Study | Study type* | Participants†| Outcome(s)‡ | Predictors§ | Sample size|| | Missing data¶ |
---|---|---|---|---|---|---|
Georgieff,1989 [40] | - | - | + | + | + | ? |
Gray,1992 [19] | - | - | + | + | ? | + |
Davies,1995 [33] | + | + | + | + | + | ? |
Eriksson,2002 [34] | - | - | + | + | + | + |
Zupancic,2002 [35] | - | + | ? | + | + | ? |
Mendes,2006 [36] | - | - | + | + | + | + |
Rojas,2011 [37] | - | - | + | + | + | ? |
Oygur,2012 [38] | + | - | + | + | + | - |
Shah,2015 [32] | + | - | + | + | ? | + |
Wu,2015 [39] | + | - | + | + | + | ? |