Table 3.

Estimates of multivariate linear regression model predicting log₁₀(HDL-C) as a function of sex, age, age², ethnicity, SES and BMI for each survey

HDL-C	1999–2000 (n = 6386)		2001–02 (n = 7485)
	Estimate (95% CI)	P-value	Estimate (95% CI)	P-value
Sex (vs male)	0.068 (0.059–0.077)	3 × 10−5	0.076 (0.066–0.087)	9 × 10−6
Age (10 years)
Age	0.02 (0.0082–0.032)	0.009	0.027 (0.018–0.035)	4 × 10−4
Age2	−0.00012 (−0.00022 to −1.6 × 10−5)	0.03	−0.00018 (−0.00027 to −8.5 × 10−5)	0.004
Ethnicity (vs White)
Black	0.047 (0.03–0.064)	0.002	0.048 (0.034–0.061)	3 × 10−4
Mexican–American	0.016 (−0.0019 to 0.034)	0.07	0.0067 (−0.0022 to 0.016)	0.1
Other Hispanic	−0.016 (−0.039 to 0.0069)	0.1	−0.0039 (−0.028 to 0.02)	0.7
Other	0.0073 (−0.027 to 0.042)	0.6	0.0056 (−0.018 to 0.029)	0.6
SES (vs high tertile)
SES (medium)	−0.0054 (−0.021 to 0.01)	0.4	−0.017 (−0.034 to 0.00065)	0.06
SES (low)	−0.018 (−0.032 to −0.0035)	0.03	−0.03 (−0.048 to −0.012)	0.008
BMI (10 U)	−0.06 (−0.069 to −0.05)	6 × 10−5	−0.063 (−0.071 to −0.056)	4 × 10−6

	2005–06 (n = 7278)		Validation: 2003–04 (n = 6969)
Sex × (vs male)	0.075 (0.063–0.086)	2 × 10−5	0.078 (0.067–0.088)	8 × 10−6
Age (10 years)
Age	0.016 (0.0065–0.026)	0.008	0.017 (0.0084–0.026)	0.004
Age2	−1e−04 (−0.00022 to 1.3 × 10−5)	0.07	−1e−04 (−0.00019 to −1.3 × 10−5)	0.03
Ethnicity (vs White)
Black	0.042 (0.026 to –0.058)	0.001	0.041 (0.031–0.05)	1 × 10−4
Mexican–American	−0.00017 (−0.011 to 0.011)	1	−0.0048 (−0.019 to 0.0088)	0.4
Other Hispanic	0.0048 (−0.015 to 0.025)	0.6	−0.008 (−0.035 to 0.019)	0.5
Other	−0.0028 (−0.023 to 0.018)	0.7	−0.0039 (−0.033 to 0.025)	0.7
SES (vs high tertile)
SES (medium)	−0.012 (−0.022 to −0.003)	0.02	−0.0098 (−0.019 to −0.00066)	0.04
SES (low)	−0.023 (−0.035 to −0.012)	0.003	−0.019 (−0.03 to −0.0076)	0.008
BMI (10 U)	−0.061 (−0.07 to −0.053)	9 × 10−6	−0.058 (−0.069 to −0.047)	4 × 10−5

95% CI: 95% confidence interval.