background: we aimed to develop and validate the persian version of short form mcgill pain questionnaire-2 (sf-mpq-2) in patients with knee osteoarthritis. methods: translation and back translation was performed using beaton’s guideline. after a consensus has achieved on the persian version of sf-mpq-2, it was administered to 30 patients with knee osteoarthritis in a pilot study. then, we enrol...

A comparison was made of the virulence in vivo and the infectivity in vitro for macrophages of (i) tissue culture-passed mouse cytomegalovirus (MCMV), (ii) salivary gland virus taken 3 weeks after infection (SGV 3w), and (iii) salivary gland virus taken 1 week after infection (SGV 1w). Salivary gland virus (3w) is known to be coated with non-neutralizing antibody, and is more virulent for newbo...

Spearman’s rank correlation coefficient is a nonparametric (distribution-free) rank statistic proposed by Charles Spearman as a measure of the strength of an association between two variables. It is a measure of a monotone association that is used when the distribution of data makes Pearson’s correlation coefficient undesirable or misleading. Spearman’s coefficient is not a measure of the linea...