Table 3.
Relative Changes of Metrics One Year after Documentation Improvement Education Compared to One Year Before Documentation Improvement Education
| Parameter | Relative Change from Before to After | Unadjusted p-Value | Adjusted p-Valuea |
|---|---|---|---|
| Mean Values for Hospitalizationsb | |||
| CMI | 5.3% | .0074 | .067 |
| Normalized CMI | 28% | < .0001 | .001 |
| Patient age | 0.35% | .690 | — |
| Actual LOS | 1.2% | .679 | — |
| Expected LOS (MS-DRG Arithmetic) | 9.5% | < .0001 | .001 |
| Expected LOS (MS-DRG Geometric) | 9.2% | < .0001 | .001 |
| Number of ICD-9-CM diagnosis codes | 12% | < .0001 | .001 |
| Percentage of Hospitalizations Receiving Classification as Followsc | |||
| CC or MCC | 14% | < .0001 | .001 |
| MCC | 39% | < .0001 | .001 |
| Medical MS-DRG | 6.9% | .178 | — |
| APR-DRG ROM = 4 | 5.7% | .515 | — |
| APR-DRG ROM = 3 or 4 | 24% | < .0001 | .001 |
| APR-DRG SOI = 4 | 19% | .034 | — |
| APR-DRG SOI = 3 or 4 | 11% | .0089 | — |
| Neurosurgery MS-DRGsd | –2.4% | .103 | — |
| Payer = Medicare (FFS, HMO) or Medicaid (FFS, HMO) | –3.1% | .279 | — |
Note: Bold indicates statistical significance based on unadjusted p-values.
Abbreviations: APR, All Patient Refined Diagnosis Related Group; CC, complication or comorbidity; CMI, case mix index; FFS, fee-for-service; HMO, health maintenance organization; LOS, length of stay; MCC, major complication or comorbidity; MS-DRG, Medicare Severity Diagnosis Related Group; ROM, risk of mortality.
Adjusted p-value calculated using the Holm-Bonferroni sequential correction procedure for multiple comparisons. Dash indicates unadjusted p-value or prior sequential corrected p-value greater than .05.
Unadjusted p-value calculated using Student's t-test.
Unadjusted p-value calculated using chi-square distribution.
See Table 1 for definition of neurosurgery MS-DRGs.