Selection | Comparability | Outcome | |||||||
---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 1 | 1 | 2 | 3 | Total | |
Karoussis et al. [31] | ★b | ★ | ★a | ★ | ★b | ★ | 6★ | ||
Gatti et al. [32] | ★b | ★ | ★a | ★ | ★b | ★ | ★b | 7★ | |
Swierkot et al. [33] | ★b | ★a | ★ | ★b | ★ | 5★ |
Selection | Comparability | Outcome | |||||||
---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 1 | 1 | 2 | 3 | Total | |
Karoussis et al. [31] | ★b | ★ | ★a | ★ | ★b | ★ | 6★ | ||
Gatti et al. [32] | ★b | ★ | ★a | ★ | ★b | ★ | ★b | 7★ | |
Swierkot et al. [33] | ★b | ★a | ★ | ★b | ★ | 5★ |