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Table 1 Demographics

From: Self-Administered Gerocognitive Examination: longitudinal cohort testing for the early detection of dementia conversion

  AD dementia (n = 220) MCI converter (n = 70) MCI converter MCI non-converter (n = 94) SCD (n = 40)
To AD dementia (n = 49) To other dementia (n = 21)
Age (years), mean (SD) and range 76.9 (8.5)
50–91
75.0 (6.7)
55–91
74.8 (6.1)
55–91
75.4 (8.0)
57–89
69.7 (9.8)a
50–89
69.30 (9.2)a
51–85
Follow-up duration (years), mean (SD) and range 2.8 (1.7)
0.5–7.7
4.0 (1.9)a
1.2–8.7
4.1 (1.9)
1.2–8.7
3.8 (2.0)
1.2–7.0
3.2 (1.9)
0.5–7.8
3.46 (2.0)
1.0–7.7
Education (years), mean (SD) and range 14.4 (3.0)b
4–20
15.7 (2.8)a
10–20
15.9 (2.7)
10–20
15.3 (3.1)
12–20
15.3 (2.6)
10–20
15.6 (2.6)
10–20
Female sex, N (%) 135 (61) 35 (50) 25 (51) 10 (48) 39 (42)c 16 (40)c
Caucasian race, N (%) 202 (92) 67 (96) 47 (96) 20 (95) 86 (92) 37 (93)
SAGE baseline, mean (SD) and range (maximum score 22) 11.0 (4.4)
2–22
16.5 (3.1)a
8–22
16.4 (3.1)
9–21
16.6 (3.2)
8–22
17.0 (3.3)a
7–22
19.6 (2.0)a
14–22
MMSE baseline, mean (SD) and range (maximum score 30) 22.1 (3.7)
9–30
26.0 (2.4)a
19–30
26.0 (2.3)
19–30
26.2 (2.8)
20–30
27.4 (1.9)a
21–30
28.5 (1.4)a
23–30
  1. Abbreviations: AD Alzheimer’s disease, MCI Mild cognitive impairment, MMSE Mini-Mental State Examination, SAGE Self-Administered Gerocognitive Examination, SCD Subjective cognitive decline, SD Standard deviation
  2. aMean significantly different from the AD mean, from Tukey HSD test in a comparison of AD, MCI converter, MCI non-converter, and SCD groups
  3. bEight missing
  4. cSignificantly different from the AD proportion from Pearson chi-square test with Bonferroni correction for three comparisons