Fig. 1
From: A research tool for measuring non-participation of older people in research on digital health
Processes behind non-participation in the process of recruiting study participants. Legend: Non-participation results from two processes: (1) non-recruitment and (2) self-selection. (1) the non-recruitment process distinguishes eligible individuals from non-recruited individuals, within the target population, and (2) the self-selection process distinguishes study participants from those who decline to participate, among the eligible individuals