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