Table 4. A Review of the Literature on Previous Similar Studies in Iran.

Province or City	Author	Year	Sample Size	HBsAg Positive, %	HBc Antibody Positive, %	Main Risk Factors
Birjand	Ziaee et al. (3)	2015	5235	1.6	15	Male, age, drug abuse, family history
Tehran	4 studies (4, 11-13)	2001 - 2007	7870	2.2	N/A	Male
East Azerbaijan	3 studies (4, 14, 15)	2001 - 2005	5320	1.3	N/A	Male
Golestan	3 studies	2003 - 2007	4931	6.3	N/A	Male
Isfahan	Ataie	2006	816	1.3	N/A
Hormozgan	Merat (3)	2006	1988	2.4	N/A	Male
Zahedan	Ansari-Moghaddam (6)	2008 - 2009	2578	2.5	N/A	Male, married, older age
Kermanshah	Kazerani	1999 - 2003	6820	1.3%	N/A	N/A
Nahavand	Alizadeh et al. (16)	2006	1824	2.3	7.8	History of surgery or imprisonment
Kurdistan	Alavian et al. (17)	2012	1613	0.8	5.02	Older age, marriage, intrafamilial HBV transmission
Mashhad	Fathimoghaddam et al. (5)	2011	1652	1.39	N/A	Older age, married, Afghani, and traditional cupping
Amol	Keyvani et al. (18)	2014	6146	0.9	10.5	A history of hepatitis among first--degree family members, a history of tattooing, a history of previous hepatitis, male sex, and age
Kohgiloyeh and Boyerahmad	Khosravani et al. (19)	2009 - 2010	2009	1.2	N/A	Male, drug abuse, level of education, and place of residence
Kerman	Hayatbakhsh et al. (20)	2011 - 2012	370	1.1	8.9	Living status
Yazd	Javadzadeh Shahshahani et al. (21)	2013	254760	0.25	N/A	Recipient of allogenic whole blood donation
Mazandaran)	Mousavi et al. (22)	2011 - 2013	2650	0.08	N/A	N/A
Chaharmahal and Bakhtiari	Moezzi et al. (23)	2012 - 2013	3000	1.3	N/A	Male, aged over 55 y, farmer, and nonpublic occupation
Sistan Baluchestan	Salehi et al. (24)	2012	3989	3.38	23.5	Marital status and addiction

Abbreviation: N/A, Not available