Percentage of Episodes of Respiratory Tract Infection Treated With Antibiotics During Follow-up in Intervention and Control Arms
| RTI Episodes Treated With Antibiotics | |||||
|---|---|---|---|---|---|
| Control Group % (95% CI) | Intervention Group % (95% CI) | Uncorrected Difference | Corrected Differencea | P Valuea | |
| C-reactive protein test | 35.7 (29.5–42.0) | 30.7 (25.0–36.4) | −5.0 | −4.1 | .36 |
| Communication skills training | 39.1 (33.1–45.1) | 26.3 (20.6–32.0) | −12.8 | −10.4 | .02 |
Note: intervention included point-of-care C-reactive protein testing or training in enhanced communication skills.
↵a P values from multilevel linear regression model to account and correct for variation at the level of family physician, and to adjust for both interventions, RTI-episodes treated with antibiotics during baseline period, COPD comorbidity.