Some questions had as options for answer: “yes,” “no,” and “do not know,” while others had “good for the heart,” “bad for the heart,” and “do not know,”
all illustrated with faces. Protein Tyrosine Kinase inhibitor One of the questions (number 14) used a picture from a previously validated study, which was adapted for the purposes of the present study, after consent from the authors. In the final step, a cross-sectional study was applied in the classroom. The sample size calculation for this step was based on the recommendation of Hair et al.,15 who stated that ten tools should be applied for each question. Thus, in the present study, it would be necessary to apply 140 tools. Considering the number of students in the classrooms, the final sample consisted of 145 students. First, the questions were read and the children were asked to mark the correct answer on one side, and on the last question, to selleck products mark the drawing corresponding to the correct answer. Each correctly answered question is equivalent to one point,
with the score ranging from 0 to 14. To assess measures of test and re-test, the tool was administered on two occasions, with a seven-day interval. Data were collected in August of 2012, after approval by the ethics committee, under protocol No. 46.35/11.16 The study was conducted only in schools that agreed to participate. Only children whose parents allowed them to participate and signed an informed consent were enrolled in the study. Continuous variables were expressed as means and standard deviations. Cronbach’s alpha coefficient (α)
was used to determine the internal consistency of the tool; values > 0.7 were accepted as valid. The Student’s t-test was used to compare the results of the test and re-test. The intraclass correlation coefficient (ICC) was used for the test and re-test analysis of reproducibility, with acceptable values close to 1. The item-total correlation test was used to assess reliability; values > 0.2 15 were considered acceptable. A number of tests were used to validate the tool. Load factor analysis was performing, establishing the number of factors to be extracted, using load values ≥ 0.3 as parameters. To calculate the sphericity index, Bartlett’s test was used with a significance level p < 0.05. The measures of sampling adequacy (MSA) of Kaiser-Meyer-Olkin (KMO) was used to measure sample Exoribonuclease adequacy. MSA values were considered satisfactory when ≥ 0.60. Finally, scree plot analysis was performed to verify the number of factors that could be extracted.15 and 17 The sample consisted of 145 children aged 7 to 11 years, all belonging to a philanthropic institution educational project, some from public schools, and the minority from private schools, of whom 60% were females and 40% were males. The time to complete the questionnaire varied between 30 and 45 minutes. During the questionnaire application, it was observed that the children showed interest in answering it.