#	Searches	Results
1	exp *Pulmonary Disease, Chronic Obstructive/	44623
2	(chronic adj2 obstructi* adj5 (airflow or airway or bronchitis or bronchopulmonary or lung)).ti.	5592
3	(obstructi* adj2 (lung disease* or pulmonary disease* or pulmonary disorder* or respiratory disease* or respiratory tract disease*)).ti.	24427
4	(COAD or COPD).ti.	16581
5	*Chronic Obstructive Lung Disease/	44226
6	or/1-4	55292
7	or/2-5	54942
8	*Health Status Indicators/ or *“Quality of Life”/	100444
9	*Economics/	20958
10	exp *“Costs and Cost Analysis”/	87425
11	(econom* or cost* or pharmacoeconomic* or pharmaco-economic*).ti.	210443
12	((cost* adj utilit*) or costutilit*).ti, ab.	4145
13	(EuroQol* or Euro Qol* or EQ5D* or EQ 5D*).mp.	5681
14	(hui* or health utilities index* or health utilities indic* or health utility index* or health utility indic*).mp.	12126
15	(standard adj2 gamble*).mp.	1222
16	(Time Trade Off* or Time TradeOff* or TTO*).mp.	2786
17	(“preference based quality of life” or ((“preference based” or “patient based”) adj (utilit* or measure?)) or health preference? or preference elicit* or (patient* adj (utilit* or preference*))).tw.	11667
18	*Economic Evaluation/ or “Cost Utility Analysis”/	4854
19	or/8-17	397517
20	or/11-18	242114
21	6 and 19 use prmz	1035
22	7 and 20 use emez	575
23	21 or 22	1610
24	limit 23 to yr=“2009 -Current”	383
25	remove duplicates from 24	295