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Poisson Regression Time-Group Interaction Estimates and p Values for Each Cost Category Examined. Negative Values Indicate a Relative Reduction in Per-Member-Per-Month Expenditures in the Intervention Group
| Care category | Time-group interaction estimate | p value |
|---|---|---|
| All spine care | − 0.1266 | < 0.0001 |
| Spine surgery | − 0.1899 | < 0.0001 |
| Opioid treatment | −0.4387 | < 0.0001 |
| Manual care | 0.0315 | < 0.0001 |
