Table 3.

Patient-Weighted Comparison of Patient Treatment and Outcome, by Hospital Affiliation Status, 1994 and 1998

Hospital Participation in Affiliations			Percent with PTCA or CABG within 90 Days			Percent Mortality within 90 Days
Type	Status	Hosps N	1994	1998	Percent Change	1994	1998	Percent Change
Any	Joined	604	29.3	35.6	21.5	25.0	24.7	−1.2
	Left	341	30.1	35.5	17.9	24.9	25.3	1.5
	In: 1994 and 1998	1,683	32.8	39.1	19.1	24.0	24.0	0.0
	Out: 1994 and 1998	687	25.2	31.5	25.3	26.1	25.6	−1.9
Low	Joined	579	30.5	36.4	19.3	24.9	24.9	−0.2
	Left	354	31.8	37.7	18.7	24.7	25.0	1.4
	In: 1994 and 1998	1,076	33.0	39.1	18.7	23.7	23.9	1.0
	Out: 1994 and 1998	1,306	28.3	35.0	23.5	25.3	24.5	−3.1
High	Joined	591	32.3	38.7	19.7	23.9	24.1	0.7
	Left	419	31.8	36.4	14.5	24.3	24.8	2.0
	In: 1994 and 1998	922	33.9	40.5	19.2	24.0	23.7	−1.1
	Out: 1994 and 1998	1,383	26.8	33.2	23.7	25.4	25.2	−0.9
PHO	Joined	495	31.0	37.2	20.0	24.7	24.9	0.8
	Left	283	32.9	37.6	14.3	24.1	24.5	1.7
	In: 1994 and 1998	711	33.1	39.5	19.3	23.6	23.6	−0.1
	Out: 1994 and 1998	1,826	29.3	35.7	22.0	25.1	24.8	−1.3
ISM	Joined	464	33.6	40.3	19.9	23.8	23.8	0.0
	Left	206	34.8	39.4	13.4	23.9	23.7	−0.8
	In: 1994 and 1998	367	34.2	41.0	19.8	23.5	23.4	−0.3
	Out: 1994 and 1998	2,278	29.3	35.4	20.9	24.9	24.9	−0.3

Notes: PTCA = percutaneous transluminal coronary angioplasty; CABG = coronary artery bypass graft; PHO = physician–hospital organization; ISM = integrated salary model.