Reproducibility of a questionnaire on physical activity among school students from 9 to 15 years of age/Reprodutibilidade de um questionario de atividade fisica em escolares de 9 a 15 anos de idade

• Published in: Ciência & saude coletiva 2018-11, Vol.23 (11), p.3841
• Main Authors: Bacil, Eliane Denise Araujo, Piola, Thiago Silva, Watanabe, Priscila Iumi, da Silva, Michael Pereira, Legnani, Rosimeide Francisco Santos, de Campos, Wagner
• Format: Article
• Language: Portuguese
• ISSN: 1413-8123
• DOI: 10.1590/1413-812320182311.22832016

The objective of this study was to analyze the "test-retest" reproducibility of a questionnaire on physical activity among 1189 school students of both genders, from 9 to 15 years age in public schools in Curitiba/PR. The reproducibility of the questionnaire was determined by the repeated measures procedure called "test-retest", with an interval of one week between applications. For data analysis the Intraclass Correlation Coefficient (ICC), the percentage of correlation, the Kappa index, adjusted Kappa (Kappa PABAK) and Bland-Altman scatter diagram were used. Statistical analyses were performed using SPSS 21.0 adopting a 5% significance level. All ICC were higher than 0.80. The correlation between the application replicas of the questionnaire was moderate, Kappa ranging from 0.51 to 0.61. There was a correlation between the questionnaire applications, the average difference between the first and second being equal to 106.49 min/wk (IC95%: 79.05-133.92) with limits of correlation ranging from 1070.97 (+2SD) to -857.99 (-2SD) min/week. In conclusion, the survey analyzed in this study showed satisfactory levels of reproducibility, having the possibility of being used to measure physical activity in both children and adolescents.Key words Reproducibility of results, Questionnaire, Physical activity, StudentsO objetivo deste estudo foi analisar a reprodutibilidade "teste-reteste" de um questionario de Atividade Fisica em 1.189 escolares, de ambos os sexos, de 9 a 15 anos da rede publica de ensino de Curitiba/PR. A reprodutibilidade do questionario foi determinada pelo procedimento de medidas repetidas "teste-reteste" com uma semana de intervalo entre as aplicacoes. Para a analise dos dados utilizou-se o Coeficiente de Correlacao Intraclasse (CCI), o percentual de concordancia, o indice Kappa, o Kappa ajustado (Kappa PABAK) e o diagrama de dispersao de Bland-Altman. As analises estatisticas foram efetuadas no SPSS 21.0 adotando-se um nivel de significancia de 5%. Todos os CCI foram superiores a 0,80. A concordancia entre as replicas de aplicacao do questionario foi moderada, Kappa variando de 0,51 a 0,61. Verificou-se concordancia entre as replicas de aplicacao do questionario, sendo a diferenca media entre a primeira e a segunda igual a 106,49 min/semana (IC95%: 79,05-133,92) com limites de concordancia variando de 1.070,97 (+2DP) a -857,99 (-2DP) min/semana. Conclui-se que o questionario analisado neste estudo apresentou niveis satisfatorios de reprodutibilid