Table 1. Search strategy in Medline performed in January 2014.

Limits: adults, English, Dutch.

Quality indicator	AND	Antibiotic	AND	Critical care	AND	Development
1. quality indicator[Mesh] OR		11. Antibiotic* OR		22. Critical care[Mesh] OR		26. develop*
2. quality criterion OR		12. “Antimicrobial agents” OR		23. Intensive care units[Mesh] OR
3. quality measure* OR		13. “Antimicrobial drugs” OR		24. “Intensive care medicine” OR
4. performance indicator OR		14. “Antibacterial drugs” OR		25. Critical illness[Mesh]
5. performance measure OR		15. “Antibacterial therapy” OR
6. outcome measure OR		16. “Antimicrobial therapy” OR
7. outcome indicator* OR		17. Anti-bacterial agents[Mesh] OR
8. audit OR		18. Anti-infective agents[Mesh] OR
9. outcome assessment[Mesh] OR		19. “Antibiotic use” OR
10. process assessment[Mesh]		20. “antimicrobial chemotherapy” OR
		21. stewardship[tw] OR
		22. appropriate antibiotic use[tw]

* truncation symbol = different word variations can be searched for (singular / plural / conjugations).