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Table 2 Summary of article quality assessment (N = 42)

From: The neighbourhood physical environment and active travel in older adults: a systematic review and meta-analysis

Quality-assessment item [score] Number of studies %
1. Study areas or participant recruitment stratified by key environmental attributes [1] 30 71.4
2. Response rate ≥60% or sample representative of the population [1] 12 28.6
3. Active travel measures (outcomes) valid, or well-established in the field [1] 32 76.2
4. Analyses adjusted for key socio-demographic covariates (at least age, sex and education considered) [1] 38 90.5
5. Analyses adjusted for self-selection [1] 4 9.5
6. Analytical approach – adjustment for clustering (if needed) [1/3] 30 71.4
7. Analytical approach – accounting for distributional assumptions [1/3] 36 85.7
8. Analytical approach – analyses conducted and presented correctly [1/3] 35 83.3
9. Did not (inappropriately) categorise continuous environmental exposures [1] 33 78.6
Total quality score [theoretical range: 0–7], mean (SD) 4.3 1.3