Table 2.
Descriptive statistics for measures and biomarkers of metabolic syndrome
| Measure or Biomarker | N | Mean | Median (Q1, Q3) |
|---|---|---|---|
| Glycosylated hemoglobin A1C (%) | 275 | 5.5 | 5.5 (5.4, 5.7) |
| Leptin (ng/ml)* | 271 | 1.6 | 0.9 (0.7, 1.6) |
| Adiponectin (μg/ml)* | 276 | 25.7 | 20.3 (9.9, 34.2) |
| Urinary 8-isoprostane (creatinine-adjusted) (ng/mg)* | 290 | 5.5 | 4.4 (2.8, 6.6) |
| Systolic blood pressure (mmHg) | 296 | 105.9 | 104.5 (98.0, 113.5) |
| Diastolic blood pressure (mmHg) | 296 | 64.9 | 64.5 (59.5, 69.5) |
| BMI-percentile for age and sex | 299 | 71.0 | 77.9 (53.4, 95.0) |
| BMI for age and sex relative to the 95th percentile** | 299 | 92.1 | 85.9 (78.7, 100.0) |
| Waist-to-height ratio | 244 | 0.5 | 0.5 (0.5, 0.6) |
| Percent body fat | 299 | 27.8 | 28.3 (20.9, 35.6) |
*
Leptin, adiponectin, and 8-isoprostane were not normally distributed and were logged for analysis.
**
This was the measure used in our models, based on CDC recommendations if a large proportion of children in the study population have severe obesity (BMI-percentile95 ≥ 120).