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Structural equation model in adult population. 
—observed variable; 
—latent variable; 
—impact of one variable on another; e—residual error in the prediction of an unobserved factor; diet—dichotomous variable (1 = vegetarian diet, 2 = omnivorous diet); BMI—body mass index; * p < 0.05, ** p < 0.01, *** p < 0.001. The values of standardized coefficients and squared multiple correlations (R2; over the observed variables) are presented.
