Table 2.

AUC and cutoff points of CASI

Group	AUC	95% CI	Cutoff	Sensitivity	Specificity
Dementia vs. No dementia
Age (year)
< 75	0.92	0.91–0.92	72/73	0.83	0.84
≥ 75	0.89	0.89–0.90	55/56	0.82	0.80
Education (year)
0	0.90	0.89–0.92	47/48	0.84	0.81
< 6	0.88	0.87–0.90	55/56	0.84	0.77
≥ 6	0.93	0.92–0.94	72/73	0.84	0.86
Younger-illiterate	0.89	0.86–0.92	50/51	0.88	0.76
Younger-low education	0.87	0.83–0.91	60/61	0.83	0.76
Younger-high education	0.92	0.91–0.94	76/77	0.84	0.86
Older-illiterate	0.90	0.89–0.91	42/43	0.88	0.75
Older-low education	0.87	0.85–0.90	53/54	0.85	0.75
Older-high education	0.91	0.89–0.72	63/64	0.87	0.78
CU vs. MCI
Age
< 75	0.69	0.67–0.71	81/82	0.78	0.52
≥ 75	0.73	0.71–0.76	72/73	0.72	0.66
Education
0	0.74	0.70–0.78	64/65	0.67	0.71
< 6	0.73	0.68–0.78	68/69	0.78	0.62
≥ 6	0.71	0.69–0.72	81/82	0.78	0.54
Younger-illiterate	0.72	0.65–0.80	64/65	0.81	0.56
Younger-low education	0.69	0.61–0.76	68/69	0.84	0.47
Younger-high education	0.67	0.65–0.70	83/84	0.78	0.48
Older-illiterate	0.73	0.68–0.78	62/63	0.67	0.68
Older-low education	0.75	0.68–0.82	67/68	0.74	0.69
Older-high education	0.73	0.70–0.77	77/78	0.76	0.62

Younger: < 75 years; Older: ≥ 75 years; Low education: < 6 years; High education: ≥ 6 years. All p values < .001. Abbreviations. AUC Area under the curve, CASI Cognitive assessment screening instrument, CI Confidence interval