Symptom severity on day 2–4, according to duration of antibiotic prescribed and antibiotic class
| Symptom severity, mean (SD) | Difference 95% (CI), P-value | Difference controlling for clustering, and antibiotic type and baseline severity score (95% CI), P-value | Difference controlling for propensity score, 95% (CI), P-value | Difference controlling for propensity score in the imputed dataset 95% CI), (P-value | |
|---|---|---|---|---|---|
| Duration of antibiotic prescription | |||||
| 5 days (reference category) | 2.00 (1.22) | – | – | – | – |
| 7 days | 1.99 (1.21) | −0.01 (−0.22 to 0.19, P= 0.896) | 0.01 (−0.18 to 0.19, P= 0.935) | 0.06 (−0.13 to 0.25, P= 0.520) | 0.05 (−0.14 to 0.24, P= 0.587) |
| 10 days | 2.10 (1.20) | 0.10 (−0.15 to 0.35, P= 0.426) | 0.13 (−0.14 to 0.41, P= 0.330) | 0.21 (−0.06 to 0.48, P= 0.119) | 0.20 (−0.06 to 0.48, P= 0.130) |
| Antibiotic class | |||||
| Phenoxymethylpenicillin (reference category) | 2.01 (1.22) | – | – | – | – |
| Other antibiotics | 2.02 (1.15) | 0.01 (−0.17 to 0.20, P= 0.897) | 0.02 (−0.17 to 0.21, P= 0.826) | 0.00 (−0.20 to 0.19, P= 0.965) | −0.02 (−0.21 to 0.16, P= 0.796) |
SD = standard deviation.