Table 2. Characteristics of the different cross-sectional studies.

Study ID	Survey Year	Method	City	Age	H. pylori prevalence (%)	Related target	Score
01 Wu FJ 2018 [19]	2016–2017	UBT	Zhengzhou	48	200/600(0.33)	MS	7
02 Wan ZC 2018[20]	2016	UBT	Wuhan	43	1687/5168(0.33)	HTN	9
03 Wei WZ 2018[21]	2016	UBT	Shijiazhuang	20–91	861/1613(0.53)	BL	8
04 Wu YH 2017[22]	2016	UBT	Qianjiang	≥18	353/823(0.43)	BMI	8
05 Gao Y 2018[23]	2015–2016	UBT	Wuhan	≥20	2304/6869(0.35)	BL	8
06 Chen LW 2018[24]	2014–2016	UBT	Taiwan	>30	1358/2604(0.52)	obesity	10
07 Yang W 2016[25]	2014	RUT	Shuozhou	73.2	80/191(0.42)	MS	9
08 Li H 2016[26]	2014	UBT	Zhejiang	47	3732/8308(0.45)	FLD	9
09 Fan N.2018[27]	2013–2014	UBT	Shanghai	48.3	17323/28171(0.61)	NAFLD	9
10 Kong XL 2017[28]	2013–2014	S	Jinan	48.6	4541/22044(0.21)	CKD	10
11 Sun Y 2016[29]	2013–2014	UBT	Shanghai	46.1	9836/22103(0.45)	BL	9
12 Xu CF 2014[30]	2013	UBT	Zhejiang	46	3859/8820(0.44)	BMI	8
13 Han X 2016[31]	2013	UBT	Shiyan	64	15295/30810(0.5)	T2MD	9
14 Ma ZH 2013[32]	2012	S	Beijing	48	1492/3085(0.48)	BL	9
15 Xu MY 2017[33]	2012–2016	S	Beijing	45	7804/17791(0.44)	anemia	9
16 Song Y 2015[34]	2011–2013	UBT	Guiyang	21–84	508/1107(0.46)	BL	8
17 Liu A 2013[35]	2011.1–12	UBT	Beijing	47	3481/11514(0.3)	HbA1c	8
18 Lei YH 2017[36]	2011	UBT	Wuhan	70.5	134/427(0.31)	MS	8
19 Zhang Y 2015[37]	2010–2012	UBT	Wuhan	52.2	839/2050(0.41)	obesity	9
20 Yang GH 2014[38]	2000–2009	B	Taiwan	≥60	182/324(0.56)	obesity	10
21 Ran L 2011[39]	2009.	S	Chongqing	21–65	651/2188(0.3)	/	8
22 Zou D 2011[40]	2007–2008	S	Shanghai	50	733/1022(0.72)	GD	10

UBT: urea breath test; RUT: rapid urease test; S: Serology; B: biopsy or histology; BMI: body mass index; FLD: fatty liver disease; NAFLD: Nonalcoholic fatty liver disease; BL: Blood lipid; HTN: hypertension MS: metabolic syndrome HbA1c: glycosylated hemoglobin levels; CKD: chronic kidney disease; GD: gastrointestinal disease.