N-terminal pro-brain natriuretic peptide levels had an independent and added ability in the evaluation of all-cause mortality in older Chinese patients with atrial fibrillation

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	0.013^a
CHA₂DS₂VAS_C	0.63	0.55–0.72	0.045	2.62	0.009^b
CHADS₂ + NT-proBNP levels	0.78	0.71–0.85	< 0.001	3.63	< 0.001^c
CHA₂DS₂VAS_C + NT-proBNP levels	0.78	0.70–0.85	< 0.001	3.31	< 0.001^d
Model based on NT-proBNP levels	0.89	0.84–0.94	< 0.001	5.25	< 0.001^e
				5.31	< 0.001^f
				3.02	0.003^g
				3.30	0.001^h

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

ISSN: 1471-2318