Figure 3

Geographical spread of DILT1D study participants residence by recruitment source (N = 45). a) The internet source (blue) extended the geographical reach of the study, allowing international participation. b) The clinics (green) and register sources (red) enabled local and national recruitment. c) On average, participants recruited from the internet source (204.1 km) travelled further on average than those recruited from the clinics (54.7 km) or register (105.9 km).