Table 2

 Relative risk estimates (adjusted for age, sex, education) for institutionalisation, death, and development of dementia after 5 years, for subjects in each incident amnestic MCI subgroup compared to subjects with NCI

Diagnosis (no. of survivors with diagnostic data)
NCI (n = 287)MCI-1 (n = 9)MCI-2 (n = 10)MCI-3 (n = 20)MCI-4 (n = 21)
*Values in parentheses are 95% confidence intervals.
The proportions of various incident amnestic MCI subgroup survivors with no cognitive impairment (NCI), cognitive impairment, no dementia (CIND), and dementia after 5 years are shown.
RR of death*2.0 (0.7–5.5)1.8 (0.7–4.7)1.5 (0.7–3.3)1.5 (0.7–3.1)
RR of institutionalisation*1.1 (0.5–2.2)1.3 (0.8–2.1)1.3 (0.7–2.3)1.3 (0.8–2.0)
RR of dementia for survivors*38.7 (6.7–223.6)26.4 (5.6–124.9)6.6 (2.3–19.2)6.2 (2.2–17.8)
% NCI61.022.220.030.028.6
% CIND28.60.010.030.033.3
% Dementia10.477.870.040.038.1