Construct validity of the Individual Lifestyle Profile scale in times of social distancing / Validade de constructo da escala Perfil do Estilo de Vida Individual em tempos de distanciamento social

ABSTRACT

The aims of the study were to estimate the level of reliability and factorial validity of the "Individual Lifestyle Profile" scale in times of social distancing, through confirmatory factor analysis (CFA). Therefore, the "Individual Lifestyle Profile" scale in times of social distancing was used in a study carried out with samples of students and employees of higher education institutions from different Brazilian regions. The final sample consisted of 4,694 adults who have answered the online form. For construct evaluation, internal consistency analysis was performed using Cronbach's Alpha (a) and Spearman's correlation. The CFA was used to test the hypothetical factor structure of the scale. Overall internal consistency was a = 0.778 and there were significant correlations, however, less than ± 0.799 for items from the same constructs and ± 0.499 among items from different constructs. In the CFA, after adjustments to the model structure, all indicators were adequate (Goodness-of-fit Index 0.976; Comparative Fit Index 0.937; Normalized Fit Indices 0.932; Tucker-Lewis Indi-ces 0.914; Root Mean Square Error of Approximation 0.047; Root Mean-Square Residual 0.031; Standardized Root Mean-Square Residual 0.0337), with the exception for chi-square p values and the ratio between chi-square and degrees of freedom. It is concluded that the "Individual Lifestyle Profile" scale in times of social distancing has shown satisfactory internal consistency and factor structure to guide the assessment of lifestyle (individual or groups) and interventions to promote healthy lifestyles

RESUMO

Os objetivos do estudo foram estimar o nível de confiabilidade e validade fatorial da escala "Perfil do Estilo de Vida Individual " em tempos de distanciamento social, por meio da análise fatorial confirmatória (AFC). Para tanto, a escala "Perfil do Estilo de Vida Individual " em tempos de distanciamento social foi empregada em um estudo realizado com amostras de estudantes e servidores de instituições de ensino superior de diferen-tes regiões brasileiras. A amostra final correspondeu a 4.694 adultos que responderam o formulário on-line. Para a avaliação de constructo foi realizada a análise de consistência interna via Alfa de Cronbach's (a) e correlação de Spearman. Empregou-se a AFC para testar a estrutura fatorial hipotética da escala. A con-sistência interna geral foi de a de 0,778 e houve correlações significativas, porém, inferiores a ± 0,799 para os itens dos mesmos constructos e ± 0,499 entre os itens de constructos diferentes. Na AFC, após ajustes na estrutura do modelo, ocorreu a adequação para todos os indicadores (Goodness-of-fit Index 0,976; Compa-rative Fit Index 0,937; Normalized Fit Indices 0,932; Tucker-Lewis Indices 0,914; Root Mean Square Error of Approximation 0,047; Root Mean-Square Residual 0,031; Standardized Root Mean-Square Residual 0,0337), com a exceção para os valores de p do Qui-quadrado e razão entre Qui-quadrado e graus de liberdade. Conclui-se que a escala "Perfil do Estilo de Vida Individual " em tempos de distanciamento social, mostrou consistência interna e estrutura fatorial satisfatórias para orientar a avaliação do estilo de vida (individual ou de grupos) e as intervenções para promover estilos de vida saudáveis