TABLE 1

Quality assessment of the included studies with the Delphi List

First author [ref.]	Randomisation	Concealed allocation	Groups similar	Eligibility criteria	Assessor blinded	Care provider blinded	Patient blinded	Point estimates and measures of variability	Intention-to-treat analysis	Total
Kirsten [32]	Yes	Don't know	Yes	Yes	Don't know	No	No	Yes	No	4/9
Nava [37]	Yes	Don't know	Yes	Yes	Don't know	Don't know	Don't know	Yes	No	4/9
Bellone [54]	Yes	No	Yes	Yes	Don't know	Don't know	Don't know	Yes	No	4/9
Hernandez [56]	Yes	No	Yes	Yes	Don't know	Don't know	Yes	Yes	No	5/9
Yohannes [52]	Yes	Don't know	Yes	Yes	Yes	Yes	Yes	Yes	No	7/9
Man [35]	Yes	Don't know	Yes	Yes	No	No	No	Yes	Yes	5/9
Murphy [36]	Yes	Yes	Yes	Yes	Don't know	Don't know	No	Yes	No	5/9
Casas [19]	Yes	No	No	Yes	Don't know	Don't know	Yes	Yes	Yes	5/9
Garcia-Aymerich [47]	Yes	No	Yes	Yes	Don't know	No	Yes	Yes	No	5/9
Eaton [29]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	7/9
Kodric [48]	Yes	Don't know	Don't know	Yes	Don't know	Don't know	Don't know	Yes	No	3/9
Babu [25]	Yes	Don't know	No	Yes	No	No	Yes	Yes	No	4/9
Seymour [38]	Yes	Yes	Yes	Yes	No	Don't know	No	Yes	Yes	6/9
Troosters [43]	Yes	Yes	Yes	Yes	No	No	No	Yes	No	5/9
Ko [33]	Yes	Don't know	Yes	Yes	Yes	No	No	Yes	Yes	6/9
Cross 2012 [20]	Yes	Yes	Yes	Yes	Don't know	Don't know	No	Yes	Yes	6/9
Puhan [23]	Yes	Yes	Yes	Yes	Don't know	Don't know	Don't know	Yes	Yes	6/9
Tang [40]	Yes	Don't know	Yes	Yes	Yes	No	Don't know	Yes	Yes	6/9
Chaplin [27]	Yes	Don't know	Ye	Yes	No	No	Yes	Yes	No	5/9
Lainscak [57]	Yes	Yes	Yes	Yes	No	No	No	Yes	No	6/9
Ali [24]	Yes	Don't know	Yes	Yes	Don't know	No	No	Yes	No	4/9
Borges [26]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	No	6/9
Deepak [28]	Yes	No	Yes	Yes	Don't know	Don't know	Don't know	Yes	No	4/9
Greulich [30]	Yes	Yes	Yes	Yes	Yes	Yes	Don't know	Yes	No	7/9
Osadnik [22]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	No	6/9
Song [39]	Yes	Don't know	Yes	Yes	No	No	Yes	Yes	No	5/9
Valenza [55]	Yes	Don't know	Yes	Yes	Don't know	No	Don't know	Yes	Yes	5/9
He [31]	Yes	Don't know	No	Yes	Don't know	Don't know	Don't know	Yes	No	3/9
Liao [34]	Yes	Don't know	Yes	Yes	Yes	No	No	Yes	No	5/9
Benzo [18]	Yes	No	Yes	Yes	Yes	No	Don't know	Yes	Yes	6/9
Eastwood [49]	Yes	Don't know	Yes	Yes	Yes	No	No	Yes	No	5/9
Johnson-Warrington [21]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	7/9
Torres-Sánchez [42]	Yes	Don't know	Yes	Yes	Yes	No	No	Yes	No	5/9
Basri [50]	Yes	No	No	Yes	Yes	No	Yes	No	No	4/9
Torres -Sánchez [41]	Yes	Yes	Yes	Yes	Yes	No	Don't know	Yes	No	6/9
Aboumatar [58]	Yes	No	Yes	Yes	Yes	No	No	Yes	Yes	6/9
Janaudis-Ferreira [59]	Yes	Don't know	Yes	Yes	Yes	No	No	Yes	No	5/9
Lopez-Lopez [53]	Yes	Yes	Yes	Yes	Don't know	No	No	Yes	No	5/9
Torres-Sánchez [51]	Yes	Yes	Yes	Yes	Don't know	No	No	Yes	No	5/9
Lopez-Lopez [46]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	Yes	7/9
Lopez-Lopez [45]	Yes	Yes	Yes	Yes	Yes	No	No	Yes	No	6/9
Kjærgaard [44]	Yes	Yes	Yes	Yes	No	No	No	Yes	Yes	6/9