Table 3. Mixed effects logistic regression final model of the proportion of respiratory viral panel orders out of total respiratory viral polymerase chain reaction orders.
| Final model variables | β | Standard Error | p -Value | OR | 95% CI |
|---|---|---|---|---|---|
| Reflex testing a | −0.840 | 0.042 | <0.0001 | 0.432 | 0.397–0.469 |
| Noninterruptive CDS a | −1.235 | 0.059 | <0.0001 | 0.291 | 0.259–0.327 |
| CDS: reflex testing b | −0.395 | 0.037 | <0.0001 | 0.673 | 0.668–0.679 |
| Time | 0.008 | 0.001 | <0.0001 | 1.008 | 1.006–1.0110 |
| Influenza incidence | −0.014 | 0.002 | <0.0001 | 0.986 | 0.981–0.991 |
| ED: inpatient setting | −1.195 | 0.068 | <0.0001 | 0.303 | 0.265–0.346 |
| Ambulatory: inpatient setting | −0.416 | 0.044 | <0.0001 | 0.660 | 0.605–0.720 |
| Severe illness | −0.017 | 0.046 | 0.715 | 0.983 | 0.899–1.076 |
| Immunocompromised | 0.244 | 0.038 | <0.0001 | 1.276 | 1.185–1.374 |
| Influenza-like illness | −0.351 | 0.057 | <0.0001 | 0.704 | 0.629–0.788 |
Abbreviations: CDS, clinical decision support; CI, confidence interval; ED, emergency department; OR, odds ratio.
a
Primary predictor variables (intervention periods) compared with the preintervention period.
b
We used a releveled iteration of this model to compare the noninterruptive CDS intervention to the reflex testing intervention. The ED and ambulatory settings are both comparisons to the inpatient setting.