Table 4.
Analysis of potential factors affecting ALOS for COPD^ treatment
| Negative Binomial Regression Model | |||
|---|---|---|---|
| ß | Standard Error | P | |
| Age | 0.0023 | 0.0024 | 0.3248 |
| Gender | |||
| Female | 0.3803 | 0.0554 | < 0.001 |
| Male | 0 (reference) | ||
| Public assistance* | |||
| Yes | 0.1692 | 0.0464 | 0.0003 |
| No | 0 (reference) | ||
| Living in nursing home | |||
| Yes | 0.5430 | 0.0652 | < 0.001 |
| No | 0 (reference) | ||
| Unplanned readmission | |||
| Yes | 0.3891 | 0.0533 | < 0.001 |
| No | 0 (reference) | ||
| Charlson comorbidity index | 0.3171 | 0.0405 | < 0.001 |
^ COPD: ICD-9-CM Diagnosis Code: 490-492, 494-496
*Public assistance: Patients eligible for complete or partial medical fee waiver