Adjusted* effect of interventions by outcome
| Variable | Antimicrobial; OR (95% CI) | ||||
|---|---|---|---|---|---|
| First-line | Nitrofurantoin | Quinolone | Trimethoprim | Co-amoxyclav | |
| Control | Reference | Reference | Reference | Reference | Reference |
| Arm A | 2.7 (1.8 to 4.1) | 4.5 (2.7 to 7.3) | 0.6 (0.3 to 1.00) | 0.3 (0.1 to 0.6) | 0.4 (0.3 to 0.7) |
| Arm B | 2.0 (1.3 to 3.0) | 3.5 (1.9 to 6.3) | 0.7 (0.3 to 1.4) | 0.2 (0.1 to 0.3) | 0.3 (0.2 to 0.6) |
| Age, per yr | 1.0 (0.99 to 1.0) | 1.0 (1.0 to 1.0) | 1.0 (1.0 to 1.0) | 1.0 (0.98 to 1.0) | 0.99 (0.99 to 1.0) |
| Sex, male | 0.5 (0.4 to 0.7) | 0.6 (0.4 to 0.8) | 2.4 (1.5 to 3.9) | 0.7 (0.4 to 1.2) | 0.9 (0.5 to 1.7) |
| Medical card | 1.1 (0.9 to 1.3) | 1.0 (0.8 to 1.3) | 0.7 (0.4 to 0.98) | 1.2 (0.9 to 1.5) | 1.1 (0.8 to 1.5) |
| ICC | 0.048 | 0.045 | 0.035 | 0.031 | 0.005 |
Note: CI = confidence interval, ICC = intraclass correlation (measure of resemblance among practices), OR = odds ratio.
↵* ORs were adjusted for age, sex, medical card status and number of antimicrobial prescriptions per 100 practice consultations.