| AD | Alzheimer Disease |
| ANOVA | Analysis of Variance |
| BMI | Body Mass Index |
| DSM-IV | Diagnostic and Statistical Manual of Mental Disorders, 4th edition |
| Hcy | Homocysteine |
| IQ | Intelligence Quotient |
| MCI | Mild Cognitive Impairment |
| MMSE | Mini Mental State Examination |
| NINCDS-ADRDA | National Institute of Neurological and Communicative Disorders and Stroke and Alzheimer Disease and Related Disorders Association |
| ORs | Odds Ratios |
| SD | Standard Deviations |
| WAIS-RC | Chinese version of the Wechsler Adult Intelligence Scale-Revised |
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