Table 1.
Visit Characteristics by Phase
| Patient Characteristics | Baseline | Phase 1 | Phase 2 | Phase 3 | P Value |
|---|---|---|---|---|---|
| No. of visits | 400 | 167 | 248 | 206 | |
| No. of patients | 378 | 161 | 233 | 199 | |
| Age, y | 59.56 (18.76) | 59.63 (18.76) | 62.21 (18.12) | 64.25 (17.03) | .01 |
| CCI | 3.9 (3.36) | 4.17 (3.2) | 4.59 (3.32) | 4.74 (3.63) | .01 |
| CURB-65 | 1.25 (1.04) | 1.42 (0.97) | 1.41 (1.04) | 1.48 (1.02) | .03 |
| Flu test ordered, No. (%) | 212 (53) | 49 (29.34) | 196 (79.03) | 51 (24.76) | <.01 |
| Viral pneumonia diagnosis, No. (%) | 28 (7) | 4 (2.4) | 47 (18.95) | 3 (1.46) | <.01 |
| ICU stay, No. (%) | 150 (37.5) | 62 (37.13) | 84 (33.87) | 86 (41.75) | .39 |
| ICU escalation, No. (%) | 33 (8.25) | 11 (6.59) | 13 (5.24) | 11 (5.34) | .39 |
| Ventilation status, No. (%) | 43 (10.75) | 10 (5.99) | 13 (5.24) | 11 (5.34) | .02 |
| No. of laboratory tests per visit | 41.34 (42.97) | 42.83 (47.23) | 38.89 (40.46) | 42.48 (39.51) | .76 |
Values are expressed as mean (SD) unless specified otherwise. P values are based on the Kruskal-Wallis test, analysis of variance, or chi-square test, as appropriate.
Abbreviations: CCI, Charlson comorbidity index; CURB 65 = confusion, urea >7mmol/L, respiratory rate ≥30/min, systolic blood pressure <90 mmHg, and age ≥65 score; ICU, intensive care unit.