Skip to main content
. Author manuscript; available in PMC: 2015 Jul 10.
Published in final edited form as: Stat Med. 2014 Apr 9;33(15):2577–2584. doi: 10.1002/sim.6165

Table 5.

Discrimination Measures for Three Methods of adding a novel biomarker for predicting AF risk

Model CRP BNP
Method 1
n=3120		 Method 2
n=3120		 Method 3
n=3120		 Method 1
n=3120		 Method 2
n=3120		 Method 3
n=3120
C before adding biomarker 0.7789 0.7789 0.7535 0.7789 0.7789 0.7535
C after adding biomarker 0.7832 0.7826 0.7657 0.8032 0.8020 0.7977
Difference in C-statistic 0.0043 0.0035 0.0122 0.0243 0.0231 0.0442
P-value for difference 0.2184 0.2777 0.0225 0.0018 0.0015 0.00003
NRI 0.1690 0.2148 0.2572 0.4244 0.3581 0.4506
IDI 0.0025 0.0018 0.0035 0.0172 0.0161 0.0249