Table 1. Main characteristics of studies included in this meta-analysis.
| Study | Country or Area | Age (year) | Design | Control | Inclusion criteria | Instrument | Dropout | Quality |
|---|---|---|---|---|---|---|---|---|
| Cho 2005 | Hong Kong | 7–12 | CT | Spectacle | -0.25DS to -4.50DS, less than 2.00DC | A-scan | 19% | 16 (minors) |
| Walline 2009 | USA | 8–11 | CT | Soft contact lens | -0.75DS to -4.00DS, less than 1.00DC | A-scan | 30% | 16 (minors) |
| Kakita 2011 | Japan | 8–16 | CT | Spectacle | SE between -0.5D and -10.0D | IOLmaster | 12% | 19 (minors) |
| Cho 2012 | Hong Kong | 6–10 | RCT | Spectacle | -0.50DS to -4.00DS, less than 1.25DC | IOLmaster | 24% | 3 (Jadad) |
| Santodomingo 2012 | Spain | 6–12 | CT | Spectacle | -0.75DS to -4.00DS, less than 1.00DC | IOLmaster | 13% | 18 (minors) |
| Charm 2013 | Hong Kong | 8–11 | RCT | Spectacle | SE at least -5.75D | IOLmaster | 46% | 3 (Jadad) |
| Chen 2013 | Hong Kong | 6–12 | CT | Spectacle | -0.5DS to -5.0DS, 1.25DC to 3.50DC | IOLmaster | 28% | 22 (minors) |