Reference | D&B score | Level of evidence |
---|---|---|
Sherry and Best19 | 16 | Fair |
Silder et al20 | 18 | Fair |
Reynolds et al17 | 16 | Fair |
Malliaropoulos et al18 | 14 | Poor |
Cibulka et al16 | 15 | Fair |
Askling et al21 | 15 | Fair |
Askling et al22 | 15 | Fair |
Reurink et al24 | 25 | Good |
Hamid et al23 | 19 | Fair |
Hamilton et al25 (PRP vs no injection) | 24 | Good |
Hamilton et al25 (PRP vs platelet-poor plasma) | 27 | Excellent |
*Scores for all 28 questions are listed in the online supplementary table S3. Hamilton et al25 was given two separate D&B scores because it used two different controls which were blinded in two different ways.
D&B, Downs and Black; PRP, platelet-rich plasma.