Table 4.

In-hospital mortality for RACHS-1 categories in administrative vs. clinical registry data

RACHS-1 Category	Mortality for Operations Identified in Clinical Registry	Mortality for Operations Identified in Administrative Data	Absolute Difference in Mortality	Relative Difference in Mortality	P-Value
1	1.06% (69/6519)	0.92% (53/5755)	−0.14%	−13.0%	0.34
2	0.98% (182/18581)	1.10% (189/17218)	+0.12%	+12.1%	0.12
3	2.94% (486/16510)	2.91% (522/17960)	−0.04%	−1.3%	0.76
4	6.41% (361/5636)	6.26% (365/5834)	−0.15%	−2.3%	0.60
5	32.26% (10/31)	19.18% (14/73)	−13.1%	−40.5%	0.09
6	15.18% (379/2496)	14.16% (287/2027)	−1.03%	−6.8%	0.08

Reference for comparisons: clinical registry data.