Table 2.

Comparison of NT-proBNP levels, CHADS_2, CHA₂DS₂VAS_C, and model based on NT-proBNP levels in the evaluation of all-cause mortality

	C-statistic	95% CI	P	Z	P
NT-proBNP levels	0.77	0.70–0.85	< 0.001
CHADS2	0.64	0.55–0.73	0.002	2.47	0.013a
CHA2DS2VASC	0.63	0.55–0.72	0.045	2.62	0.009b
CHADS2 + NT-proBNP levels	0.78	0.71–0.85	< 0.001	3.63	< 0.001c
CHA2DS2VASC + NT-proBNP levels	0.78	0.70–0.85	< 0.001	3.31	< 0.001d
Model based on NT-proBNP levels	0.89	0.84–0.94	< 0.001	5.25	< 0.001e
				5.31	< 0.001f
				3.02	0.003g
				3.30	0.001h

Notes: ^aP value was drawn from comparison between CHADS₂ and NT-proBNP levels; ^bP value was drawn from comparison between CHA₂DS₂VAS_C and NT-proBNP levels; ^cP value was drawn from comparison between CHADS₂ + NT-proBNP levels and CHADS₂; ^dP value was drawn from comparison between CHA₂DS₂VAS_C + NT-proBNP levels and CHA₂DS₂VAS_C; ^eP value was drawn from comparison of model based on NT-proBNP levels with CHADS₂; ^fP value was drawn from comparison of model based on NT-proBNP levels with CHA₂DS₂VAS_C; ^gP value was drawn from comparison of model based on NT-proBNP levels with CHA₂DS₂ + NT-proBNP levels; ^hP value was drawn from comparison of model based on NT-proBNP levels with CHA₂DS₂VAS_C + NT-proBNP levels

Abbreviations: NT-proBNP N-terminal pro-brain natriuretic peptide, CI confidence interval