Table 1.

Baseline characteristics by tertile of baseline diastolic BP among the Systolic Blood Pressure Intervention Trial participants with baseline CKD (N=2646)

Baseline CharacteristicLowest tertile <69 mm Hg, N=823Middle tertile =69–79 mm Hg, N=893Highest tertile ≥80 mm Hg, N=930
Diastolic BP, mm Hg61±674±388±7
Age, yr76.1±8.072.4±8.467.7±9.2
Women, %42.040.837.4
Black race, %19.921.730.8
Cardiovascular disease, %30.726.516.6
Framingham 10-yr cardiovascular disease risk score ≥15%, %63.564.665.4
Never smoked, %44.245.447.1
Antihypertensive agents, no. per patient2.3±0.92.1±1.01.9±1.0
Systolic BP, mm Hg133±16137±14147±15
Pulse pressure, mm Hg71±1663±1359±14
Body mass index, kg/m228.5±5.629.3±5.630.4±5.9
eGFR, ml/min per 1.73 m247±1048±949±9
CKD stage 3b or higher (eGFR<45 ml/min per 1.73 m2), %39.232.829.5
Urine albumin-creatinine ratio, mg/g13.3 (6.8–38.8)11.6 (5.8–36.4)15.1 (6.7–52.8)
  • Results are presented as percentage for binary variables and as mean ± SDs for continuous variables other than albumin-creatinine ratio, which is presented as median (interquartile range). For comparison of differences between the tertiles for numeric variables by using one-way ANOVA and categorical variables by using chi-squared tests, all P values were < 0.001, except for women (P=0.12), Framingham 10-year cardiovascular disease risk score ≥15% (P=0.72), and never smoked (P=0.48).