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. 2019 Jun 13;19:204. doi: 10.1186/s12909-019-1576-0

Table 2.

Summary of quality score of the 17 quantitative studies

Good (rated 4) Fair (rated 3) Poor (rated 2) Very poor (rated 1) Total rated
Abstract and title 9 4 0 4 17
Introduction and aims 3 11 3 0 17
Method and data 0 12 5 0 17
Sampling 2 6 9 0 17
Data analysis 3 2 1 11 17
Ethics and bias 2 4 6 5 17
Findings/results 12 6 0 0 17
Transferability/generalizability 0 12 5 0 17
Implications and usefulness 5 7 0 0 17
Distribution of Total score (max score = 36) 1 × 17 – 2 × 19 – 1 × 20 – 1 × 24 – 3 × 25 – 1 × 26 – 2 × 27 – 1 × 28 – 2 × 29 – 3 × 30