TableĀ 2

Quality of the included studies according to the Delphi list 25

AuthorYear of publicationReference1a1b2345678Total score
Ahmaidi199326YNSYYNNNYNS4
Basaran20063YNSYNNNNYN3
Chang200827YNSYNNNNYNS3
Counil200328YNSYYYNNYN5
Dean198829NNNNYNNNN1
Edenbrandt199030YNSNNNNNYNS2
Fanelli200731YNYYNYNYY6
Fitch198632NNYNNNNYY3
Graff198033NNNNNNNNY1
Henriksen198334NNNNNNNYY2
Holzer198435NNYNNNNYNS2
Huang198936NNYNNNNNN1
Lima200838YNSYYNNNYN4
Matsumoto199939YNSYNNNNYY4
Moreira200840YYYYNNNYY6
Neder199941NNNNNNNYY2
Onur201042YNSYYNNNYY5
Orenstein198543NNYNNNNYN2
King198937NNNNNNNYNS1
Sidiropoulou200744NNYYNNNYY4
Silva200645YNSYYNNNYY5
Sly197246NNNNNNNNN0
Svenonius198347NNYYNNNYY4
Varray199148NNYYNNNYNS3
Varray199549NNNYNNNYNS2
Veldhoven20012YNSYYNNNYN4
Wang200950YNSYNNNNNY3
Weisgerber200351YNYNNNNYN3
Wicher201052YNSNYNNNYN3
  • 1a, Treatment allocation: randomisation?; 1b, treatment allocation: concealed?; 2, groups similar at baseline?; 3, eligibility criteria specified?; 4, outcome assessor blinded?; 5, care provider blinded?; 6, patient blinded?; 7, point estimates given?; 8, intention-to-treat analysis?; N; no; NS, not stated; Y, yes.