Validade e reprodutibilidade de inquérito telefônico de atividade física no Brasil

Abstract

Introduction: Physical activity in Brazil is assessed by the Telephone-based Risk Factor Surveillance System for Chronic Diseases (VIGITEL). Objectives: To evaluate the reliability and concurrent validity of VIGITEL physical activity indicators. Methods: For the reliability study, 305 individuals responded to VIGITEL interviews, which were repeated with intervals of 7 -15 days, in Belo Horizonte, 2013. The evaluated indicators included "sufficiently active on leisure time," "active in transportation," "inactive in four domains of physical activity (leisure, work, transportation, and housework)," and "watching TV for long periods." Kappa coefficient (k) was used to measure agreement between both interviews. For concurrent validity assessment, the same subjects also responded to the Global Physical Activity Questionnaire (GPAQ), used as reference method for comparison of VIGITEL indicators. Comparison was assessed by measures of sensitivity, specificity, positive (PPV), and negative predictive values (NPV). Results: Reliability study showed substantial agreement for active individuals in leisure time (k = 0.70) and inactive individuals (k = 0.64). The agreement of watching TV for long periods was moderate (k = 0.56) and the activeness in transportation showed fair agreement (k = 0.35). In comparison to the reference method, sensitivity ranged from 54.8 to 67.7 in frequency of inactive, active in leisure time and work. Transportation domain was represented by 11.9 of sensitivity. Specificity ranged from 72.0 to 91.2 among four domains of physical activity and inactive. Conclusion: Physical activity questionnaire used by the surveillance system seems to be reliable in all domains, except in transportation questions. VIGITEL was considered comparable to GPAQ in most aspects of physical activity evaluation.

Limitação do uso da voz na docência e a prática de atividade física no lazer: Estudo Educatel, Brasil, 2015/2016

“…Self-reported data are usually used in large surveys of health conditions and lifestyles 42 due to the ease and low cost of obtaining them from large population samples 43 . Additionally, all investigations carried out up to the present moment have found good validity and reproducibility of the physical activity indicators (based on self-referred information obtained through a phone survey) 29,44 .…”

“…One aspect of the study worth emphasizing is its national scope and representativity of the population of Basic Education teachers in Brazil. We highlight that interpretations and comparability of scientific evidence must be cautious due to the use of different indicators for measuring physical activity 29 . The methodological design we used indicates the study's internal and external validity.…”

“…According to the World Health Organization (WHO), an adult individual (≥ 18 years) needs at least 150 minutes of moderate intensity physical activity or 75 minutes of vigorous physical activity per week (with a minimum uninterrupted duration of 10 minutes) in order to experience health benefits and effect prevention against chronic non-communicable diseases 27 . Based on that recommendation, the Risk and Protective Factors Surveillance System for Chronic Non-Comunicable Diseases Through Telephone Interview (VIGITEL, in Portuguese) has used, since 2011, the indicator of sufficient leisure-time physical activity (≥ 150 minutes/week) 28 , with good reproducibility and sufficient accuracy 29 . This system's questions regarding physical activity were used in the Educatel Study questionnaire (Box 1).…”

Understanding the contribution of public- and restricted-access places to overall and domain-specific physical activity among Mexican adults: A cross-sectional study

“…GPAQ is comprised of 19 questions measuring work-related, transport-related and leisure-time PA. This instrument has moderate to fair validity and good reliability across international and Latin American populations [11][12][13][14]. Data were processed in accordance to the GPAQ Analysis guide [15].…”

Prevalence and Risk Factors for Self-Report Diabetes Mellitus: A Population-Based Study

“…For each of these domains evaluated, physical activity practice scores were constructed by multiplying the weekly frequency by the duration time on the days the activity was performed. These questions follow the Vigitel questionnaire model, which assesses physical activity practice in leisure, work, and commuting, through a set of questions already used in international surveys and questionnaires used in the area (such as the International Physical Activity Questionnaire) [ 27 , 28 ]. In the present article, the participant who practiced less than 150 min per week of physical activity was considered physically inactive, considering the sum of the scores (in minutes) of AFL, AFD, and AFT [ 27 ].…”