Schuch, H.Peres, K.Demarco, F.Horta, B.Gigante, D.Peres, M.Do, L.2019-07-122019-07-122018Journal of Clinical Periodontology, 2018; 45(4):394-4030303-69791600-051Xhttp://hdl.handle.net/2440/120002Aims: To quantify the impact of life course income trajectories on periodontitis in adulthood. Materials and Methods: Data from the 1982 Pelotas Birth Cohort Study, Brazil, were used. Information on family income was collected at birth and ages 15, 19, 23 and 30 years. Group-based trajectory modelling was used to identify income trajectories. Periodontal measures were assessed through clinical examination at age 31. Log-Poisson regression models were used to estimate prevalence ratios (PRs) of any and moderate/severe periodontitis, as outcomes. Results: Prevalence of any periodontitis and moderate/severe periodontitis was 37.3% and 14.3% (n = 539). Income trajectories were associated with prevalence of moderate/severe periodontitis. Adjusted PR in participants in low and variable income trajectory was 2.1 times higher than in participants in stable high-income trajectory. The unadjusted association between income trajectories and prevalence of any periodontitis was explained by the inclusion of behavioural and clinical variables in the model. Conclusions: Low and variable life course income increased the prevalence of moderate/severe periodontitis at age 31 years. The findings may inform programmes in identifying and targeting potentially at-risk groups during the life course to prevent periodontitis.en© 2017 John Wiley & Sons A/S. Published by John Wiley & Sons LtdCohort studies; disparities; health status; periodontal disease; social mobility; socioeconomic factorsJournal article003007863010.1111/jcpe.128450004284207000012-s2.0-85043464453389326Schuch, H. [0000-0001-9932-9698]Peres, K. [0000-0002-1730-2123]Peres, M. [0000-0002-8329-2808]Do, L. [0000-0003-3684-9949]