Figure 4From: A commercialized dietary supplement alleviates joint pain in community adults: a double-blind, placebo-controlled community trial Joint pain symptom severity assessed bi-weekly using the 12-point Likert visual scale (12-VS) (2 × 5 interaction effect, P = 0.0125). P-values at each time point represent independent student’s t-test contrasts between groups for changes from pre-study.Back to article page