Table 2.

Clinical performance of cognitive screening tools for predicting delirium

Tool	RR (95% CI)	Sn (95% CI)	Sp (95% CI)	LR+ (95% CI)	LR− (95% CI)
D=(MC)2 ≥2	2.5 (1.2, 5.5)	0.30 (0.12, 0.49)	0.88 (0.82, 0.93)	2.5 (1.2, 5.3)	0.79 (0.60, 0.94)
AD8 ≥2	2.4 (1.1, 5.1)	0.39 (0.19, 0.59)	0.82 (0.76, 0.88)	2.2 (1.2, 4.1)	0.74 (0.53, 0.90)
MMSE ≤24	5.5 (2.7, 11.1)	0.52 (0.32, 0.73)	0.89 (0.84, 0.94)	4.8 (2.6, 9.0)	0.54 (0.35, 0.76)
Mini-cog ≤2	2.7 (1.3, 5.7)	0.52 (0.32, 0.73)	0.75 (0.68, 0.82)	2.1 (1.3, 3.4)	0.64 (0.41, 0.82)
MMSE ≤24 AND D=(MC)2 ≥2	4.1 (1.8, 9.1)	0.17 (0.02, 0.33)	0.97 (0.94, 1.00)	6.0 (1.6, 22.5)	0.85 (0.70, 0.97)
MMSE ≤24 AND AD8 ≥2	2.7 (1.2, 6.3)	0.22 (0.05, 0.39)	0.93 (0.89, 0.97)	3.0 (1.1, 8.0)	0.84 (0.68, 0.96)
MMSE ≤24 OR D=(MC)2 ≥2	5.2 (2.4, 11.4)	0.65 (0.46, 0.85)	0.80 (0.73, 0.87)	3.2 (2.1, 5.1)	0.44 (0.25, 0.62)
MMSE ≤24 OR AD8 ≥2	5.8 (2.5, 13.1)	0.70 (0.51, 0.88)	0.78 (0.72, 0.85)	3.2 (2.1, 4.9)	0.39 (0.21, 0.55)

Sn = Sensitivity; Sp = Specificity; LR+ = positive likelihood ratio; LR− = negative likelihood ratio; RR = relative risk; CI = Confidence Interval