Figure 1
The figure displays three sequential steps in a green-bordered layout. Step 1 is health screening, where participants with medical barriers to blood donation were excluded. Step 2 focuses on free-riding behaviour, using binary logistic regression to distinguish regular donors from free riders. Step 3 involves motivational typology, excluding regular donors and applying multinomial logistic regression to assess motivation types among non-donors.Overview of the three-stage methodological framework
Source(s): Authors’ own work