Selected set of 16 clinical rules
| No of safety alerts: that is patients triggered by clinical rule | No of patients with a corresponding error in medication review (%) | |
| 1. Clearance <50 ml/min or serum creatinine >150 μmol/l | 129 | 23 (18) |
| 2. Serum creatinine increase of >50 μmol/l or of >50% | 37 | 11 (30) |
| 3. Use of cefuroxime and clearance <50 ml/min | 7 | 0 (0) |
| 4. Use of ceftazidime and clearance of <100 ml/min | 2 | 0 (0) |
| 5. Use of ciprofloxacin and clearance of <25 ml/min | 11 | 2 (18) |
| 6. Use of ranitidine and clearance of <50 ml/min | 5 | 1 (20) |
| 7. Use of cetirizine and clearance of <10 ml/min | 0 | 0 (−) |
| 8. Use of sulfonamides urea derivate and clearance of <10 ml/min | 0 | 0 (−) |
| 9. Gabapentine of pregabaline and clearance of <50 ml/min | 1 | 0 (0) |
10. Use of digoxin >0.0625 mg once daily and
| 14 | 0 (0) |
| 11. A serum level of an aminoglycoside or vancomycin | 3 | 0 (0) |
| 12. Use of opioid and no prescription for laxative | 45 | 26 (58) |
| 13. Use of ciprofloxacin or norfloxacin and use of antiepileptic | 2 | 0 (0) |
| 14. Use of bisphosphonate and a drug which has an effect on absorption | 29 | 3 (10) |
| 15. Use of iron and a drug which forms a complex with iron | 11 | 6 (55) |
| 16. Use of azathioprine (check dose) | 17 | 0 (0) |
| Total | 313 | 72 (23) |