Table 3.

Predictive accuracy of the NCBI risk score for age-specific lipid levels.

Age	Previous measurement?	HDL-C		LDL-C		TC		TG
		ΔR2	p	ΔR2	p	ΔR2	p	ΔR2	p
10	No	0.025	8.63 × 10−4	0.060	9.71 × 10−7	0.049	3.30 × 10−6	0.010	0.016
20		0.018	5.49 × 10−3	0.074	5.32 × 10−8	0.088	3.05 × 10−9	0.055	8.75 × 10−6
30		0.037	7.15 × 10−5	0.063	7.60 × 10−7	0.044	2.96 × 10−5	0.026	4.28 × 10−4
40		0.017	3.91 × 10−3	0.037	2.47 × 10−4	0.044	5.38 × 10−5	0.048	3.49 × 10−5
20	Yes	–	0.116	0.013	1.31 × 10−3	0.022	8.12 × 10−5	0.064	4.98 × 10−6
30		0.025	3.80 × 10−4	0.008	0.016	–	0.092	0.009	0.023
40		–	0.740	–	0.503	0.006	0.039	0.025	8.63 × 10−4

ΔR² represents the increase in R² over a non-genetic model. The model was assessed when the previous lipid measurement was not controlled for as a covariate (No), and when it was (Yes).