Table 3.

Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and false positive and negative values for the Quick Mild Cognitive Impairment (Qmci) screen and Montreal Cognitive Assessment (MoCA), based upon cut-off scores for cognitive impairment (MCI and dementia), according to age and education (CI = 95% Confidence Interval)

Cognitive	Age	Edu	Median	N = X	Cut-off	Sensitivity	Specificity	PPV	NPV	False	False
Screen			Score		score	(95% CI)	(95% CI)	(95% CI)	(95% CI)	Positive	Negative
			(IQR)							(95% CI)	(95% CI)
			Cognitive
			Impairment
			Controls
Qmci	>75	<12	42 (50-26 = 24)	146/170 (86%)		97%	75%	96%	78%	4%	22%
			70 (75-63 = 12)			(92–99)	(53–89)	(91–98)	(56–92)	(2–7)	(8–44)
	>75	≥12	47 (58-37 = 21)	59/76 (78%)	<62	80%	94%	98%	55%	2%	49%
			78 (81-71 = 10)			(68–89)	(69–100)	(89–100)	(36–73)	(0–11)	(27–64)
	≤75	≥12	47 (62-33 = 29)	73/110 (66%)		74%	95%	97%	64%	3%	36%
			79 (84-75 = 9)			(63–83)	(80–99)	(87–99)	(50–76)	(1–13)	(24–50)
	≤75	<12	41 (48-22 = 26)	77/97 (79%)		99%	85%	96%	94%	4%	6%
			74.5 (82-65 = 17)			(92–100)	(61–96)	(89–99)	(71–100)	(1–11)	(0–29)
MoCA	>75	<12	14.5 (19-10 = 9)	146/170 (86%)		99%	37.5%	91%	82%	9%	18%
			25 (26-23 = 3)			(95–100)	(20–59)	(85–94)	(48–97)	(6–15)	(3–52)
	>75	≥12	19 (22-13 = 9)	59/76 (78%)	<26	91.5%	71%	91.5%	71%	8%	29%
			27 (29-25 = 4)			(81–97)	(44–89)	(81–97)	(44–89)	(3–19)	(11–56)
	≤75	≥12	18 (23-12 = 11)	73/110 (66%)		90%	73%	87%	79%	13%	21%
			27 (30-25 = 6)	(81–96)			(56–86)	(77–93)	(62–91)	(7–23)	(9–38)
	≤75	<12	16 (20-7 = 13)	77/97 (79%)		99%	50%	88%	91%	12%	9%
			25.5 (27-24 = 3)			(92–100)	(28–72)	(79–94)	(57–100)	(6–21)	(1–43)