title: Moderating effect of gross family income on the association between demographic indicators and active commuting to work in Brazilian adults.
abstract: To investigate the moderating effect of gross family income on the association between demographic indicators and active commuting to work in Brazilian adults.
  
  
  
  Secondary analysis of the survey "Lifestyle and leisure habits of industry workers" (n=46,981), conducted in 24 Brazilian states (2006-2008). Self-reported information was collected with a previously tested questionnaire. Crude and adjusted logistic regression models were applied to analyze the association between sociodemographic variables (sex, age, marital status, number of children, education, country area and company size) and active commuting to work in different strata of gross family income. To test the moderating effect, an interaction analysis was applied.
  
  
  
  The proportion of active commuters among low-, medium- and high-income workers was 40.7% (95%CI:40.0%;41.5%), 27.0% (95%CI:26.3;27.6%) and 11.1%, (95%CI:10.5%;11.7%), respectively. The moderating effect of gross family income was confirmed. Men were more likely (OR:1.22 95%CI:1.12;1.32) to commute actively than women among low-income individuals. Active commuting was less likely among older workers in low-(OR30-39:0.90 95%CI: 0.83;0.98; OR≥40: 0.76 95%CI: 0.68;0.85) and medium-income strata (OR30-39:0.87 95%CI:0.80;0.95; OR≥40:0.84 95%CI:0.76;0.93) and among married individuals in high-income strata (OR:0.72 95%IC:0.61;0.84). Adults with lower education (ORhigh:10.80 95%CI:8.47;13.77), working in the south (ORhigh:1.93 95%CI:1.53;2.44) and in small companies (ORlow:2.50 95%CI:2.28;2.74) were more likely to commute actively; however, the magnitude of these associations differed at each income strata.
  
  
  
  There was an inverse association between gross family income and active commuting. Gross family income acts as a moderator of the association between demographic indicators and active commuting.
authors.affiliation: Federal University of Santa Catarina Sports Center, Research Centre in Physical Activity and Health, Campus Universitário Reitor João David Ferreira Lima, Centro de Desportos, Florianopolis, SC, CEP: 88040-900, Brazil. Electronic address: jaqui_aragoni@hotmail.com.
authors.forename: Jaqueline Aragoni
authors.initials: JA
authors.lastname: da Silva
authors.affiliation: Federal University of Santa Catarina Sports Center, Research Centre in Physical Activity and Health, Campus Universitário Reitor João David Ferreira Lima, Centro de Desportos, Florianopolis, SC, CEP: 88040-900, Brazil. Electronic address: kelly.samara@ufsc.br.
authors.forename: Kelly Samara
authors.initials: KS
authors.lastname: da Silva
authors.affiliation: Federal University of Santa Catarina Sports Center, Research Centre in Physical Activity and Health, Campus Universitário Reitor João David Ferreira Lima, Centro de Desportos, Florianopolis, SC, CEP: 88040-900, Brazil. Electronic address: gfdelduca@gmail.com.
authors.forename: Giovani Firpo
authors.initials: GF
authors.lastname: Del Duca
authors.affiliation: Federal University of Santa Catarina Sports Center, Research Centre in Physical Activity and Health, Campus Universitário Reitor João David Ferreira Lima, Centro de Desportos, Florianopolis, SC, CEP: 88040-900, Brazil. Electronic address: prisantos.personal@gmail.com.
authors.forename: Priscila Cristina
authors.initials: PC
authors.lastname: Dos Santos
authors.affiliation: Federal University of Santa Catarina Sports Center, Research Centre in Physical Activity and Health, Campus Universitário Reitor João David Ferreira Lima, Centro de Desportos, Florianopolis, SC, CEP: 88040-900, Brazil. Electronic address: sofiawolker@gmail.com.
authors.forename: Sofia
authors.initials: S
authors.lastname: Wolker
authors.affiliation: University of Pernambuco, Research Group in lifestyle and health, Rua Arnóbio Marques, 310, Santo Amaro, Recife, PE, CEP: 50100-130, Brazil. Electronic address: elusaoliver@hotmail.com.
authors.forename: Elusa Santina Antunes
authors.initials: ESA
authors.lastname: de Oliveira
authors.affiliation: University of Pernambuco, Research Group in lifestyle and health, Rua Arnóbio Marques, 310, Santo Amaro, Recife, PE, CEP: 50100-130, Brazil. Electronic address: maurovgb@gmail.com.
authors.forename: Mauro Virgílio Gomes
authors.initials: MVG
authors.lastname: de Barros
authors.affiliation: Federal University of Santa Catarina Sports Center, Research Centre in Physical Activity and Health, Campus Universitário Reitor João David Ferreira Lima, Centro de Desportos, Florianopolis, SC, CEP: 88040-900, Brazil. Electronic address: markus.nahas@ufsc.br.
authors.forename: Markus Vinicius
authors.initials: MV
authors.lastname: Nahas
mesh_terms: D000328:Adult; D001938:Brazil; D003430:Cross-Sectional Studies; D004651:Employment; D005260:Female; D006801:Humans; D007182:Income / Q000706:statistics & numerical data*; D008297:Male; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014186:Transportation / Q000706:statistics & numerical data*
keywords: Active commuting; Moderator variable; Socioeconomic factors; Workers