Change between pre- and post-intervention period
| Patients with at least | 2013* | 2017* | OR (95% CI) | P value |
| One sleep-inducing drug | 50.3 | 36.3 | 0.56 (0.47 to 0.68) | <0.001 |
| One benzodiazepine | 24.3 | 8.5 | 0.31 (0.23 to 0.4) | <0.001 |
| One Z-drug | 10.7 | 7.0 | 0.62 (0.45 to 0.86) | 0.003 |
| One antidepressant drug | 17.1 | 14.7 | 0.84 (0.65 to 1.07) | 0.143 |
| One neuroleptic drug | 14.1 | 12.8 | 0.90 (0.69 to 1.17) | 0.431 |
| Valerian | 11.5 | 6.7 | 0.55 (0.4 to 0.76) | <0.001 |
| One PIM ** | 21.5 | 8.7 | 0.35 (0.27 to 0.45) | <0.001 |
*All data are percentage of patients receiving the respective drug
**PIM, potentially inappropriate medication.