Table 3. Terms and strategy used for literature search.

#1 oxygenation targets	#10 OR/1-9
#2 oxygenation therapy	#11 critically ill patients
#3 higher oxygenation targets	#12 ICU patients
#4 lower oxygenation targets	#13 Severely ill patients
#5 high versus low oxygenation targets	#14 hypoxia patients
#6 lower oxygenation strategies	#15 Oxygen deprived patients
#7 Low-Normal Oxygenation Targets	#16 Patients in critical condition
#8 High normal oxygenation targets	#17 OR/11-17
#9 Low-Normal vs High-Normal Oxygenation Targets	#18 10 AND 17