Table 3.

Age, disease history characteristics and APACHE II scores of ESRF patients discharged alive from ICU following an episode of critical illness, comparing those with a medical and surgical reason for admission

	Surgical (n = 64)	Medical (n = 47)	P value
Mean age (± SD)	59.6 (± 11.8)	58.9 (± 14.6)	0.75
Median days on dialysis prior to admission (IQR)	744 (292 to 1995)	790 (186 to 1936)	0.96
Mean APACHE II score (± SD)	24.4 (± 5.5)	26.2 (± 5.7)	0.12

APACHE = Acute Physiology and Chronic Health Evaluation; ESRF = end-stage renal failure; ICU = intensive care unit; IQR = interquartile range; SD = standard deviation.