Shift analysis of modified Rankin Scale (mRS) scores (0–5) in 979 iNPH patients: at baseline and 3 months after surgery, and self-reported mRS (smRS) at 2–6 years after surgery. Black numbers within the bars represent the number of patients obtaining each score on the mRS and smRS. White numbers show the proportion of patients with scores between 0 and 2, i.e., able to live a life independent of help from others