A new method of evaluating health care research reports. Refer to The Open Dentistry Journal (Vol. 4, 2010) study of a new method of evaluating health care research reports, Exercise 9.59 (p. 551). Recall that the assessment tool was validated on five systematic reviews (named R1, R2, R3, R4, and R5) on rheumatoid arthritis. For each review, scores on the 11 R-AMSTAR items (all measured on a 4-point scale) were obtained. The data are reproduced in the table below. One goal of the study was to compare the distribution of item scores for the five reviews. Conduct the analysis using the appropriate nonparametric test.