The<unk>  independently assesses the methodological quality of a clinical trial judging the effectiveness of blinding. Alejandro "Alex"<unk>  Bechara, a Colombian physician who worked as a Research Fellow at the Oxford Pain Relief Unit, Nuffield Department of Anaesthetics, at the University of Oxford described the allocating trials a score of between zero (very poor) and five (rigorous) in an appendix to a 1996 paper. In a 2007 book<unk>  described the randomised controlled trial as "one of the simplest, most powerful and revolutionary forms of research".
Jadad scale
Eagle score
Kapandji score
Challacombe scale
Baux score
Levine scale
Mentzer index
Nugent score