Comparison of serum creatinine level in the 55 men and women with severe renal failure (Cockcroft and Gault formula glomerularfiltration rate [C-G GFR], ≤30 mL/min). Women had significantly lower mean serum creatinine values than men, despite a similarlevel of renal function. This is likely because of the smaller muscle mass of women compared with men, as suggested by thewomen's significantly lower mean weight. The asterisk indicates P<.005. To convert creatinine to milligrams per deciliter, divide by88.4.
Investigation for causes and complications of severe renal failure (Cockcroft and Gault formula glomerular filtration rate, ≤30mL/min) in the 40 nonreferred patients.