Low health literacy predicts decline in physical function among older adults: findings from the LitCog cohort study
Samuel G Smith, Rachel O'Conor, Laura M Curtis, Katie Waite, Ian J Deary, Michael Paasche-Orlow, Michael S Wolf
J Epidemiol Community Health May 2015, 69 (5) 474-480; DOI: 10.1136/jech-2014-204915