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Table 2 Distribution of blood pressure measures, lead exposure, and allostatic load components by allostatic load score among adults aged 40 to 65 years in the national health and nutritional examination survey, United States, 1999-2008 (N = 8194)

From: Allostatic load amplifies the effect of blood lead levels on elevated blood pressure among middle-aged U.S. adults: a cross-sectional study

Variable Low allostatic loada(N = 4069) High allostatic loada(N = 4125)
Blood pressure, % (SE)   
 Elevated systolic blood pressure 12.8 (0.8) 20.7 (0.8)
 Elevated diastolic blood pressure 6.9 (0.5) 8.8 (0.6)
Pb Exposure, % (SE)   
 Quintile 1 (≤1.05 μg/dL) 17.5 (1.0) 22.9 (1.0)
 Quintile 2 (1.06 - 1.44 μg/dL) 20.1 (0.9) 19.9 (0.8)
 Quintile 3 (1.45 – 1.90 μg/dL) 20.7 (0.9) 19.3 (0.8)
 Quintile 4 (1.91 – 2.69 μg/dL) 19.9 (0..7) 19.5 (0.9)
 Quintile 5 (> 2.70 μg/dL) 21.8 (0.8) 18.5 (0.8)
Antihypertensive medication use, % (SE) 15.7 (0.7) 32.8 (0.9)
Components of Allostatic Load mean ± SE (range)
 Triglycerides (mg/dL), 115.3 ± 1.56 (26 - 1000) 222.3 ± 4.02 (31 - 3854)
 HDL cholesterol (mg/dL) 59.8 ± 0.35 (8 -164) 44.9 ± 0.27 (12 - 108)
 Waist circumference (cm) 91.8 ± 0.23 (59.4 -157.1) 108.35 ± 0.32 (70.7 – 168.4)
 C-reactive protein (mg/dL) 0.23 ± 0.01 (0.01 - 17.5) 0.66 ± 0.02 (0.01 – 18.5)
 Creatinine (mg/dL) 123.66 ± 1.49 (7 – 609) 112.86 ± 1.61 (7 – 774)
 Albumin (g/dL) 4.38 ± 0.01 (2.5 – 5.3) 4.16 ± 0.01 (2.3 - 5.3)
 Glycosolated hemoglobin (%) 5.31 ± 0.01 (3.3 – 14.0) 5.95 ± 0.02 (4.1 – 18.8)
 Composite allostatic load score 16.9 ± 0.02 (7 – 21) 25.7 ± 0.06 (22-35)
  1. aLow allostatic load is equal to a score between 7 and 20. High allostatic load is equal to a score between 21 and 35. Elevated systolic BP defined as average BP ≥ 140 mm Hg and elevated diastolic BP defined as average BP ≥ 90 mm Hg.