Fig. 1From: Outpatient physical therapy population has been aging faster than the general population: a total population register-based studyProportions of different age groups in the outpatient physical therapy population and the general Icelandic population, in 1999 and 2015. Legend. OPT outpatient physical therapy; The proportions on the y-axes are on a logarithmic scale to accentuate the older age groupsBack to article page