Characteristics of Patients With Complete Follow-up Data in Intervention and Control Arms
| Characteristics | CRP Test (n = 203) | No CRP Test (n = 176) | P Valuea | Communication Skills Training (n = 178) | No Communication Skills Training (n = 201) | P Valuea |
|---|---|---|---|---|---|---|
| Women, No. (%) | 119 (58.6) | 116 (65.9) | .15 | 118 (66.3) | 117 (58.2) | .11 |
| Age, mean (SD), y | 49.4 (14.5) | 50.4 (15.6) | .53 | 51.0 (15.3) | 48.8 (14.6) | .12 |
| Comorbidity, No. (%) | ||||||
| COPD | 22 (10.8) | 26 (14.8) | .25 | 20 (11.2) | 28 (13.9) | .43 |
| Asthma | 27 (13.3) | 28 (15.9) | .47 | 27 (15.2) | 28 (13.9) | .73 |
| Antibiotics prescribed, No. (%) | ||||||
| At index visit of trial | 64 (31.5) | 96 (54.5) | <.01 | 49 (27.5) | 111 (55.2) | <.01 |
| During 28-day follow-up trial | 92 (45.3) | 105 (59.7) | <.01 | 69 (38.8) | 128 (63.7) | <.01 |
Note: for the intervention arm, the family physician performed C-reactive protein testing or had communication skills training.
COPD = chronic obstructive pulmonary disease; CRP = C-reactive protein.
↵a P values come from Mann-Whitney test (age) or χ2 test (other variables) comparing intervention group with no intervention group.