Appendix 2

Qualification of the articles with the QUADAS tool.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14
Säwe, 197119	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	?	yes	yes	no

Säwe, 197220	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	?	yes	yes	no

Van der Does, 198021	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	no	yes	yes	yes

Short, 198122	yes	yes	yes	no	yes	yes	yes	no	yes	yes	no	yes	yes	yes

Lee, 198523	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	no

Tierney, 198624	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	no

Hargarten, 198725	yes	yes	yes	yes	yes	yes	yes	yes	no	?	no	yes	no	no

Herlihy, 198726	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	?	yes	no	yes

Solomon, 198927	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	yes

Berger, 199028	yes	no	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	yes	no

Jonsbu, 199129	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	no

Gaston-Johansson, 199130	yes	no	yes	yes	yes	yes	yes	yes	yes	?	?	yes	no	no

Hartford, 199331	yes	no	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	yes

Grijseels, 199532	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	yes

Everts, 199633	yes	no	yes	yes	yes	yes	yes	yes	yes	?	?	yes	no	no

Pfister, 199734	yes	yes	yes	yes	yes	yes	yes	no	no	yes	no	yes	no	yes

Lopez-Jimniez, 199835	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	no	no

Pope, 199836	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	?	yes	yes	no

Graf, 200037	yes	yes	no	yes	?	?	yes	yes	no	?	?	yes	no	no

Milner, 200138	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	yes	no	yes

Herlitz, 200239	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	no

Goodacre, 200240	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	yes

Baxt, 200241	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	?	yes	yes	no

Albarran, 200242	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	?	yes	no	no

Vodopiutz, 200243	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	?	yes	no	yes

Svensson, 200344	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	no	yes	no	no

Goodacre, 200345	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	?	yes	no	yes

Christenson, 200646	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes