Table 1.
Descriptive data on components of allostatic load
| Not poor | Poor | |
|---|---|---|
| Wave 1, age 9 years | ||
| Resting diastolic blood pressure, mmHg | 58.64 | 60.14 |
| Resting systolic blood pressure, mmHg | 100.97 | 103.77 |
| Overnight cortisol, μg/mg creatinine | 0.02 | 0.03 |
| Overnight epinephrine, ng/mg creatinine | 3.62 | 5.19 |
| Overnight norepinephrine, ng/mg creatinine | 31.17 | 33.29 |
| Body mass index, kg/m2 | 17.90 | 18.86 |
| Allostatic load, 0–6 | 2.63 | 3.21 |
| Wave 2, age 13 years | ||
| Resting diastolic blood pressure, mmHg | 63.90 | 63.94 |
| Resting systolic blood pressure, mmHg | 109.65 | 112.26 |
| Overnight cortisol, μg/mg creatinine | 0.12 | 0.11 |
| Overnight epinephrine, ng/mg creatinine | 5.00 | 4.91 |
| Overnight norepinephrine, ng/mg creatinine | 21.45 | 20.78 |
| Body mass index, kg/m2 | 21.41 | 23.57 |
| Allostatic load, 0–6 | 2.62 | 2.93 |
Allostatic load was calculated with 0 = no risk and 1 = risk, wherein risk is defined as scoring in the upper 50th percentile for each of the following 6 components: Mean of 6 resting systolic BP readings after discarding the initial reading, Mean of 6 resting diastolic BP readings after discarding the initial reading, 12 hour overnight urinary cortisol/creatinine, 12 hour overnight urinary epinephrine/creatinine, 12 hour overnight urinary norepinephrine/creatinine, and BMI.