Table 2.

Mortality associated with weekend versus weekday admission with a primary diagnosis of AKI on the basis of NIS data from 2003 to 2006

	Mortality, n (%)		OR (95% CI)
	Weekend (n = 45,203)	Weekday (n = 169,759)	Unadjusted	Adjusteda
Mortality by third day of admission	1442 (3.2%)	4318 (2.5%)	1.26 (1.19 to 1.34)	1.22 (1.15 to 1.30)
Total in-hospital mortality	3321 (7.3%)	11,365 (6.7%)	1.11 (1.06 to 1.15)	1.07 (1.02 to 1.12)

^aOR adjusted for age, gender, race, Charlson comorbidity index, and use of mechanical ventilation.