Table 1. Characteristics of the overall study population and remaining sample after exclusions, among youth ages 6-17 years old, NHANES 2003-2006.
| Overall1 (n =5,607) | Analytic sample2 (n =3,984) | p-value3 | |
|---|---|---|---|
| Age, years, Mean ± SE | 12.17 ± 0.06 | 11.48 ± 0.09 | 0.01 |
| Gender, n (%) | 0.08 | ||
| Male | 2,804 (51.16) | 2,001 (51.00) | |
| Female | 2,803 (48.84) | 1,983 (49.00) | |
| Race/Ethnicity, n (%) | 0.02 | ||
| Non-Hispanic White | 1,469 (61.16) | 1,007 (60.15) | |
| Non-Hispanic Black | 1,902 (14.82) | 1,332 (14.74) | |
| Mexican American | 1,776 (12.44) | 1,331 (13.33) | |
| Other | 460 (11.58) | 314 (11.79) | |
| Poverty to income ratio, Mean ± SE | 2.13 ± 0.06 | 2.64 ± 0.08 | 0.3 |
| Accelerometer activity, Mean ± SE | |||
| % MVPA/day | 5.32 ± 0.09 | 5.32 ± 0.09 | 0.6 |
| % Sedentary/day | 51.40 ± 0.28 | 50.36 ± 0.33 | 0.9 |
| Counts per minute | 505.35 ± 5.43 | 516.35 ± 5.73 | 0.6 |
| Cardiovascular disease risk factors, Mean ± SE | |||
| Waist circumference (cm) | 74.72 ± 0.28 | 72.41 ± 0.42 | 0.6 |
| Systolic blood pressure (mmHg) | 106.28 ± 0.37 | 106.00 ± 0.37 | 0.01 |
| Diastolic blood pressure (mmHg) | 56.66 ± 0.46 | 56.67 ± 0.46 | 0.9 |
| HDL cholesterol (mg/dL) | 54.42 ± 0.30 | 54.19 ± 0.38 | 0.6 |
| LDL cholesterol (mg/dL) | 88.90 ± 0.60 | 87.85 ± 1.26 | 0.8 |
| Triglycerides (mg/dL) | 83.52 ± 1.37 | 87.39 ± 2.05 | 0.3 |
| Glucose, plasma (mg/dL) | 92.23 ± 0.46 | 91.90 ± 0.37 | 0.6 |
| Insulin (uU/mL) | 13.31 ± 0.38 | 11.64 ± 0.35 | 0.01 |
1
Particpants ages 6 to 17 years participating in the 2003-2006 NHANES survey.
2
Participants were excluded for the following reasons: did not have accelerometer data (n=577); accelerometer was not calibrated upon return (n=351); failed to wear accelerometer for ≥ 8 hours/day on ≥ 3 days (n-681); taking diabetic medication (n=8); had outlying values for fasting glucose or average intensity (n=6).
3
P-value test differences between the overall sample and analytic sample.