It is very uncertain whether medication reconciliation changes mortality during hospitalisation ( compared with no medication reconciliation (very low certainty).
Medication review showed no clear difference in mortality (all‐cause) Median compared with standard care (low certainty).
Medication reconciliation: pharmacist showed no clear difference in mortality during hospitalisation ( compared with other professionals (moderate certainty).
Professional interventions showed no clear difference in mortality compared with standard/usual care (moderate certainty).
It is very uncertain whether organisational interventions changes mortality compared with standard/usual care (very low certainty).
It is very uncertain whether CPOE/CDSS changes mortality during hospitalisation ( compared with control/paper‐based (very low certainty).