APQ questionnaire confirmatory factor analysis in subjects 65 or older (Figure
a) and in subjects aged 55 to 65 (Figure
b). On this figure, ovals represent factors and rectangles questionnaire items. Inside rectangles are given the item number (see Additional file 1 for litteral items) and its standardized error variance estimate in parentheses. Unidirectional arrows represent associations between factors and items according to the CFA model with standardized factor loadings estimates. Bidirectional arrows represent factor correlations with their estimates; dotted lines are associated with low correlations (< .20). Conseq. Positive and Conseq. Negative: sub-dimensions consequences positive and consequence negative Emotional represent.: dimension emotional representations.