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Table 2 Criteria for methodological quality assessment and number (%) of studies scoring points for each criterion

From: Social and physical environmental correlates of independent mobility in children: a systematic review taking sex/gender differences into account

  Studies fulfilling the criteria n (%)
Yes Partial
Criteria   
 1 Were the aims/objectives of the study clear? 27 (100) 0 (0)
Methods
 2 Was the study design appropriate for the stated aims? 6 (22) 21 (78)
 3 Were the main features of the study population stated (description of sampling frame, distribution by age and sex/gender)? 14 (52) 13 (48)
 4 Was the response rate at least 80%? 2 (8) 0 (0)
 5 Were measures undertaken to address and categorize non-responders? 3 (11) 0 (0)
 6 Were the exposure and outcome variables measured appropriate to the aims of the study? 17 (63) 10 (37)
 7 Were standardized methods of acceptable quality used to measure IM?a 12 (44) 6 (22)
 8 Were standardized methods of acceptable quality used to measure correlates?a 18 (69) 6 (22)
 9 It is clear what was used to determine statistical significance and/or precision estimated (e.g., p values, confidence intervals)? 23 (85) 2 (8)
Results
 10 Were the results internally consistent? 26 (96) 1 (4)
 11 Were the results presented for all the analyses described in the methods? 23 (85) 4 (15)
  1. aReliability: ICC > 0.70; Cronbach’s alpha > 0.65, pilot testing, published previously