Table 2.

Quality assessment.

Source [42]	Quality Item	No. of Publications Scored “Yes”
Added by authors	Consecutive patients?	2 [28,36]
Delphi list	Were inclusion criteria specified?	8 [27,28,31,32,35,36,37,43]
Delphi list	Were exclusion criteria specified?	2 [32,35]
Delphi list	Were point estimates and measures of variability presented for the primary outcome measures?	8 [27,28,31,32,35,36,37,43]
Considered for Delphi list	Was calculation of statistical power reported?	6 [27,31,35,36,37,43]