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Table 3 Risk of bias assessment of retrospective cohort studies

From: Human-derived acellular dermal matrix may be an alternative to autologous grafts in tympanic membrane reconstruction: systematic review and meta-analysis

stduy Selection Comparability Outcome
Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 Item 8
Benecke 2001 [8]    
Min 2018 [26]
Vos 2005 [27]   
Yang 2019 [28]
Fu 2017 [29]
  1. Item 1: Representativeness of the exposed cohort
  2. Item 2: Selection of the non - exposed cohort
  3. Item 3: Ascertainment of exposure
  4. Item 4: Demonstration that outcome of interest was not present at start of study
  5. Item 5: Comparability of cohorts on the basis of the design or analysis
  6. Item 6: Assessment of outcome
  7. Item 7: Was follow-up long enough for outcomes to occur
  8. Item 8: Adequacy of follow up of cohorts