Table 2.

Test Characteristics of 30-Day and 1-Year Surprise Questions for Predicting Mortality

	30-day SQ			1-year SQ
	30-day mortality			1-year mortality
	Dead	Alive	Total	Dead	Alive	Total
SQ + a	2 (0.5 %)	17 (4 %)	19	38 (10 %)	70 (19 %)	108
SQ-b	14 (4 %)	348 (91 %)	362	43 (12 %)	214 (59 %)	257
Total	16 (4 %)	365 (96 %)	381	81 (22 %)	284 (78 %)	365
Sensitivity and 95% CI	0.12 (0.02, 0.38)			0.47 (0.36, 0.58)
Specificity and 95% CI	0.95 (0.93, 0.97)			0.75 (0.70, 0.80)
Positive predictive value and 95% CI	0.11 (0.01, 0.33)			0.35 (0.26, 0.45)
Negative predictive value and 95% CI	0.96 (0.94, 0.98)			0.83 (0.78, 0.88)
Positive likelihood ratio and 95% CI	2.68 (0.68, 10.64)			1.90 (1.40, 2.59)
Negative likelihood ratio and 95% CI	0.92 (0.76, 1.11)			0.70 (0.57, 0.87)