A topical cream containing glucosamine sulphate, chondroitin sulphate, and camphor v placebo in osteoarthritis of the knee at 8 weeks‡

OutcomeFollow upActive creamPlaceboDifference between groups (95% CI)
‡CI defined in glossary.
Mean change from baseline in joint pain (visual analogue scale 0–10 cm)Week 4−2.6−1.41.2 (0.1 to 2.4)
Week 8−3.3−1.61.8 (0.6 to 2.9)