Variables  Younger Group  Elderly Group  Number   179 106 Age (years)  70.8±2.0  79.2±2.6*  Male (%)  106/73  58/48  eGFR (ml/min/1.73m2)  21.6± 3.3  22.1 ± 4.1  Underlying disease(male/female)(%)      DM  91 (60/31)(51)  24**(15/7)(23)  GN  41 (25/16)(23)  24 (17/9)(23)  HT  44 (18/26)(24)  54**(25/29)(51)  others  3 (3/0)(2)  4 (1/3)(3)  Late Referral (male/female) (%)  44 (28/16)(25)  23 (11/12)(22)

Values are expressed as mean±SD. eGFR, estimated glomerular filtration; DM, diabetic nephropathy; GN, glomerular nephritis; HT, hypertensive nephrosclerosis. ** indicates P<0.01 compared with younger group.

Table 1: Patients Characteristics