Table 3 Excess mortality-multivariate regression results, 1997–2002
From: Incorporating health care quality into health antitrust law
Variable | Hospital Market | CABG Market |
|---|---|---|
| Â | Estimate (st. error) | Estimate (st. error) |
HHI | 26.04*** (9.01) | 3.07** (1.22) |
HMO penetration | 0.578 (0.706) | 0.958 (0.752) |
Non-profit | 0.554 (0.477) | 0.265 (0.373) |
County | -0.757 (1.11) | -0.813 (1.07) |
District | -0.120 (0.888) | -0.340 (0.582) |
System | 0.116 (0.156) | 0.062 (0.152) |
Teaching | 0.409* (0.247) | 0.390 (0.242) |
Staffed beds | -0.00104* (0.000617) | -0.00107* (0.000607) |
CABG Volume | -0.00133*** (0.000354) | -0.00146*** (0.000357) |
Per capita income | 0.0130 (0.00959) | 0.00855 (0.00879) |
% Medicare | -0.0207** (0.00929) | -0.0220** (0.00898) |
% Medi-Cal | 0.0310** (0.0121) | 0.0267** (0.0107) |
Non-profit*HHI | -68.98*** (19.46) | -3.78*** (0.973) |
District*HHI | -25.55** (12.59) | -2.58** (1.24) |
% Medicare*HHI | 0.0916 (0.132) | 0.0113 (0.0222) |
% Medi-Cal*HHI | -0.539** (0.250) | -0.0702* (0.0385) |
1997 | 0.107 (0.267) | -0.00284 (0.263) |
1998 | -0.113 (0.243) | -0.219 (0.241) |
1999 | -0.200 (0.247) | -0.248 (0.245) |
2000 | 0.0874 (0.237) | 0.0527 (0.237) |
2001 | -0.510 (0.395) | -0.601 (0.393) |
Constant | 0.0750 (0.806) | 0.874 (0.716) |
R-squared F | 0.180 3.64*** | 0.189 3.88*** |