Table 4.

Negative Binomial Regression Showing the Effects of End Stage Renal Disease on Postoperative Length of Stay

Risk Variables	Incidence Rate Ratio	95% Confidence Interval	p-Value
Age	1.02	1.01 – 1.02	< 0.0001
Male Gender	0.73	0.69 – 0.78	< 0.0001
Race
African American	1.28	1.16 – 1.41	< 0.0001
American Indian or Alaska Native	1.52	1.05 – 2.24	0.0345
Asian or Pacific Islander	0.89	0.64 – 1.24	0.4816
Unknown	0.97	0.86 – 1.10	0.6770
Body Mass Index > 35	1.02	0.95 – 1.10	0.5960
Functional Status
Partially Dependent	2.38	1.62 – 3.60	< 0.0001
Totally Dependent	2.45	0.82 – 10.24	0.1478
American Society of Anesthesiologists Class			< 0.0001
Class II	1.61	1.38 – 1.88	< 0.0001
Class III	2.76	2.35 – 3.25	< 0.0001
Class IV	3.89	2.98 – 5.11	< 0.0001
End Stage Renal Disease	1.63	1.19 – 2.27	0.0036