Validez y confiabilidad de la versión peruana del child perceptions questionarie en escolares de colegios oficiales de Floridablanca

Abstract

Objective: to assess the validity and reliability of the Peruvian version of Child Perception Questionnaire (CPQ11-14) in schoolchildren aged 11 to 14 enrolled in the public schools of Floridablanca (Colombia). Methods: the study was carried out with 500 students aged 11 to 14 years who completed the CPQ11-14 during their school day after their parents signed Informed Consent and the minors accepted. As variables, the 37 items of the questionnaire and the sociodemographic characteristics were analyzed. Reliability was assessed by internal consistency (Cronbach's alpha) and test-retest reproducibility was assessed with Intraclass Correlation Coefficient and Bland and Altman Agreement Limits. The validation was performed by the Rasch analysis, considering the aspects described by Messick and interpreted by Wolfe and Smith. Proportions and frequencies for the qualitative variables and measures of central tendency and the dispersion were calculated for the quantitative ones. the software Stata version 12.0 and Winsteps were used. Results: 210 (42.0%) men participated in the study, mean age was 12.7 ± 1.1 years [CI 95%: 12.6 - 12.8]. An internal consistency of 0.91 was obtained, the Intraclass Correlation Coefficient was 0.63 and the average of the differences was not close to zero. It was necessary to group two categories; all items fitted to the Rasch model and obtained infit and outfit values within the appropriate ranges for this type of test (0.6 - 1.4). However, a Differential Item Function of the was observed for question 14, so it was necessary to remove it from the analysis. The instrument did not show to be unidimensional and the proportion of variance explained by the measures was poor (26.3%). Conclusions: it was necessary to reduce the instrument to 36 items and to collapse the number of categories, from five to three. The result of the test-retest reproducibility was not satisfactory but the measurement of the internal consistency of the instrument was excellent. The questionnaire did not show to be unidimensional but the items that conform the four dimensions adjusted to the Rasch model.