• Bigina N R Ginos, Trudy Voortman, and M Arfan Ikram.
• Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands.
• J Urban Health. 2024 Dec 1; 101 (6): 120012061200-1206.

AbstractStudies investigating the potential health effects of floor of residence have reported conflicting results. In the Rotterdam Study, we examined associations between floor and mortality among elderly residents of a neighborhood of Rotterdam, the Netherlands. Participants who were high-rise residents at baseline (n = 2330) were followed for 10 years, until loss to follow-up or death (N = 602). Cox proportional hazard models revealed nonlinear association of floor of residence with mortality, albeit not statistically significant across all floor categories. Compared to floors 13 and above, adjusted hazard ratios [95% confidence interval] were: 1.31 [0.89-1.95] (floors 1-2), 1.52 [1.04-2.22] (floors 3-4), 1.07 [0.73-1.57] (floors 5-6), 1.12 [0.76-1.66] (floors 7-8), 1.45 [0.96-2.18] (floors 9-10), and 1.04 [0.69-1.58] (floors 11-12). In this prospective population-based cohort of elderly adults in Rotterdam, the Netherlands, a nonlinear association was observed between floor level of residence and mortality, with stronger associations observed at lower floors compared to the highest floors.© 2024. The New York Academy of Medicine.

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