Eight-year trajectories of changes in health-related quality of life in knee osteoarthritis: Data from the Osteoarthritis Initiative (OAI)
Fig 2
Estimated HRQoL change (MIC) trajectory groups and proportion of individuals in the groups.
MIC, a minimally important reduction, i.e. a decrease of at least 10 points, in KOOS QoL. Solid lines represent proportion of individuals classified into the HRQoL trajectory groups and dashed lines represent the model estimate size of the HRQoL groups (lines should be closely corresponding). No change in KOOS QoL, 62.9% (green solid line), predicted 59.5% (lighter green dashed line); improving KOOS QoL after decline, 10.4% (blue solid line), predicted 11.9% (lighter blue dashed line); slowly worsening KOOS QoL, 17.1% (yellow solid line), predicted 19.1% (lighter orange dashed line); rapidly worsening KOOS QoL, 9.5% (red solid line), predicted 9.5% (lighter red dashed line).