The clinical application of the scenery picture memory test combined with clock drawing test and clock reading test to screen the cognitive impairment patients in the elderly

Objective To investigate the sensitivity and specificity of Scenery Picture Memory Test and combined with the the Clock Drawing Test(CDT) and clock reading(CRT) to screen the mild cognitive impairment and AD patients in the elderly. Methods All of the subjects were recruited from the outpatient department of the Third Hospital of Hangzhou and the memory disorder clinic.All the subjects were given MMSE,SPMT,CDT and CRT.According to the test Results The 182 subjects were divided into normal group,mild cognitive impairment group,early AD group and progressed AD group.In the 4 groups,with 45(24.73%)of the dementia diagnosed with MCI,38(13.74%)were early AD,25(13.74%) were diagnosed with moderate to severe AD,74(29.38%) were normal health.Results:The sensitivity and specificity of SPMT in patients with MCI were 76.25% & 79.83%,compared with CDT(41.06%,77.65%)and CRT(36.03%,57.80%),it is significantly higher than the latter.However,there was no significant difference in the sensitivity and specificity among SPMT(82.33%,86.44%),CDT(72.0%,79.83%)and CRT(49.23%,85.62%) in diagnosis of early AD(P>0.05).The similar results were observed in the progressed AD group,the sensitivity and specificity of SPMT was 77.85% and 84.29%,CDT was 77.14%,77.85%,and CRT was 54.30%,59.90%,respectively. Conclusion SPMT can be used as an effective approach to screen the mild and early cognitive impairment in the elderly.