and health behavior variables together to the specific QOL
measure. Both models controlled for age, gender, race,
family size, marital status, education, and poverty index.
All descriptive and regression analyses took into account
the complex NHANES survey design, including stratification,
clustering, and unequal weighting. Hence, analyses
were performed in SAS survey procedures using the whole
NHANES data set with a subpopulation statement for
people 65 years and older