. Author manuscript; available in PMC: 2011 Oct 4.

Published in final edited form as: J Heart Lung Transplant. 2011 May 28;30(10):1161–1168. doi: 10.1016/j.healun.2011.04.013

Table 1.

Demographics According to RIFLE Classification

Variable	Rifle-0 N=39	Risk N=28	Injury N=24	Failure N=15	P-value^*
Age, years (SD)	50 (15)	51 (12)	47 (13)	50 (13)	0.8
Female Gender, N (%)	20 (52%)	12 (43%)	11 (46%)	9 (60%)	0.7
BMI	24.6 (5.2)	22.6 (4.2)	24.1 (3.9)	24.4 (5.4)	0.4
Days on Wait List, days (IQR)	55 (19–149)	86 (17–386)	53 (20–777)	285 (25–533)	0.5
Pre-op FEV1, % pred (SD)	34 (19)	34 (30)	26 (17)	37 (27)	0.5
ICU before LTx, N (%)	7 (18%)	5 (18%)	7 (29%)	3 (21%)	0.7
Bilateral LTx, N (%)	30 (77%)	27 (96%)	22 (92%)	14 (93%)	0.1
GFR <90mL/min/1.73 m², N(%)	13 (33%)	11(39%)	6 (25%)	5 (33%)	0.8
LAS, (SD)	43.1 (15.1)	41.6 (10.6)	44.9 (18.7)	42.5 (14.9)	0.9

SD=standard deviation; IQR=interquartile range; BMI=body mass index; FEV1=forced expiratory volume in 1 second; ICU=intensive care unit; GFR=glomerular filtration rate; LAS=lung allocation score

P-value for normally distributed continuous variables based on one-way analysis of variance with post-hoc comparisons performed using the Tukey Kramer method, or chi-square analysis for categorical variables. Wait list time is not normally distributed and the non-parametric Kruskall-Wallis rank test was used for group comparisons.