Table 2.
N | Criteria | Reviewer (R) | Rizvi et al., 2018 | Khan et al., 2016 | Erku et al., 2016 | Pawluk et al., 2015 | Avent et al., 2018 | Sarwar et al., 2018 | Wilcock et al., 2017 | Rehman et al., 2018 | Hancock et al., 2016 | Lee et al., 2017 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Was there a clearly defined research question? | R1 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
R2 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||
2 | Did the authors select samples that well represent the population to be studied? | R1 | ✓ | ✓ | ✓ | x | x | ✓ | x | x | ✓ | x |
R2 | ✓ | ✓ | ✓ | x | ? | ✓ | x | x | ✓ | x | ||
3 | Did the authors use designs that balance costs with errors? | R1 | ? | x | ? | x | ? | ? | x | ? | ? | ? |
R2 | ? | x | x | x | ? | ? | x | ? | ? | ? | ||
4 | Did the authors describe the research instrument? | R1 | ✓ | ✓ | ✓ | x | x | ✓ | x | ✓ | ✓ | ✓ |
R2 | ✓ | ✓ | ✓ | ? | x | ✓ | x | ✓ | ✓ | ? | ||
5 | Was the instrument pretested? | R1 | ✓ | ✓ | ✓ | ✓ | x | ✓ | x | ✓ | ? | x |
R2 | ✓ | ✓ | ✓ | ✓ | x | ✓ | ? | ✓ | ? | ? | ||
6 | Were quality control measures described? | R1 | ✓ | ? | ✓ | x | ? | ✓ | x | ✓ | ✓ | x |
R2 | ✓ | ? | ✓ | x | x | ✓ | x | ? | ✓ | ? | ||
7 | Was the response rate sufficient to enable generalizing the results to the target population? | R1 | ✓ | ✓ | ✓ | x | ? | ✓ | x | x | x | x |
R2 | ✓ | ✓ | ✓ | x | x | ✓ | x | x | x | x | ||
8 | Were the statistical, analytic, and reporting techniques appropriate to the data collected? | R1 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ? | x | ✓ | ✓ |
R2 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | x | x | ? | ✓ | ||
9 | Was evidence of ethical treatment of human subjects provided? | R1 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
R2 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||
10 | Were the authors transparent to ensure evaluation and replication? | R1 | ✓ | ✓ | ✓ | x | x | ✓ | x | ✓ | x | x |
R2 | ✓ | ✓ | ? | x | x | ✓ | x | ✓ | ? | x | ||
Quality of survey studies | H | H | H | L | L | H | L | M | M | L |
H = high quality; M = medium quality; L = low quality; ? = unclear; x = no; ✓ = yes. Scoring: high quality (score ≥ 8), medium quality (5 ≤ score < 8) and low quality (score < 5).