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Table 1 Results from quality assessment of all included papers (n = 10) on the EAI

From: Self-reported social and activity restrictions accompany local impairments in posterior tibial tendon dysfunction: a systematic review

  Reference Kulig 26 Rabbito 28 Neville 22 Houck 24 Chimenti 25 Neville 23 Kulig 32 Houck 30 Tome 31 Houck 29 Studies scoring “yes” (%)
Q1. Hypothesis/aim/ objective clearly described 1 1 1 1 1 1 1 1 1 1 100
Q2. Main outcomes clearly described 1 1 1 1 1 1 1 1 1 1 100
Q3. Reported study design 1 1 0.5 0.5 1 1 1 1 1 1 80
Q4. Source of participant population clearly described 1 1 0 0 0 0 0.5 0 0 0 20
Q5. Reported eligibility criteria 1 1 1 1 1 1 1 1 1 1 100
Q6. Characteristics of study participants described 1 1 1 1 1 1 1 1 1 1 100
Q7. Important covariates and confounders described 1 1 1 1 1 1 1 1 1 1 100
Q8. Statistical methods clearly described 1 1 1 1 1 1 1 1 1 1 100
Q9. Main findings of the study clearly described 1 1 1 1 1 1 1 1 1 1 100
Q10. Provides estimates of the random variability in the data 1 1 1 1 1 1 1 1 1 1 100
Q11. Sample size calculations 1 1 0 0.5 0.5 0 0 0 0 0 20
Q12. Comparability of case/control groups 0 1 1 1 1 0 0 0 0 0 40
Q13. Recruitment period for case/control groups 0 0 0 0 0 0 0 0 0 0 0
Q14. Blinding of assessors 0 0 0 0 0 0 0 0 0 0 0
Q15. Reliability of outcome measures 1 0.5 1 1 0 0.5 0 0.5 0.5 0 30
Q16. Validity of outcome measures 1 0 0 0 0 0 0 0 0 0 10
Q17. Standardised assessment 1 1 1 1 1 1 1 1 1 1 100
Q18. Assessment period of case/control groups 0 0 0 0 0 0 0 0 0 0 0
Q19. History of disease/symptoms collected and included in analysis 0 0 0.5 0 0 0 0 0 0 0 0
Q20. Adjusted for covariates 1 1 1 1 0.5 1 1 1 1 1 90
Q21. Reported data for subgroups 0 0 1 0 0 1 0 0 0 0 20
Q22. Generalibility of results to other populations 0.5 0.5 0.5 0.5 0.5 0 0.5 0 0 0 0
Overall quality score (range 0 to 1) 0.70 0.68 0.66 0.61 0.57 0.57 0.55 0.52 0.52 0.50 0.59
  1. Key: 1 =” Yes”, 0.5 = “Partial”, 0 = “No” or “Unable to determine”
  2. Abbreviations: EAI epidemiological appraisal instrument