Table 5 Effects on length of stay; relevant regression coefficients (RC) and covariance with the managed care group (COV, whether this coefficient is positive or negative) for each variable per DRG.
DRG | Diagnosis/ Procedure | HMO patients per physician | HMO patients per hospital | number of insurers per physician | number of insurers per hospital | number of hospitals per physician | ||
|---|---|---|---|---|---|---|---|---|
RC | COV | RC | COV | COV | COV | COV | ||
88 | Chronic Obstructive Pulmonary Disease | -0.22 | pos | 0.48 | neg** | pos | neg | pos* |
127 | Congestive Heart Failure | 0.03 | pos** | 0.46 | neg | pos | pos | pos |
209 | Hip replacement | -0.97** | neg** | -1.60** | neg** | pos** | neg | pos** |
358 | Hysterectomy with complications | -0.25** | neg | -0.25 | pos | pos* | pos | pos* |
359 | Hysterectomy without complications | -0.08 | neg** | 0.49* | neg | pos** | pos | pos |
370 | Cesarean section with complications | -0.29* | pos* | 0.78 | pos* | pos | pos** | neg** |
371 | Cesarean section without complications | -0.08** | neg | 0.59* | pos | pos** | pos* | neg |