Impact of impairment in instrumental activities of daily living and mild cognitive impairment on time to incident dementia: results of the Leipzig Longitudinal Study of the Aged.
Standard
Impact of impairment in instrumental activities of daily living and mild cognitive impairment on time to incident dementia: results of the Leipzig Longitudinal Study of the Aged. / Luck, T; Luppa, M; Angermeyer, M C; Villringer, A; König, Hans-Helmut; Riedel-Heller, S G.
In: PSYCHOL MED, Vol. 41, 2011, p. 1087-1097.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Impact of impairment in instrumental activities of daily living and mild cognitive impairment on time to incident dementia: results of the Leipzig Longitudinal Study of the Aged.
AU - Luck, T
AU - Luppa, M
AU - Angermeyer, M C
AU - Villringer, A
AU - König, Hans-Helmut
AU - Riedel-Heller, S G
PY - 2011
Y1 - 2011
N2 - BACKGROUND: Early diagnosis of dementia requires knowledge about associated predictors. The aim of this study was to determine the impact of mild cognitive impairment (MCI) and impairment in instrumental activities of daily living (IADL) on the time to an incident dementia diagnosis.MethodData were derived from the Leipzig Longitudinal Study of the Aged (LEILA75+), a population-based study of individuals aged 75 years. Kaplan-Meier survival analysis was used to determine time to incident dementia. Cox proportional hazards models were applied to determine the impact of MCI and IADL impairment on the time to incident dementia. RESULTS: In total, 180 (22.0%) of 819 initially dementia-free subjects developed dementia by the end of the study. Mean time to incident dementia was 6.7 years [95% confidence interval (CI) 6.5-6.9]. MCI combined with IADL impairment was associated with a higher conversion rate to dementia, a shorter time to clinically manifest diagnosis and a lower chance of reversibility to cognitive normal. The highest risk for a shorter time to incident dementia was found for amnestic MCI combined with IADL impairment. The mean time to incident dementia was 3.7 years (95% CI 2.9-4.4) and thus half as long as in subjects without MCI and IADL impairment. CONCLUSIONS: Subjects with MCI and IADL impairment constitute a high-risk population for future dementia. The consideration of both - MCI and IADL impairment - might help to improve the prediction of dementia.
AB - BACKGROUND: Early diagnosis of dementia requires knowledge about associated predictors. The aim of this study was to determine the impact of mild cognitive impairment (MCI) and impairment in instrumental activities of daily living (IADL) on the time to an incident dementia diagnosis.MethodData were derived from the Leipzig Longitudinal Study of the Aged (LEILA75+), a population-based study of individuals aged 75 years. Kaplan-Meier survival analysis was used to determine time to incident dementia. Cox proportional hazards models were applied to determine the impact of MCI and IADL impairment on the time to incident dementia. RESULTS: In total, 180 (22.0%) of 819 initially dementia-free subjects developed dementia by the end of the study. Mean time to incident dementia was 6.7 years [95% confidence interval (CI) 6.5-6.9]. MCI combined with IADL impairment was associated with a higher conversion rate to dementia, a shorter time to clinically manifest diagnosis and a lower chance of reversibility to cognitive normal. The highest risk for a shorter time to incident dementia was found for amnestic MCI combined with IADL impairment. The mean time to incident dementia was 3.7 years (95% CI 2.9-4.4) and thus half as long as in subjects without MCI and IADL impairment. CONCLUSIONS: Subjects with MCI and IADL impairment constitute a high-risk population for future dementia. The consideration of both - MCI and IADL impairment - might help to improve the prediction of dementia.
M3 - SCORING: Zeitschriftenaufsatz
VL - 41
SP - 1087
EP - 1097
JO - PSYCHOL MED
JF - PSYCHOL MED
SN - 0033-2917
ER -