Table 1.

Description of the study population (means, standard deviations or frequencies).

Characteristics	Low (L)	Mid (M)	High (H)
	N=155	N=88	N=139
Age (years)*	15.6 ± 1.6	15.9 ± 1.8	15.3 ± 1.9
Race (% non-White	25.0	37.9	37.1
Sex (% Male)†	52.3	71.6	61.2
Height (cm)*	168.7 ± 9.1	171.8 ± 10.9	168.5 ± 9.9
Weight (kg)‡	76.7 ± 23.3	85.6 ± 29.0	84.8 ± 25.0
BMI (kg/m2)§	26.7 ± 7.0	28.7 ± 8.6	29.7 ± 7.9
BMI percentile (%)§	78.0 ± 41.5	80.6 ± 20.9	86.4 ± 20.9
Obese (%)§	36.1	46.6	54.7
Waist (cm)§	86.1 ± 18.8	89.1 ± 19.5	93.5 ± 19.7
Waist/height ratio||	0.5 ± 0.1	0.5 ± 0.1	0.6 ± 0.1
Total cholesterol (mg/dl)	152.0 ± 30.1	153.8 ±34.8	154.3 ± 33.2
LDL (mg/dl)	86.6 ± 26.9	90.7 ± 28.8	92.5 ± 28.4
HDL (mg/dl)#	47.4 ± 12.2	44.1 ± 11.5	43.3 ± 11.7
Triglycerides (mg/dl)	94.5 ± 62.2	99.4 ± 58.6	96.3 ± 48.8
Glucose (mg/dl)§	87.9 ± 8.0	89.5 ± 10.4	90.8 ± 8.2
Insulin (microIU/dl)§	17.9 ± 14.4	20.0 ± 14.4	23.8 ± 19.0
HOMA_IR§	3.98 ± 3.46	4.47 ± 3.31	5.48 ± 4.78
CRP (mg/dl)§	1.30 ± 1.69	1.39 ± 1.74	1.95 ± 2.16
Creatinine (mg/dl)**	0.72 ± 0.13	0.79 ± 0.18	0.72 ± 0.17
Uric acid (mg/dl)§	5.41 ± 1.63	5.81 ± 1.40	6.04 ± 1.52
Urine sodium/potassium ratio	4.09 ± 3.01	4.19 ± 3.16	3.99 ± 2.64

Bonferroni adjusted P≤0.04 for

^*H<M

^†M<L

^‡L<M&H

^§L< H

^||L&M<H

^#H<L

^**L&H<M

BMI, body mass index; CRP, C-reactive protein; DBP, diastolic blood pressure; HDL, high density lipoprotein; HR, heart rate; K1, Korotkoff sound 1; K5, Korotkoff sound 5; LDL, low density lipoprotein; MAP, mean arterial pressure; SBP, systolic blood pressure.