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)
	B	95% CI	P	B	95% CI	P	B	95% CI	P
Albuminuria (mg/24 h)
low (<10)	Reference	Reference		Reference	Reference		Reference	Reference
intermediate (10 to 29)	−2.09	−4.8 to 0.6	0.13	−1.68	−4.3 to 0.8	0.18	−0.20	−2.5 to 2.1	0.86
elevated (≥30)	−5.25	−10.4 to −0.1	0.05	−1.76	−5.3 to 1.9	0.37	−0.50	−3.1 to 2.1	0.71
eGFR (ml/min per 1.73 m2)	0.04	−0.6 to 0.1	0.44	−0.03	−0.1 to 0.1	0.47	−0.03	−0.4 to 0.1	0.35
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
male	Reference	Reference		Reference	Reference		Reference	Reference
female	−0.65	−3.2 to 1.9	0.62	1.18	−1.2 to 3.6	0.34	0.47	−1.7 to 2.6	0.67
Educational level
primary school	Reference	Reference		Reference	Reference		Reference	Reference
lower secondary	4.24	−3.2 to 11.6	0.26	5.43	0.1 to 9.9	0.02	5.70	−3.0 to 8.4	<0.001
higher secondary	12.19	4.9 to 19.4	0.001	14.22	9.6 to 18.9	<0.001	11.28	8.2 to 14.4	<0.001
university	22.86	15.6 to 30.1	<0.001	22.69	18.1 to 27.3	<0.001	19.27	16.0 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.