Table 11. Unadjusted Mortality.

	Harborview		ABA-NBR
Year Group	Standard Admissions	Mortality	Standard Admissions	Mortality
1974–1979	1081	11.9%
1980–1984	1258	8.2%
1985–1989	1453	5.8%
1990–1994	1445	5.7%
1995–1999	1362	7.5%	20649	6.9%
2000–2004	1328	7.6%	24030	6.6%
2005–2009	1538	5.5%	31663	6.0%

At Harborview unadjusted mortality declined to the mid-1990s, relapsed 1995–2004, and then returned to the 1985–1989 level. The periods 1990–1994 and 2005–2009 (bold) achieved statistical significance in the regression model suggesting no improvement since 1990. Unadjusted mortality declined from 6.9% to 6.0% in the ABA-NBR data.