Table 1.

Prevalence of Helicobacter pylori infection and platelet response after Helicobacter pylori eradication in children with immune thrombocytopenia n (%)

Ref.	Country	Prevalence of Helicobacter pylori infection	Platelet response
Rajantie et al[29]	Finland	0/17 (0)	ND
Jaing et al[30]	Taiwan	9/22 (41)	5/9 (50)
Hayashi et al[31]	Japan	2/10 (20)	1/1 (100)
Yetgin et al[32]	Turkey	11/35 (31)	0/9 (0)
Jaing et al[33]	Taiwan	10/63 (16)	ND
Loffredo et al[34]	Italy	8/39 (21)	0/8 (0)
Neefjes et al[35]	Netherlands	3/47 (6)	3/3 (100)
Wu et al[36]	Taiwan	6/32 (19)	ND
Bisogno et al[37]	Italy	8/24 (33)	1/8 (13)
Hamidieh et al[38]	Iran	4/31 (13)	0/4 (0)
Treepongkaruna et al[39]	Thailand	16/55 (29)	0/7 (0)
Ferrara et al[40]	Italy	8/24 (33)	8/8 (100)
Maghbool et al[41]	Iran	5/30 (17)	5/5 (100)
Russo et al[42]	Italy	50/244 (20)	13/33 (39)

ND: Not described.