Fig. 5From: Using historical data to facilitate clinical prevention trials in Alzheimer disease? An analysis of longitudinal MCI (mild cognitive impairment) data setsHazard ratios of five Cox proportional hazard regression models for each study. For education the hazard ratio for progression to dementia is shown for an increase of 4 years, for age, it is shown for an increase of 10 years, for gender, it is for females relative to malesBack to article page