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Evidence of validity of the Risk Self-Medication Questionnaire focused on Health Literacy
Márcio Adriano Fernandes Barreto1, Francisca Diana da Silva Negreiros2, Virna Ribeiro Feitosa Cestari3
1Universidade do Estado do Rio Grande do Norte. Pau dos Ferros, Rio Grande do Norte, Brazil.
Objectives:
to analyze the validity evidence of the internal structure of the Risk Self-Medication Questionnaire Focused on Health Literacy.
Methods:
a psychometric study with 499 adults. The internal structure was assessed with exploratory and confirmatory factor analysis to prove the adjustment. Internal consistency was measured by composite reliability and McDonald's omega coefficient (ω).
Results:
the parameters revealed a model of 35 items distributed across four factors, explaining 56% of the total variance, with factor loadings ranging from 0.31 to 0.85 and adequate communalities. Accuracy (0.79
Conclusions:
an instrument was obtained with good evidence of structural validity for measuring self-medication.
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