Table 1.

Baseline characteristics of the overall study population and of individuals to be screened and not to be screened per screening approach

VariableAll (n=3411)Screening Approaches
Approach 1 (CVD Risk)Approach 2 (CVD Risk or Age >60 yr)Approach 3(CVD Risk or Low SES)
Screened: n=527 (15%)Not screened: n=2884 (85%)P ValueScreened: n=978 (29%)Not screened: n=2433 (71%)P ValueScreened: n=855 (25%)Not screened: n=2556 (75%)P Value
Age (yr)49±1259±1147±12<0.00163±9.043±8.4<0.00158±1146±11<0.001
Men (%)4547450.3947450.2744460.38
White (%)9594950.5396950.2595950.75
Body mass index (kg/m2)26±4.128±4.225±3.9<0.00128±4.125±3.9<0.00128±4.325±3.8<0.001
Cholesterol (mg/dl)216.2±42.5223.9±38.6216.1±42.1<0.001231.7±38.1212.4±42.1<0.001227.8±42.3212.1±42.0<0.001
Smoking (%)352736<0.0012738<0.0013435<0.001
Known (%)
 Hypertension13840.0<0.001450.0<0.001520.0<0.001
 Diabetes mellitus1.17.40.0<0.0014.00.0<0.0014.60.0<0.001
 CVD history4.2270.0<0.001150.0<0.001170.0<0.001
Unknown (%)
 Hypertension 165.718<0.0012213<0.00116140.16
 Diabetes mellitus3.48.22.5<0.0016.52.1<0.0016.22.2<0.001
eGFR (ml/min per 1.73 m2)96±1685±1797±15<0.00184±15100±14<0.00188±1698±15<0.001
UAE (mg/24 hr)7.1 (5.4–11)8.5 (5.7–17)6.9 (5.4–10)<0.0018.1 (5.7–15)6.9 (5.4–10)<0.0018.4 (5.5–16)6.9 (5.4–10)<0.001
  • Normally distributed variables are presented as mean±SD. Skewed variables are presented as median (interquartile range). CVD, cardiovascular disease; eGFR, estimated glomerular filtration rate; UAE, urinary albumin excretion; SES, socioeconomic status.