TABLE 1.

Weighted characteristics of study samples based on obesity status.

	Non-obese (n = 7,907)	Obese (n = 15,808)	p-value
Total percent fat (%)	24.89 ± 5.89	36.71 ± 7.08	<0.01
Serum uric acid (μmol/L)	296.98 ± 75.70	325.33 ± 82.98	<0.01
Age (years)	34.41 ± 11.65	40.33 ± 11.51	<0.01
Blood urea nitrogen (mmol/L)	4.49 ± 1.56	4.47 ± 1.48	0.29
Cholesterol (mmol/L)	4.73 ± 0.97	5.16 ± 1.08	<0.01
Triglycerides (mmol/L)	1.24 ± 1.35	1.83 ± 1.73	<0.01
BMI (kg/m2)	22.99 ± 3.19	30.85 ± 6.28	<0.01
Ratio of family income to poverty	2.98 ± 1.69	3.00 ± 1.65	0.30
Energy intake (kcal)	2417.24 ± 1016.61	2171.35 ± 900.03	<0.01
Protein intake (g)	91.74 ± 44.16	83.42 ± 37.89	<0.01
Carbohydrate intake (g)	292.55 ± 134.04	259.98 ± 117.61	<0.01
Fat intake (g)	89.53 ± 44.87	83.92 ± 42.22	<0.01
Sex (%)			<0.01
Males	56.20	47.69
Females	43.80	52.31
Race (%)			<0.01
Hispanic	12.88	17.60
Non-Hispanic White	66.68	64.93
Non-Hispanic Black	12.44	10.64
Others	8.00	6.83
Education level (%)			0.93
Less than high school	15.79	15.84
High school and above	84.21	84.16
Smoking status (%)			0.09
Yes	45.42	44.22
No	54.58	55.78
Heavy alcohol consumption (%)			0.89
Yes	16.04	15.97
No	83.96	84.03
Hypertension (%)			<0.01
Yes	25.36	45.11
No	74.64	54.89
Diabetes (%)			<0.01
Yes	2.92	9.54
No	97.08	90.46
Weak/failing kidneys (%)			<0.01
Yes	2.68	2.12
No	97.32	97.88
Vigorous work activity (%)			<0.01
Yes	41.92	30.31
No	58.08	69.69
Prescription medication use (%)			<0.01
Yes	37.70	51.12
No	62.30	48.88

Mean ± SD for continuous variables and p-value was calculated by weighted linear regression model.% for categorical variables and p-value was calculated by weighted chi-square test.