Table 2.

HEV seroprevalence in special groups

Authors, references	Year published	Year	City	Study type	Target population	Sample size	Prevalence	CG sample size	CG prevalence (IgG) (%)	Power of study	Remarks
Aksu et al. [25]	1999	1996–1998	İzmir	C-S	Behcet’s disease	124	7%	51	8	NA	p > 0.05
Atabek et al. [26]	2003	NA	Konya	C-S	Diabetic children	63	6.3%	63	7.9	NA	p > 0.05
Aydin et al. [27]	2016	NA	Erzurum	C-S	Animal workers	103	35.9%	92	4.4	NA	p < 0.05. Most frequent in animal husbandry, poultry. No seropositivity in veterinaries
Bayram et al. [28]	2007	2004	Gaziantep	C-S	Adult CHB and CHC	364	CHB: 13.7%, CHC: 54%. HEV RNA (+); CHB: 14.7%, CHC: 54.6%	178	15.7	NA	HEV higher in CHC patients (p < 0.05), speculated that HCV and HEV may share the same way of transmission
Cengiz et al. [29]	1996	NA	Samsun	C-S	Adult HD patients	72	13.9%	55	5.5	NA	p < 0.05
Cevrioglu et al. [30]	2004	2000–2002	Afyon	C-S	Pregnant women	245	12.6%	76	11.8	NA	p > 0.05
Ceylan et al. [31]	2003	NA	Diyarbakir	C-S	Agricultural workers	46	34.8%	45	4.4	NA	p < 0.05
Coursaget et al. [32]	1993	NA	Istanbul	C-S	Acute non-A non-B non-C hepatitis	18	11%	NA		NA	Probable prevalence 1–2%. Letter to a study
Koksal et al. [33]	1994	1991–1992	Diyarbakir	C-S	Acute non-A non-B hepatitis	53	73.3%	100	0	NA
Oncu et al. [34]	2006	NA	Aydin	C-S	Pregnant women	386	7%	NA		NA	Low prevalence in high-educated
Sencan et al. [35]	2004	1999	Duzce	C-S	Children post-earthquake camps	476	4.7–17.2%	NA		NA	Duzce and Golyaka camps have significantly different rates attributed to being the first camp just after the earthquake with lower sanitation status
Uçar et al. [36]	2009	NA	Hatay	C-S	Adults HD patients	92	20.6%	NA		NA
Yayli et al. [37]	2002	NA	Isparta	C-S	Children	340	9%	NA		NA	5–16 age range. After a hepatitis outbreak in the village, some children had symptoms and higher ALT

CG Control group, C-S cross-sectional, NA not available, CHB chronic hepatitis B, CHC chronic hepatitis C, HD hemodialysis