Table 4 |
||||||||
| The adjusted association between COC and care outcomes among COC indices – results of the GEE model | ||||||||
| Integrated index (ICOC) | Density (UPC) | Dispersion (COCI) | Sequence (SECOC) | |||||
| Exp(β) | Pr > ChiSq | Exp(β) | Pr > ChiSq | Exp(β) | Pr > ChiSq | Exp(β) | Pr > ChiSq | |
| Model of Utilization rate of ED service | ||||||||
| Parameter estimate (β) | ||||||||
| COC index of medical facility level | ||||||||
| All chronic conditions | 0.800 | 0.0002 | 0.779 | 0.0002 | 0.804 | 0.0001 | 0.856 | 0.0041 |
| Major chronic condition | 0.681 | <.0001 | 0.642 | <.0001 | 0.724 | <.0001 | 0.696 | <.0001 |
| COC index of physician level | ||||||||
| All chronic conditions | 2.116 | <.0001 | 2.216 | <.0001 | 2.014 | <.0001 | 1.727 | <.0001 |
| Major chronic condition | 0.591 | <.0001 | 0.544 | <.0001 | 0.636 | <.0001 | 0.646 | <.0001 |
| GEE fit criterion | ||||||||
| QIC | 101,066 | 101,090 | 101,086 | 101,133 | ||||
| QICu | 101,063 | 101,087 | 101,083 | 101,130 | ||||
| Model of Hospitalization | ||||||||
| Parameter estimate (β) | ||||||||
| COC index of medical facility level | ||||||||
| All chronic conditions | 0.925 | 0.0212 | 0.870 | 0.0003 | 0.899 | 0.0008 | 1.011 | 0.7063 |
| Major chronic condition | 0.630 | <.0001 | 0.601 | <.0001 | 0.683 | <.0001 | 0.641 | <.0001 |
| COC index of physician level | ||||||||
| All chronic conditions | 1.688 | <.0001 | 1.842 | <.0001 | 1.596 | <.0001 | 1.423 | <.0001 |
| Major chronic condition | 0.634 | <.0001 | 0.577 | <.0001 | 0.686 | <.0001 | 0.679 | <.0001 |
| GEE fit criterion | ||||||||
| QIC | 250,260 | 250,344 | 250,334 | 250,390 | ||||
| QICu | 250,257 | 250,340 | 250,331 | 250,387 | ||||
Note: QIC: quasi-likelihood information criterion for alternating logistic regressions; QICu: QIC for the unstructured working correlation model.
Chan et al. BMC Health Services Research 2012 12:405 doi:10.1186/1472-6963-12-405
