Table 1.

Description of cohort, n = 485

DescriptorData
Age in years at first test
  Mean (SD)72.1 (6.8)
  Range60.0–93.2
Sex
  Female, %57.5
Time between tests in days
  Mean (SD)153 (107)
  Median (IQR)112.5 (100–147)
Ethnicity, n
  White449
  Mixed ethnicity4
  Black1
  • IQR = interquartile range. SD = standard deviation.