As shown, R –Square is higher than .80 for all components. In addition, the value of Q² is more than .35 for all terms which means that the model has a large size of predictive relevance considering the support, normalization, and participation factors.

The goodness of fit is a measure of model fit in PLS, which is a compound of effect size with convergent validity. It varies from 0 to 1. In the present study, Model fit was confirmed by the GoF index which was 0.694. Therefore, the Family Disease Management Questionnaire consists of supports: normalization and participation.