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Table 2 Data extraction form

From: Systematic reviews of health economic evaluations: a protocol for a systematic review of characteristics and methods applied

Article
General information
 Affiliation (e.g., academic, commercial, public)
 Country of corresponding author
 Number of authors
 Journal + impact factor
 Disease area(s) (ICD-Code[s])
 Type of intervention (e.g., drug treatment, surgical procedure)
 Scope of SR-HE (only SR-HE/SR-HE and primary CEA/SR-HE to inform primary CEA)
   If only SR-HE: indicated purpose of systematic review
 Study registered or published protocol available (not stated/stated)
 Consideration of reporting guideline (e.g., PRISMA)
Statement of research question and formulated eligibility criteria
 Research question (not stated/stated)
 Eligibility criteria (PICOS + further [specify])
 Economic study types included
Literature search strategy
 Information sources (databases, reference lists of relevant records, etc.)
 Search terms/filters
 + explanation when economic terms missing (e.g., joint review for clinical and economic effectiveness)
 Search limits (time period, language, publication type, etc.)
Study selection
 Flow of study selection described (yes/no)
 Study selection illustrated in flow chart (yes/no)
 Duplicate study selection (yes/no/unclear) + method (e.g., all independently/quality assurance of sample) + mechanism to resolve disagreement
 Technical support for study selection (e.g., software)
Data extraction
 Data extraction method (e.g., standardized data extraction form)
 Duplicate data extraction (yes/no/unclear) + method (e.g., all independently/quality assurance of sample) + mechanism to resolve disagreement
 Data items extracted
 Technical support for data extraction (e.g., software)
Assessment of methodological study quality
 Assessment of methodological study quality on study level (yes/no/unclear) + assessment tool
 Duplicate quality assessment (yes/no/unclear) + method (e.g., all independently/quality assurance of sample) + mechanism to resolve disagreement
Assessment of generalizability/transferability/applicability
 Assessment of generalizability/transferability/applicability (yes/no/unclear) + assessment tool
 Duplicate generalizability/transferability/applicability assessment (yes/no/unclear) + method (e.g., all independently/quality assurance of sample) + mechanism to resolve disagreement
Presentation of cost data
 Presentation of cost data (as reported/inflated/currency converted)
Method for data synthesis
 Data synthesis
 Further remarks
  1. CEA cost-effectiveness analysis; PICOS patient, intervention, comparison, outcome, setting; PRISMA Preferred Reporting Items for Systematic review and Meta-Analysis; SR-HE systematic review of health economic evaluations