Table 4.

Linear regression analysis of RFFT score with albuminuria and eGFR in tertiles of age

Tertile 1 (age 34 to 48 years)Tertile 2 (age 49 t o 59 years)Tertile 3 (age 60 to 82 years)
B95% CIPB95% CIPB95% CIP
Albuminuria (mg/24 h)
    low (<10)ReferenceReferenceReferenceReferenceReferenceReference
    intermediate (10 to 29)−2.09−4.8 to 0.60.13−1.68−4.3 to 0.80.18−0.20−2.5 to 2.10.86
    elevated (≥30)−5.25−10.4 to −0.10.05−1.76−5.3 to 1.90.37−0.50−3.1 to 2.10.71
eGFR (ml/min per 1.73 m2)0.04−0.6 to 0.10.44−0.03−0.1 to 0.10.47−0.03−0.4 to 0.10.35
Age (years)−0.76−1.1 to −0.4<0.001−1.17−1.5 to −0.8<0.001−0.79−1.0 to −0.6<0.001
Gender
    maleReferenceReferenceReferenceReferenceReferenceReference
    female−0.65−3.2 to 1.90.621.18−1.2 to 3.60.340.47−1.7 to 2.60.67
Educational level
    primary schoolReferenceReferenceReferenceReferenceReferenceReference
    lower secondary4.24−3.2 to 11.60.265.430.1 to 9.90.025.70−3.0 to 8.4<0.001
    higher secondary12.194.9 to 19.40.00114.229.6 to 18.9<0.00111.288.2 to 14.4<0.001
    university22.8615.6 to 30.1<0.00122.6918.1 to 27.3<0.00119.2716.0 to 22.5<0.001
  • Model adjusted for adjusted for classes of albuminuria, eGFR, age, gender, educational level, diabetes, hypertension, history of cardiovascular disease, body mass index, alcohol use, cholesterol, and smoking. Model tertile 1: adjusted R2 = 0.15, residual SD = 23. Model tertile 2: adjusted R2 = 0.21, residual SD = 21. Model tertile 3: adjusted R2 = 0.21, residual SD = 18; CI, confidence interval.