Table 2 Assessment of the quality of all studies included in the review based on Effective Public Health Practice Project: Quality assessment tool for quantitative studies
Study no. | Author (Year) [Reference] | Selection bias | Study design | Confounders | Blinding | Data collection methods | Withdrawals and drop-outs | Final rating |
|---|---|---|---|---|---|---|---|---|
1 | Kinung’hi et al. (2014) [27] | 2 | 3 | 1 | 1 | 1 | 2 | 2 |
2 | Mazigo et al. (2010) [28] | 2 | 3 | 1 | 1 | 1 | 2 | 2 |
3 | Righetti et al. (2012) [29] | 3 | 3 | 1 | 1 | 1 | 2 | 2 |
4 | Mboera et al. (2011) [30] | 2 | 3 | 1 | 1 | 2 | 2 | 2 |
5 | Abanyie et al. (2013) [31] | 2 | 1 | 1 | 1 | 1 | 3 | 2 |
6 | Achidi et al. (2008) [32] | 2 | 3 | 2 | 1 | 2 | 2 | 2 |
7 | Roussilhon et al. (2010) [33] | 2 | 2 | 1 | 2 | 1 | 1 | 2 |
8 | Bejon et al. (2008) [34] | 2 | 1 | 1 | 2 | 1 | 1 | 2 |
9 | Kung’u et al. (2009) [35] | 2 | 3 | 2 | 1 | 1 | 2 | 2 |
10 | Nkuo-Akenji et al. (2006) [36] | 2 | 3 | 2 | 1 | 2 | 2 | 2 |
11 | Kirwan et al. (2010) [37] | 2 | 1 | 1 | 1 | 1 | 3 | 2 |