Table 3 Primary analysis and sensitivity analysis of misuse
Pre-teaching | Post-teaching | Pre-to-post change (95%CI) | p value | Number needed to treat | |
|---|---|---|---|---|---|
Misuse (primary analysis) | 27 (43.5%) | 8 (12.9%) | − 30.6% (− 17.6% to − 43.7%) | < 0.001 | 3.3 |
Misuse (sensitivity analysis) | 46 (45.5%) | 27 (26.7%) | − 18.8% (− 10.2% to − 27.4%) | < 0.001 | 5.3 |
Errors | 3.1 ± 1.5 | 1.7 ± 1.4 | − 1.4 (− 1.8 to − 1) | < 0.001 |