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Overadjustment – an important bias hiding in plain sight

International Journal of Epidemiology Blog

For example, overadjustment may occur if a researcher adjusts for health-related behaviours when trying to estimate the total effect of education on mortality (Figure 1). Dr Saman Khalatbari-Soltani ( @saamaankh ) is a social epidemiologist and senior lecturer in population health at the University of Sydney School of Public Health and CEPAR.