon Change in high-sensitivity C reactive protein from baseline Occurrence of adverse event (participant with at least one reported adverse event) Occurrence of SAE (participant with at least one reported SAE) Patient-reported HRQOL, including general, dermatology-specific and HS-specific measures Additional outcomes Symptoms burden (ie, pain, fatigue, pruritus, malodour, sleep problems, sexual dysfunction) Work impairment (ie, absenteeism, presenteeism, work productivity and/or school performance) Psychosocial aspects (ie, depressive symptoms, anxiety, distress and well-being) Treatment satisfaction Healthcare utilisation (ie, emergency/unplanned visit during follow-up and costs of care)
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Timing | | |
Setting | Experimental study: RCTs (parallel or crossover trials) Non-randomised studies (open-label, multiple-armed clinical trial, comparative effectiveness observational studies)
| Case–control, cross-sectional studies, N-of-one, case series/case reports and pharmacokinetic/pharmacodynamics studies Reports not involving primary data including narrative review, systematic review, meta-analysis, news items, consensus statement, guidelines and opinion/editorials
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