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Table 1 Characteristics of study participants (N = 3,663)

From: Association of adiponectin with type 2 diabetes and hypertension in African American men and women: the Jackson Heart Study

  Men (N = 1,334, 36.4%) Women (N = 2,329, 63.6%) P-valuea
Age (years), mean ± stdb 53.4 ± 13.0 54.5 ± 12.7 .01
Annual household income,%    
Less than $19,999 19.9 32.3 <.0001
$20,000 - 49,999 32.9 39.2
$50,000 or more 47.2 28.6
Hypertensive, % 57.7 62.1 .008
Systolic blood pressure (mmHg) 127.8 ± 18.1 125.9 ± 18.2 .002
Diastolic blood pressure (mmHg) 81.6 ± 10.4 77.5 ± 10.0 <.0001
Type 2 Diabetic, % 12.6 16.2 .003
Current Smoker,% 16.6 10.4 <.0001
Physical activity score 8.8 ± 2.6 8.3 ± 2.5 <.0001
Alcohol consumer, % 61.7 40.0 <.0001
BMIc (kg/m2) 29.8 ± 6.2 32.8 ± 7.6 <.0001
Fasting insulin (uU/mL) 17.1 ± 30.7 18.8 ± 15.5 .05
LDL-Cholesterold (mg/dL) 128.5 ± 36.6 125.1 ± 36.1 .006
HDL-Cholesterole (mg/dL) 46.0 ± 12.5 55.1 ± 14.4 <.0001
Total Cholesterol (mg/dL) 196.1 ± 39.1 199.8 ± 39.4 .005
HOMA-IRf 3.45 ± 2.42 3.78 ± 2.41 .0002
Fasting Glucose (mg/dl) 99.4 ± 31.4 99.1 ± 30.9 .78
CRPg (mg/dL) .37 ± 1.09 .59 ± .84 <.0001
Plasma leptin (ng/mL) 11.2 ± 10.6 37.5 ± 23.3 <.0001
Circulating Plasma adiponectin (ug/mL) 4.1 ± 3.3 6.0 ± 4.6 <.0001
Circulating Plasma adiponectin, %    
≤2.70 ug/mL 38.8 17.5 <.0001
>2.70 - ≤4.2 ug/mL 26.8 23.8  
>4.2 - ≤6.7 ug/mL 20.3 28.0  
>6.7 ug/mL 14.1 30.7  
  1. aTwo sample t-test for continuous variables and chi-square for categorical variables; significance established as P < .05.
  2. bstd = standard deviation. All continuous variables present mean ± deviation.
  3. cBMI = body mass index.
  4. dLDL = low-density lipoprotein.
  5. eHDL = high-density lipoprotein.
  6. fHOMA-IR = homeostasis model assessment – insulin resistance.
  7. gCRP = C-reactive protein.