Author and year | Are there clear quantitative research questions (objectives)? | Do the collected data address the research question (objective)? | Are participants recruited in a way that minimises selection bias? | Are measurements appropriate regarding the exposure/intervention and outcomes? | In the groups being compared, are the participants comparable, or do researchers take into account the difference between the groups? | Are there complete outcome data (80% or above), or an acceptable follow-up rate for cohort studies (depending on the duration of follow up)? | Overall quality score |
---|---|---|---|---|---|---|---|
Tennant et.al., 2000 [16] | yes | yes | yes | yes | yes | yes | 1 |
Smith et.al, 2006 [17] | yes | yes | yes | yes | yes | yes | 1 |
Kruger et.al, 2006 [15] | yes | yes | yes | yes | yes | yes | 1 |
Slack-Smith et.al, 2008 [12] | yes | yes | yes | yes | yes | yes | 1 |
Slack-Smith et.al, 2011 [13] | yes | yes | yes | yes | yes | yes | 1 |
Slack-Smith et.al, 2012 [11] | yes | yes | yes | yes | yes | Yes | 1 |
Verma et.al, 2014 [10] | yes | yes | yes | yes | yes | Yes | 1 |
Alsharif et.al,2014 [14] | yes | yes | yes | yes | yes | Yes | 1 |
Kruger et.al, 2015 [20] | yes | yes | yes | yes | yes | Yes | 1 |
Kruger et.al, 2016 [19] | yes | yes | yes | yes | yes | Yes | 1 |
Kruger et.al, 2016 [18] | yes | yes | yes | yes | yes | Yes | 1 |