Table 2.
Estimates from Generalized Estimating Equations with covariance assumed between the two timepoints (baseline-post).
| Total Number of PPV* |
Total Number in Target Volume* |
Mean PPV Volume (ml)** |
Mean PPV Rate (vpm)** |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Rate Ratio (CI95) | P-value | Rate Ratio (CI95) | P-value | Mean Difference (CI95) | P-value | Mean Difference (CI95) | P-value | ||
| Model 1 | Post PPV Refresher relative to Baseline | 1.65 (1.33, 2.06) | <0.0001 | 1.87 (1.25, 2.80) | 0.002 | −2.09 (−3.92, −0.27) | 0.025 | 12.96 (3.34, 22.57) | 0.008 |
| Model 2 | First PPV Refresher relative to Baseline | 1.68 (1.12, 2.52) | 0.013 | 3.51 (1.73, 7.12) | 0.0005 | 2.35 (-0.13, 4.82) | 0.064 | 9.55 (−7.42, 26.51) | 0.27 |
| Additional PPV Refresher beyond First*** | 0.99 (0.83, 1.18) | 0.938 | 0.72 (0.54, 0.95) | 0.023 | −2.09 (−3.08, −1.10) | <0.0001 | 1.61 (−5.0, 8.21) | 0.634 | |
*
Estimated using Negative Binomial Distribution.
**
Estimated using Normal Distribution.
***
Additional PPV Refreshers was treated as a continuous variable, and therefore assumes a linear relationship.