Development and reliability of an instrument to measure psychosocial determinants of salt consumption among hypertensive patients.
This study aimed to present the content validity and reliability analyses of an instrument to study the determinant factors of salt consumption among hypertensive subjects, based on an extension of the Theory of Planned Behavior. Content validity was assessed by 3 experts and a pre-test was carried out with 5 subjects. The final tool, comprising 3 different behaviors related to salt consumption and corresponding psychosocial variables, was applied to 32 subjects for internal consistency and temporal stability (15-day interval) analysis. Cronbach's alpha coefficients > 0.70 and significant intra-class correlation coefficients were observed for most variables, indicating the temporal stability of the measured concepts. The developed instrument exhibited evidence of both content validity and reliability.
Cornélio
Marília Estevam
ME
Universidade Estadual de Campinas, Brazil. mariliamec@yahoo.com.br
Gallani
Maria Cecília Bueno Jayme
MC
Godin
Gaston
G
Rodrigues
Roberta Cunha Matheus
RC
Mendes
Roberto Dela Rosa
RD
Nadruz Junior
Wilson
W
D005260:Female; D006801:Humans; D006973:Hypertension / Q000523:psychology*; D008297:Male; D008875:Middle Aged; D017673:Sodium Chloride, Dietary / Q000008:administration & dosage; D011795:Surveys and Questionnaires
D017673:Sodium Chloride, Dietary