Table 1. Baseline characteristics of participants (N=3290).

Total cholesterol (mg/dL)	Total	Low (≥75 to 191)	Middle (≥192 to <224)	High (≥225 to <704)	P-value
Sex (%)					<0.001
Male	50.608	64.537	50.229	37.534
Female	49.392	35.463	49.771	62.466
Age (%)					0.034
60-69 years	52.219	49.259	52.521	54.781
>= 70 years	47.781	50.741	47.479	45.219
Race/ethnicity (%)					0.167
Non-Hispanic White	76.869	74.537	79.560	76.497
Non-Hispanic Black	16.687	18.241	15.032	16.801
Other Hispanic	3.404	3.611	2.750	3.843
Other races - Including multi-racial	3.040	3.611	2.658	2.860
Physical activity (%)					0.074
Sedentary	33.818	34.394	31.938	35.094
Low	25.962	26.938	24.440	26.509
Moderate	15.228	14.115	15.482	16.038
High	24.992	24.553	28.140	22.358
Income to poverty ratio	2.443 ± 1.497	2.489 ± 1.502	2.498 ± 1.520	2.345 ± 1.466	0.038
Blood urea nitrogen (mg/dL)	16.410 ± 7.092	16.957 ± 8.111	16.091 ± 6.668	16.091 ± 6.668	0.008
Total protein (mg/dL)	7.316 ± 0.516	7.251 ± 0.527	7.338 ± 0.511	7.359 ± 0.504	<0.001
Serum uric acid (mg/dL)	5.656 ± 1.460	5.787 ± 1.511	5.619 ± 1.439	5.565 ± 1.421	0.001
Serum calcium (mg/dL)	9.469 ± 0.413	9.410 ± 0.418	9.460 ± 0.397	9.533 ± 0.415	<0.001
Body mass index	28.343 ± 5.459	28.711 ± 5.816	28.045 ± 5.156	28.280 ± 5.376	0.017
Lumber spine BMD (g/cm2)	1.014 ± 0.195	1.044 ± 0.204	1.044 ± 0.204	0.982 ± 0.181	<0.001

Note: Mean +/- standard deviation for: age, income to poverty, ratio blood urea nitrogen, total protein, serum uric acid, serum calcium, BMI, total days drink year, total BMD, head BMD, lumber spine BMD, lumber pelvis BMD. P value was calculated using weighted linear regression model. % For: age, sex, race/ethnicity, education, physical activity. P value was calculated using weighted chi-square test. Weighted by: Full sample mobile examination center exam weight.

BMD, Bone mineral density; BMI, Body mass index.