[Validity of complex figure test in differentiation of Alzheimer's disease from non-dementia]
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Updated: May 10, 2026

The 4 Mountains Test: A Short Test of Spatial Memory with High Sensitivity for the Diagnosis of Pre-dementia Alzheimer's Disease
Published on: October 13, 2016
Xia Hong1, Zhen-xin Zhang, Li-yong Wu
1Department of Psychological Medicine,PUMC Hospital,CAMS and PUMC.
Objective:
To assess the validity of Complex Figure Test(CFT)in differentiating Alzheimer's disease(AD)from non-dementia.
Methods:
Using CFT,we tested 183 AD patients(AD group),1283 cognitively intact individuals(normal control group),and 134 individuals suffered from other diseases that could be easily confused with dementia(confused control group).
Results:
The CFT score was 38.7±0.2 in the normal control group,35.3±0.8 in confused control group,23.7±0.8 in mild AD group,and 13.2±1.1 in moderate AD group after adjusted for educational level,age,and sex(all P<0.05).With the 5(th) percentage of the overall score as cutoff point,this tool showed a sensitivity of 73.8% and a specificity of 93.8% in differentiating AD from non-dementia.
Conclusion:
CFT is a sensitive and specific tool in the differentiation of AD from non-dementia.
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