Reference	Sample Size	Respondent Selection and Recruitment	Inclusion/ Exclusion Criteria	Response Rates to the Instrument Used	Loss to Follow-Up	Missing Data	Any Other Problems with the Study
Grann (1998)	54	not reported	Yes	not repoted	No follow-up	not repoted	small samples for generalization
Hürny (1998)	83	Yes	Yes	100%	No follow-up	not reported	population (patient) from various countries and cultures
Jansen (1998)	70	Yes	Yes	36%	No follow-up	7%	small samples for generalization
Grann (1999)	135	Yes	Yes	not reported	No follow-up	not reported	representative of the health states
Chie (2000)	979	Yes	Yes	not reported	No follow-up	not reported	low response rate
Jansen (2000)	41	Yes	Yes	76%	24%	not reported	small sample for generalization
Jansen (2000)	70	Yes	Yes	64%	22%	not reported	small sample for generalization
Polsky (2002)	784	Yes	Yes	68%	not reported	5%	selection bias for generalization
Jansen (2004)	448	Yes	Yes	62%	No follow-up	10%	selection bias for generalization
Conner-Spady (2005)	52	Yes	Yes	92%	14%	not reported	small sample for generalization
Lloyd (2006)	106	Yes	not reported	not reported	No follow-up	6%	health state validation unclear
Milne (2006)	50	Yes	Yes	not reported	No follow-up	No	small sample for generalization
Schleinitz (2006)	156	Yes	Yes	78%	No follow-up	not reported	language difference
Lidgren (2007)	345	Yes	Yes	96%	No follow-up	6%	selection bias
Mansel (2007)	not reported	not reported	Yes	not reported	not reported	not reported	lack of information
Buyukdamgaci-Alogan (2008)	30	Yes	Yes	not reported	No follow-up	not reported	small sample for generalization
Kimman (2009)	192	Yes	Yes	87%	no follow-up	not reported	small subgroup analysis for generalization
Freedman (2010)	1050	Yes	Yes	not reported	54%	not reported	representative of the health states
Haines (2010)	89	Yes	Yes	76%	18%	not reported	low response and follow-up rate
Kimman (2011)	299	Yes	Yes	not reported	12%	1%	selection bias
Cheng (2012)	152	Yes	Yes	not reported	No follow-up	not reported	large amount of missing data
Kim (2012)	199	Yes	Yes	100%	no follow-up	no exist	selection bias for generalization
Shih (2012)	20	Yes	Yes	61%	No follow-up	no exist	small sample for generalization
Frederix (2013)	200	Yes	Yes	not reported	No follow-up	No exist	representative of the health states
Moro-Valdezate (2013)	364	Yes	Yes	66%	34%	Not reported	lack of baseline HRQOL measurements prior to treatment
Farkkila (2014)	27	Yes	Yes	not reported	No follow-up	not reported	small sample for generalization
Matter-Walstra (2014)	92	Yes	Yes	not reported	No follow-up	No exist	language difference
Tan (2014)	64	Yes	Yes	68%	No follow-up	not reported	small sample
Kim (2015)	827	Yes	Yes	83%	No follow-up	21%	generalizability (one hospitals selected)
Kim (2015)	299	Yes	Yes	90%	No follow-up	not reported	representative of the health states
Luo (2015)	269	Yes	Yes	94%	6%	1%	Selection bias
Pickard (2016)	50	Yes	Yes	not reported	No follow-up	No exist	small sample
Kim (2017)	509	Yes	Yes	not reported	No follow-up	not reported	selection bias
Rautalin (2018)	840	Yes	Yes	59%	No follow-up	No exist	low response rate
Li (2019)	608	Yes	Yes	not reported	No follow-up	2%	selection bias