Demographic characteristics of the 3 subsamplesa
| NC (n = 42; 16F/26M) | MCI (n = 73, 25F/48M) | AD (n = 38, 16F/22M) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| M | SD | Range | M | SD | Range | M | SD | Range | |
| Age | 75.5 | (5.4) | 62.2–84.7 | 74.5 | (7.0) | 55.5–88.9 | 76.2 | (7.5) | 58.8–88.1 |
| Education | 16.0 | (3.2) | 8–20 | 16.0 | (2.9) | 8–20 | 14.3 | (3.6) | 4–20 |
| MMSE | 29.1 | (1.0) | 26–30 | 27.0 | (1.7) | 24–30 | 23.8 | (2.0) | 20–26 |
| MMSE_c | −0.2 | (1.6) | −4–3 | −1.3 | (2.8) | −13–4 | −5.2 | (5.8) | −22–4 |
| CDR | 0.0 | (0.0) | 0–0 | 0.5 | (0.0) | 0.5–0.5 | 0.8 | (0.3) | 0.5–1.0 |
| CDR_c | 0.2 | (0.7) | −0.5–3.5 | 1.2 | (1.6) | −1.5–4.5 | 4.0 | (3.1) | 0–11 |
| LM-del | 12.0 | (3.6) | 6–22 | 4.1 | (2.7) | 0–8 | 1.1 | (2.0) | 0–8 |
| LM-del_c | 1.2 | (4.1) | −10–8 | 0 | (3.3) | −6–10 | −0.7 | (1.1) | −4–1 |
a The numbers refer to baseline data, with the exception of MMSE_c, CDR_c, and LM-del_c, which refer to change across 2 years (baseline score subtracted from score at 2-year follow-up). MMSE and LM-del change scores were available for 36 NC, 51 MCI, and 25 AD subjects. CDR-SB change scores were available for 34 NC, 49 MCI, and 25 AD.