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Table 1 Quality rating scores for all papers included in the systematic review.NA=Not applicable

From: Do physical activity interventions in Indigenous people in Australia and New Zealand improve activity levels and health outcomes? A systematic review

Author Selection bias Study design Confounders Blinding Data collection method Withdrawals and dropouts Overall rating
Biddle et al. [48] Weak Strong Weak NA Strong Strong Weak
Canuto et al. [49] Moderate Strong Strong NA Strong Weak Moderate
Chan et al. [43] Weak Moderate NA NA Strong Moderate Moderate
Coppell et al. [50] Weak Moderate NA Weak Strong Weak Weak
Davey et al. [40] Weak Moderate NA NA Strong Moderate Moderate
Dimer et al. [51] Moderate Moderate NA NA Strong Weak Moderate
Egger et al. [42] Weak Strong NA NA Strong Strong Moderate
Gracey et al. [52] Strong Moderate NA NA Strong Weak Moderate
McAuley et al. [36] Weak Moderate NA NA Strong Strong Moderate
Mendham et al. [41] Moderate Strong Strong Moderate Strong Weak Moderate
O’Dea [39] Weak Moderate NA NA Strong Strong Moderate
Rowley et al. [35] Weak Moderate Strong Weak Strong Weak Weak
Sukala et al. [53] Moderate Moderate Strong Moderate Strong Moderate Strong
Overall score 1 strong, 3 moderate, 9 weak 4 strong, 9 moderate, 0 weak 4 strong, 0 moderate, 1 weak, 8 NA 0 strong, 2 moderate, 2 weak, 9 NA 13 strong, 0 moderate, 0 weak 4 strong, 3 moderate, 6 weak 1 strong, 9 moderate, 3 weak