Table 3b. Lack of fit statistics due to excluding laboratory risk factors from the equation with pack-years, time since quitting and other risk factors (models 11 vs. 5).

Test	Value	Degrees of freedom	P
Likelihood ratio	56.4307	3	<0.0001

Difference between two correlated C	Estimate (SE)	95% CI	x2	P
	0.0173 (0.0039)	0.0096, 0.0250	19.3872	<0.0001

	Estimate	95% CI	Z	P
NRI	0.0662	0.0220, 0.1104	2.9248	0.0034
IDI	0.0149	0.0079, 0.0218	4.2177	<0.0001