Internal reliability was tested through Cronbach's alpha coefficient, item-total and inter-item correlations.
Item-rest = correlation coefficient item-rest (r between each item and the remaining items belonging to the same factor).
To address the first objective of this study, that is, to investigate the psychometric properties of the MSF instruments, we conducted principal components analysis, reliability coefficient, item-total scale correlation, and interscale correlation analyses [ 13, 17].
Table 2 provides frequency of positive answers, item variance, IRC, Loevinger H coefficients, item test retest reliability and items weight for each subindex (material, social and health deprivation).
All items were positively correlated to the total score, with coefficients item-total (Table 1) ranging from 0.29 ('loss of libido' among girls) to 0.61 ('worthlessness' among girls).
Finally, the null hypothesis associated with the 'Heterogeneity of regression coefficients' item is the same as the original test described above.
Schwartz et al 11 presented means and SDs, internal consistency (Cronbach α), test retest stability coefficients, item-scale intercorrelation and interscale correlations, and finally performed a factor analysis (scree test) to evaluate the factor structure of the SRI items.
These were followed at a considerable distance by "discretion" (Item 4; 0,727 coefficient), "dosage" (Item 3; 0,468 coefficient), and "side effects" (Item 2; 0,470 coefficient).
Note: CFA confirmatory factor analysis, SMC squared multiple correlation, Domain α Cronbach's alpha coefficient for items within the domain, Domain H H coefficient for items within the domain.
