Arrange the Following Levels of Evidence (Based on ASHA, 2004)

Short Answer

Arrange the following levels of evidence (based on ASHA, 2004) in order of credibility:
A)Expert committee report, consensus conference,
B)clinical experience of respected authorities;
C)well-designed meta-analysis of > 1 randomized controlled trial;
D)well-designed non-experimental studies, i.e., correlational and case studies;
E)well-designed randomized controlled study;
F)well-designed quasi-experimental study (including single-case experimental designs [SCED] such as multiple baseline design across participants or behaviors);
G)well-designed controlled study without randomization.