Nevertheless,the analysis suggested a trend for the efficacy of either glucosamine
sulfate or the DEP to decrease the incidence of knee OA. We
hypothesized that the statistical interaction observed might be due,
at least in part,to the lack of sufficient precision in the method of
assessing radiographic mJSW,and thus mJSN,that was performed in
both the medial and lateral tibiofemoral compartments and consisted
of visual(manual)reading of the knee radiographs.