Table 1.

Characteristics of the REasons for Geographic and Racial Differences in Stroke (REGARDS) study population by age group

Participant CharacteristicAge Group, Years
45 to 59.9 (n = 7630)60 to 69.9 (n = 9228)70 to 79.9 (n = 5823)≥80 (n = 1669)
Age, years54.3 (4.0)64.4 (2.8)73.9 (2.8)83.1 (3.0)
Women, %59.252.849.849.7
African American, %44.440.136.031.5
Less than high school education, %6.611.916.118.8
Region of residence, %
    nonbelt41.444.247.752.0
    stroke belt36.135.232.629.6
    stroke buckle22.520.719.818.4
Household income <$20,000, %14.318.824.028.7
Not physically active, %30.332.235.345.1
Current smoker, %19.814.69.13.4
Fair/poor self-rated health, %17.217.016.818.2
Waist circumstance, cm95.8 (16.4)96.9 (15.3)95.7 (14.7)92.9 (13.2)
Systolic BP, mmHg123.8 (16.1)127.7 (15.8)130.4 (17.1)131.4 (17.7)
Diastolic BP, mmHg77.6 (9.8)76.8 (9.3)75.2 (9.5)73.3 (9.8)
Antihypertension medication use, %44.657.061.562.4
Diabetes mellitus, %16.722.222.117.9
LDL cholesterol, mg/dl118.7 (35.0)114.4 (34.8)109.2 (33.4)107.1 (32.4)
HDL cholesterol, mg/dl52.1 (15.9)51.8 (16.1)51.9 (16.0)52.8 (16.8)
Statin use, %21.734.638.633.6
hsCRP ≥ 2 mg/L, %53.154.451.547.8
History of CHD, %9.016.924.828.9
History of stroke, %3.55.67.99.2
Atrial fibrillation, %5.97.711.114.6
Urine albumin concentration, mg/L8 (4 to 17)9 (5 to 19)11 (6 to 25)14 (6 to 31)
Urine creatinine concentration, mg/dl131 (83 to 186)125 (79 to 177)117 (75 to 165)105 (69 - 146)
ACR ≥ 30 mg/g, %10.913.218.325.0
eGFR < 60 ml/min per 1.73 m2, %2.97.918.933.6
  • Numbers in table are mean (standard deviation) or percentage except for urine albumin concentration and urine creatinine concentration, which are median (25th to 75th percentiles). hsCRP, high sensitivity C-reactive protein; CHD, coronary heart disease; ACR, urinary albumin-to-creatinine ratio; eGFR, estimated GFR.