title: Construction and validation of a questionnaire on the knowledge of healthy habits and risk factors for cardiovascular disease in schoolchildren.
abstract: OBJECTIVE
  To develop and analyze the reliability and validity of a questionnaire on the knowledge of healthy habits and risk factors for cardiovascular disease (CARDIOKID) to be used in schoolchildren.
  
  
  METHODS
  The study included 145 children aged 7 to 11 years. The measured factors were the knowledge of healthy habits and risk factors for cardiovascular disease. Cronbach's alpha and intra-class correlation coefficient (ICC) were used to verify reliability, and exploratory factor analysis was used to assess the validity of the questionnaire.
  
  
  RESULTS
  The sample consisted of 60% females and 40% males. In factorial analysis, the Kaiser-Meyer-Olkin (KMO) test result was measures of sampling adequacy (MSA)=0.81 and Bartlett's test of sphericity was X(2)=(66)=458.64 (p<0.001). In the factorial analysis with varimax rotation, two dimensions were defined. The "healthy habits" dimension was composed of five factors (ICC=0.87 and α=0.93) and the "cardiovascular risk factors" dimension was composed of seven factors (ICC=0.83 and α=0.91). In the individual factor analysis, Cronbach's alphas were between 0.93 and 0.91. Total variance was 46.87%. There were no significant differences between test and retest applications.
  
  
  CONCLUSIONS
  The questionnaire presented satisfactory validity and reliability (internal consistency and reproducibility), allowing for its use in children.
authors.affiliation: Instituto de Cardiologia do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Fátima H
authors.initials: FH
authors.lastname: Cecchetto
authors.affiliation: Instituto de Cardiologia do Rio Grande do Sul, Porto Alegre, RS, Brazil. Electronic address: pellanda.pesquisa@gmail.com.
authors.forename: Lucia C
authors.initials: LC
authors.lastname: Pellanda
mesh_terms: D002318:Cardiovascular Diseases / Q000175:diagnosis*; D002648:Child; D005163:Factor Analysis, Statistical; D005247:Feeding Behavior / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D011594:Psychometrics; D015203:Reproducibility of Results; D012307:Risk Factors; D013334:Students / Q000523:psychology*; D011795:Surveys and Questionnaires / Q000592:standards*
keywords: Atividade motora; Child; Comportamentos saudáveis; Criança; Estudos de validação; Food habits; Healthy behavior; Hábitos alimentares; Motor activity; Questionnaires; Questionários; Validation studies