| Journal article | CASP Screening questions (1 - 14) with assigned values | |||||||||||||
| 0 = No Relevance; 0.5 = Unsure; 1 = Yes, there is relevance | ||||||||||||||
| Authors | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Ambalavanan et al. 2013 | 0.5 | 1 | 1 | 0.5 | 0.5 | 1 | 1 | 1 | 0.5 | 0.5 | 1 | 1 | 1 | 0.5 |
| Belade et al. 2012 | 1 | 0 | 0.5 | 0 | 0 | 0.5 | 0.5 | 0 | 0.5 | 1 | 1 | 0.5 | 1 | 1 |
| Boffetta et al. 2004 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ellis et al. 2010 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0.5 | 1 | 1 | 1 | 0.5 |
| Grassian et al. 2007 | 1 | 1 | 1 | 0.5 | 0.5 | 1 | 1 | 1 | 0.5 | 1 | 1 | 1 | 1 | 1 |
| Lai et al. 2008 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ling et al. 2011 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Naya et al. 2012 | 1 | 0.5 | 1 | 0.5 | 1 | 1 | 1 | 0.5 | 0.5 | 0.5 | 1 | 1 | 1 | 1 |
| Osman et al. 2010 | 0.5 | 1 | 1 | 0.5 | 0.5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0.5 |
| Srivastava et al. 2012 | 1 | 0.5 | 1 | 0.5 | 0.5 | 1 | 1 | 0.5 | 0.5 | 1 | 1 | 1 | 1 | 1 |
| Zhang et al. 2013 | 0.5 | 0.5 | 1 | 0.5 | 0.5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |