...-integer linear programming. Design/methodology/approach The concept of principal component analysis (PCA) was used to reduce data dimensionality, and the four best criteria have been considered and selected. The result is subjected to decision-makers’ (DMs’) reliability test using the concept...

.... Design/methodology/approach By applying the statistical tool of principal component analysis, we find a clustering behavior of health user entrepreneurs across countries, indicating that common macro-level conditions affect this phenomenon in a nonlinear way. Findings Healthy user innovators...