Prevalence of fatty liver disease and the economy in China: A systematic review

Table 3 Characteristics of surveys included in the study

Ref.	Publication year	Survey year	Years in analysis	GDP per capita (Yuan)	Diagnosis criteria	Ages of subjects
Shi et al	2007	NA	2005	29985	NA	18
Tang et al	2007	2006	2006	16526	Self-defined	18
Zhang et al	2007	NA	2006	8762	NA	20
Qu et al	2011	2008	2008	25445	Standards of Ultrasonic Medicine (Chunzheng Wang, 2006, People's Medical Publishing House)	35-74
Shang et al	2004	2003	2003	8936	Chinese Medical Association, 2002 Guideline	NA
Yi et al	2011	NA	2009	32484	6th Chinese Academic Materials, People's Medical Publishing House	18
Peng et al	2007	2006	2006	14956	Ultrasonic Medicine (Yong-Chang Zhou, 2006, Scientific and Technical Documentation Press)	NA
Zheng et al	2011	2008	2008	31555	Chinese Medical Association, 2006 Guideline	18
Chen et al	2006	NA	2004	15806	Chinese Medical Association, 2002 Guideline	20
Ma et al	2007	NA	2005	41166	Chinese Medical Association, 2002 Guideline	18
Yu et al	2010	2008	2008	49744	Ultrasonic Medicine (Yong-Chang Zhou, 2006, Scientific and Technical Documentation Press)	20
Zhang et al	2011	2010	2010	51653	NA	NA
Lu et al	2011	2009-2010	2009	79383	Chinese Medical Association, 2002 Guideline	18
Yan et al	2007	2005	2005	14847	Chinese Medical Association, 2006 Guideline	18-81
Huang et al	2007	2005	2005	19061	Chinese Medical Association Guideline, unknown year	NA
Fan et al	2005	2002-2003	2002	33958	Chinese Medical Association, 2002 Guideline	16
He et al	2006	2001-2005	2003	28162	Chinese Medical Association, 2002 Guideline	16
Shi et al	2011	2007	2007	28131	Chinese Medical Association, 2006 Guideline	18
Zhou et al	2007	2005	2005	41166	Chinese Medical Association, 2006 Guideline	18
Zhou et al	2009	NA	2007	61032	Chinese Medical Association, 2002 Guideline	18
Zhou et al	2014	2008	2008	66932	Chinese Medical Association, 2002 Guideline	35
Pan et al	2014	2012-2013	2012	106909	Self-defined	20
Qin et al	2012	2011	2011	82560	Chinese Medical Association, 2010 Guideline	40-70
Wang et al	2007	1995-2004	1999	14751	Chinese Medical Association, 2002 Guideline	18
Zhou et al	2014	2012	2012	85373	Chinese Medical Association, 2002 Guideline	35
Luo et al	2007	NA	2005	5439	Chinese Medical Association, 2002 Guideline	18
Yan et al	2013	NA	2011	80394	Chinese Medical Association, 2006 Guideline	20

NA: Not applicable.