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Figure 1 (A) Cost‐effectiveness plane for quality‐adjusted life years (QALYs) gained at 65 weeks for behavioural graded activity versus usual care. (B) Cost‐effectiveness plane for the difference, at 65 weeks, in the proportion of responders according to the Outcome Measures in Rheumatology–Osteoarthritis Research Society International response criteria for behavioural graded activity versus usual care.
