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Table 2 Criteria for evidence strength

From: Neighborhood infrastructure-related risk factors and non-communicable diseases: a systematic meta-review

Strength

No. of supporting individual studies

Average score, S

Limited

 ≤ 1

 

Weak

 ≥ 2

0 ≤ S ≤ 2

Medium

 ≥ 2

2 < S < 9

Strong

 ≥ 2

9 ≤ S