Table 3.

Number of patients and relative riska (RR) for patients in each urea reduction ratio (URR) and body-size group

URRSmall (<23.1 kg/m2)Medium (23.2 to 27.8 kg/m2)Large (>27.8 kg/m2)All
nRRanRRanRRanBMI-Adjusted RRbNot BMI-Adjusted RRc
a Relative mortality risk adjusted for factors of Tables 1 and 2.
b Relative mortality risk adjusted for factors of Tables 1 and 2 and BMI.
c Relative mortality risk adjusted for factors of Tables 1 and 2 but not BMI.
d Reference group for 15 BMI and URR groups.
e Reference group for three BMI groups (this row).
f Reference group for five URR groups (this column).
<60%2671.734141.336451.3014511.481.44
60 to 65%12071.4717311.2024330.9756291.211.19
65 to 70%36721.2246331.00d52960.78140451.00f1.00f
70 to 75%59981.0458130.8653810.69176170.860.89
>75%38520.9226980.7219270.6387190.760.81
All149961.19152891.00e156820.8445967