Variables  Non late referral  Late Referral
Age   75<  75>  75<  75> 
Number (percentage)  67 (70)  28 (30)  33 (82)  7 (18) 
RRT  45 (67)  9 (32)  30 (91) **  6 (86)** 
Myocardial infaraction   5 (7)  4 (14)  0 0
Cerebrovascular disease  3 (4)  3 (11)  2 (6)  1 (14) 
Heart failure  10 (15)  6 (21)  0 0
Neoplasma  4 (7)  5 (18)  1 (3)  0
Others 0 1 (4)  0 0
Values are expressed as count (percentage). RRT, renal replacement therapy. **indicates P<0.01 in comparison with non late referral patients corresponding the same age group.
Table 8: Comparison of events between non late referral population and late
referral patients.