Costs
upper leg muscle strength
As shown in Costs per arm and cost differences across arms.CI = confidence interval.adjusted for treatment arm, baseline costs, QALY, work status, sex, age, duration of knee symptoms, upper leg muscle strength, and BMI.primary health care, other than the (experimental or control) intervention (e.g., general practitioner, acupuncturist).secondary health care (e.g., hospital, rehabilitation center).(prescribed and over-the-counter) medication (for knee OA only).