Table 7.

Comparison of mortality by treatment groups with US Renal Data System data

Crit-Line GroupUsual Care Group
Patients227216
Deaths
    observed197
    expected24.726.8
Deaths/100 patient-years at risk
    observed17.46.4
    expected22.624.6
Standardized mortality ratio0.770.26
    χ21.314.6
    P valueNS<0.001