Adjusted Associations Between Physician CoC, Total Cost and Preventable Hospitalization: A Sensitivity Analysis of Patients with 2 or More visits in 2019
| Variable | Total Cost% Change (95% CI) | Any Preventable HospitalizationOdds Ratio (95% CI) |
|---|---|---|
| CoC | ||
| Quintile 3 | 5.9% (3.4%, 8.5%)* | 1.00 (0.94, 1.07) |
| Quintile 4 | 10.1% (7.5%, 12.8%)* | 0.98 (0.92, 1.05) |
| Quintile 5 | 8.8% (6.1%, 11.5%)* | 1.08 (1.01, 1.15) |
| Quintiles 1&2 | – | – |
| Age† | −1.4% (−1.5%, −1.2%)* | 1.16 (1.13, 1.18)* |
| Gender | ||
| Woman | 8.4% (8.0%, 8.7%)* | 1.22 (1.17, 1.27)* |
| Man | – | – |
| Geography of residence | ||
| Isolated small rural town | 1.4% (0.2%, 2.6%)* | 1.03 (0.91, 1.16) |
| Small rural town | 1.0% (−0.2%, 2.2%) | 1.25 (1.14, 1.37)* |
| Large rural city/town | 1.8% (0.8%, 2.9%)* | 1.17 (1.07, 1.28)* |
| Urban | – | – |
| Primary insurance payer | ||
| Medicare | −33.7% (−34.1%, −33.4%)* | 1.53 (1.40, 1.70)* |
| Medicaid | −23.5% (−24.0%, −23.0%)* | 1.54 (1.34, 1.78)* |
| Commercial | – | – |
| SDI | ||
| 75+ | 0.3% (−0.2%, 0.9%) | 1.08 (1.02, 1.14) |
| 1 to 74 | – | – |
| CCI (log)† | 7.2% (7.1%, 7.3%)* | 1.24 (1.22, 1.25)* |
| MARA (log)† | 29.0% (29.0%, 29.1%)* | 1.49 (1.48, 1.51)* |
| Physician specialty | ||
| Internal medicine | 0.7% (−1.3%, 2.7%) | 0.96 (0.94, 1.07) |
| Pediatric medicine | −13.8% (−15.8%, −11.9%)* | 0.26 (0.18, 0.39)* |
| Family medicine | – | – |
Notes: Estimates of two-way interactions are shown, with all main effects (as in Table 3) included in the model.
↵*P < .05.
↵†Quintiles 1&2 are reference category for CoC. Age centered at 53, estimate of 10-year increase. CCI centered at 0, estimate of 1 point increase. MARA centered at 1, estimate of 1 point increase.
Abbreviations: SDI, social deprivation index; CCI, Charlson’s comorbidity index; MARA, Milliman advanced risk adjusters; CI, confidence interval.