Table 2 Demographic and sample statistics.

From: The Dallas Lifespan Brain Study: A Comprehensive Adult Lifespan Data Set of Brain and Cognitive Aging

 

Epoch 1 (N = 464)

Epoch 2 (N = 338)

Epoch 3 (N = 224)

Age, y

58.31 (18.14)

62.45 (17.26)

65.07 (16.64)

Age Range, y

21–89

25–93

31–97

Interval to next epoch, y

3.93 (0.36)

4.92 (0.83)

Female/Male, n (% Female)

287/177 (61.9%)

216/121 (64.1%)

137/78 (63.7%)

Baseline Education, y

15.79 (2.29)

MMSE

28.39 (1.24)

29.04 (1.25)

29.14 (1.25)

APOE e4 carrier

102 (21.98%)

80 (12.67%)

 

Caucasian

395 (85.1%)

298 (88.4%)

200 (89.3%)

Black/African-American

27 (5.8%)

16 (4.7%)

5 (2.2%)

Asian American /Pacific Islander

14 (3%)

8 (2.4%)

6 (2.7%)

Native American

5 (1.1%)

4 (1.2%)

4 (1.8%)

Hispanic/Latino

25 (5.4%)

15 (4.5%)

13 (5.8%)

  1. Note. Age and the interval between epochs provided here are calculated based on the cognitive battery testing date. Similar metrics for the MRI and PET scanning sessions are available in the data set. Abbreviations: MMSE, Mini-Mental State Examination; SD, standard deviation; y, years.