Table 2.
Quality assessment of studies in 2nd study set for meta-analyses using Newcastle-Ottawa Scale
| Author | Year | Selection | Compatibility | Outcomes | Total | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |||
| Liu et al.[10] | 2004 | ▲ | ▲ | ▲ | - | ▲▲ | ▲ | ▲ | ▲ | 8 |
| Franco et al.[25] | 2011 | ▲ | ▲ | ▲ | - | ▲ | ▲ | ▲ | ▲ | 7 |
| Wu et al. [26] | 2011 | ▲ | ▲ | ▲ | - | ▲ | ▲ | ▲ | ▲ | 7 |
| Smith et al.[27] | 2006 | ▲ | ▲ | ▲ | - | ▲ | ▲ | ▲ | ▲ | 7 |
| Haan et al.[28] | 2004 | ▲ | ▲ | ▲ | - | ▲ | ▲ | ▲ | ▲ | 7 |
| Ekeh et al.[30] | 2005 | ▲ | ▲ | ▲ | - | ▲ | ▲ | ▲ | ▲ | 7 |
| Wu et al.[32] | 2008 | ▲ | ▲ | ▲ | - | ▲ | ▲ | ▲ | ▲ | 7 |
| Killeen et al.[53] | 2001 | ▲ | ▲ | ▲ | - | ▲ | ▲ | ▲ | ▲ | 7 |
| Gaarder et al.[56] | 2006 | ▲ | ▲ | ▲ | - | ▲▲ | ▲ | ▲ | ▲ | 8 |
| Cooney et al.[57] | 2005 | ▲ | ▲ | ▲ | - | ▲▲ | ▲ | ▲ | ▲ | 8 |
▲one point
▲▲two points