본 연구는 K-BNT와 SVLT의 지연회상검사의 동시 사용이 알쯔하이머형 치매 환자를 진단하는 데 있어 유용한 도구인지를 알아보기 위하여 K-BNT와 SVLT의 지연회상검사에 대한 민감도와 특이도를 구하였다. 두검사 모두에서 민감도와 특이도는 다른 선별 검사들과 유사한 수준이었고, 두 검사를 동시에 사용하는 경우에는 위양성률이 0%인 것으로 나타났다. 알쯔하이머형 치매를 진단하는 데 있어서 K-BNT와 SVLT의 지연회상 검사의 동시 사용이 위양성률이 낮으면서도 효과적인 선별 검사 도구가 될 수 있음을 보여준다.
Objectives : The purpose of this study was to establish that Korean Boston Naming Test(K-BNT) and the delayed recall test of Seoul Verbal Learning Test(SVLT) applied together may be useful for clinician to diagnose dementia of the Alzheimer’s type(DAT). Methods : We compared the results of K-BNT and the delayed recall test of SVLT between DAT group(N=30) and control group(N=30) without any cognitive impairment. Also, we made Receiver Operating Characteristic Curve(ROC curve) of K-BNT and the delayed recall test of SVLT for the two groups. Results : The scores of K-BNT and the delayed recall test of SVLT of patients group with DAT were significantly lower than those of control group. K-BNT and the delayed recall test of SVLT showed the positive correlation with KMMSE. The cut-off values of K-BNT and the delayed recall test of SVLT determined by ROC curve were z=-0.58 score (28.10‰) and z=-1.35 score(8.86‰), respectively. The sensitivities and specificities of K-BNT and the delayed recall of SVLT in order to diagnose DAT were 63.3% vs 90.0% and 73.0% vs 73.0%, respectively. When these two tests applied together, the sensitivity and specificity were 50.0% and 100%. Conclusion : This study is suggested that the use of these two tests at the same time may be the useful screening test to diagnose DAT.