Table 4.

NRI and IDI Analysis Between GOLD 2023 ABE Group and GOLD 2017 ABCD Group in Mortality Prediction in COPD

Item	Estimate	95% Confidence Interval	P-value
Mortality (ABE VS ABCD)
IDI	−0.001	−0.002–0	0.010*
NRI (continuous)	−0.160	−0.239–0.064	<0.001*
Mortality (A1-E1 VS A1-D4)
IDI	0.001	0–0.003	0.100
NRI (continuous)	0.138	−0.065–0.197	0.269

Notes: * Statistical significance was determined at a P-value less than 0.05.

Abbreviations: NRI, net reclassification improvement; IDI, integrated discrimination improvement.