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Time Series Analysis Results: Clostridioides difficile Infection (CDI) Treatment Rate Ratios for Nucleic Acid Amplification Testing Versus 2-Step CDI Confirmation
| Intervention | Intervention Effect | Use Rate Ratioa (95% CI) | P Value |
|---|---|---|---|
| 2-step CDI confirmation | Baseline trend | 1.04 (.99–1.09) | .122 |
| Level change | 0.63 (.58–.70) | <.001 | |
| Slope change | 0.79 (.69–.90) | <.001 |
Abbreviations: CDI, Clostridioides difficile infection; CI, confidence interval.
Rate ratios expressed per 12-month period.
