Abstract
To explore the change patterns, influencing factors and predictors of quality of life for 4 years in patients with Alzheimer's disease (AD). A total of 96 mild-moderate AD patients on combined therapies of medicine and recuperation were enrolled. Their clinical symptoms were graded by mini-mental state examination (MMSE), activity of daily living (ADL), global deterioration scale (GDS), neuropsychiatric inventory (NPI), Hamilton depression scale (HRSD), Hamilton anxiety scale (HAMA) and Pittsburgh sleep quality index (PQSI). And their qualities of life were evaluated by Quality of Life-Alzheimer's Disease (QOL-AD) at baseline and at the end of 1, 2, 3, 4 year. (1) During a 4-year follow-up, the scores of QOL-AD, MMSE, ADL, GDS, NPI, HRSD, HAMA and PQSI decreased markedly compared with baseline [(17.5±1.9), (12±3), (45±9), (5.2±0.8), (31±11), (20±6), (14±6), (14±4) vs (30.5±4.6), (21±4), (34±10), (3.3±0.9), (22±9), (18±6), (11±4), (12±4) respectively, t=25.31, 15.42, -7.16, -14.83, -5.56, -2.94, -4.45, -5.60, all P<0.01]. With the deterioration of AD, their qualities of life decreased significantly. (2) Spearman's correlation analysis showed that the scores of 4-year QOL-AD were correlated with the 4-year score changes of MMSE, ADL, GDS (r=0.344, 0.368, 0.213; P=0.002, 0.001, 0.047). (3) Multiple Logistic regression model showed that the baseline scores of NPI and HRSD were strong predictors of loss of quality of life (OR=1.697, 1.269; P=0.000, 0.006). And the area under the curve of receiver operating characteristic (ROC) of NPI and HRSD were 0.918 (95% CI: 0.844-0.991) and 0.878 (95% CI: 0.804-0.953) respectively. With the deterioration of AD, the quality of life decreases significantly and has correlations with the score changes of MMSE, ADL and GDS. High scores of NPI and HRSD are the important predictors for a loss of quality of life in AD patients. Early detection and timely interventions are necessary.
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