Table 3.

Weighted Negative Binomial Regression Results for AL by Sociodemographic Characteristics, NHANES, 1999–2008^a

Sociodemographic Characteristics (reference group)	Estimated Count Ratios^b (95% CI)
Age Centered (15.4 Years)	1.06 (1.05, 1.08)^***
Race/Ethnicity (Non-Hispanic White)
Non-Hispanic Black	1.17 (1.11, 1.23)^***
Mexican American	1.03 (0.96, 1.10)
Age Centered by Race and ethnicity (15.4 Years × Non-Hispanic White)
Age Centered × Non-Hispanic Black	0.98 (0.96, 1.00)^*
Age Centered × Mexican American	0.99 (0.97, 1.01)
Gender (Male)
Female	0.98 (0.94, 1.04)
Nativity Status (U.S.-born)
Foreign-born	0.81 (0.75, .88)^***
Household Representative Education (More than high school)
Less than high school	1.13 (1.05, 1.22)^**
High school grad/GED	1.07 (1.00, 1.14)^*
Family Income (≥$75,000)
<$20,000	1.18 (1.11, 1.26)^***
$20,000–$44,999	1.18 (1.10, 1.27)^***
$45,000–$74,999	1.12 (1.04, 1.20)^**
Intercept	2.00 (1.89, 2.12)^***

p≤ .05

^**

p≤ .01

^***

p ≤ .001

n=8,052; all analyses weighted.

Estimated Count Ratios are interpreted as: Holding all other variables in the model constant, each 1-unit change in the predictor variable is expected to change the estimated AL score by a factor of the respective count ratio relative to the reference category.