Fig. 3
From: Older patients are still under-represented in clinical trials of Alzheimer’s disease
a Distribution in the 75–79 and 80–84 age classes. Data from clinical trials and the estimated number of patients with Alzheimer’s disease in the USA (source of prevalence data: [17, 18]). b Age distribution below and above age 80 years. Comparison of data from clinical trials and the estimated number of patients with Alzheimer’s disease in the USA (source of prevalence data: [17, 18]). AD, Alzheimer’s disease