Comparison of the Patients Meeting Inclusion Criteria Who Were and Were Not Analyzed in the Study
| Patients Analyzed (n = 300) | Patients Not Analyzed (n = 89) | P | ||
|---|---|---|---|---|
| Characteristic | No. (%) | n* | No. (%) | Value† |
| * A total of 89 patients were not analyzed, but most of the n values in this column are less than 89 because of missing data. | ||||
| †χ2 test. | ||||
| ‡ Radiographic data were available for only 218 analyzed patients. | ||||
| Placebo treatment | 151 (50.3) | 89 | 47 (52.8) | .68 |
| Age older than mean (37 years) | 129 (43.0) | 63 | 31 (49.2) | .27 |
| Female sex | 170 (56.7) | 70 | 38 (54.3) | .41 |
| Purulent rhinorrhea | 170 (56.7) | 82 | 46 (56.1) | .51 |
| Postnasal drip | 132 (44.0) | 82 | 46 (56.1) | .55 |
| Temperature ≥37.5°C | 46 (15.3) | 82 | 15 (18.3) | .31 |
| Complaints ≥7 days | 138 (46.0) | 82 | 41 (50.0) | .30 |
| Biphasic illness | 173 (57.7) | 82 | 46 (56.1) | .45 |
| Pain when bending | 193 (64.3) | 82 | 55 (67.1) | .37 |
| Unilateral facial pain | 175 (58.3) | 82 | 44 (53.7) | .26 |
| Pain in upper teeth | 54 (18.0) | 82 | 14 (17.1) | .50 |
| Fatigue | 186 (62.0) | 82 | 41 (50.0) | .03 |
| Reduced productivity | 155 (51.7) | 82 | 36 (43.9) | .13 |
| General feeling of illness | 134 (44.7) | 82 | 16 (19.5) | <.001 |
| Abnormal radiograph | 103 (47.2)‡ | 51 | 23 (45.1) | .45 |
| Clinical sum score ≥4 | 156 (52.0) | 82 | 39 (47.6) | .28 |
| Antibiotics in previous month | 2 (0.6) | 81 | 0 (0) | 1.00 |