Quality assessment of included studies using the Newcastle-Ottawa Scale adapted for cross-sectional studies
| Selection | Comparability | Outcome | ||||||
|---|---|---|---|---|---|---|---|---|
| First author, year | Clear definition of migration status | Sample size calculation reported | Participants representative of RUM group | Non-respondents documented | Comparable participants; control for potential confounders | Objective only and/or subjective assessment | Appropriate statistical test | Total |
| Anand, 2014 | X | X | X | X | 4 | |||
| Antai, 2010 | X | X X | X | X | X | x | 7 | |
| Chhabra, 2007 | X | X X | X | X | x | 6 | ||
| Guo, 2000 | X | X X | X | 4 | ||||
| Han, 2014 | X | X | X | X | X X | x | 7 | |
| Hu, 2013 | X | X | X X | X | X | X | x | 8 |
| Huang, 2011 | X | X X | 3 | |||||
| Keshri, 2013 | X | X X | X | X | X | x | 7 | |
| Kusuma, 2010 | X | X | X X | X | X | X | x | 8 |
| Sun, 2005 | X | X | X X | X X | X | X X | x | 10 |
| Tamoghna, 2011 | X | X | X | 3 | ||||
Based on an adapted form of the Newcastle-Ottawa scale for cohort studies adapted by Herzog et al for cross-sectional studies http://www.biomedcentral.com/1471–2458/13/154.
RUM, rural–urban migrants.