Table 1.

A list of the studies included in the meta-analysis

Author (year)	Study year	Sample size	No. positive	Apparent prevalence
Sheferaw et al. 2015 [32]	2014	1838	133	7.24
Birhanu et al. 2015 [19]	2013	493	36	7.30
Lelisa et al. 2015 [28]	2014	405	22	5.43
Terefe et al. 2015 [36]	2014	409	25	6.11
Abera et al. 2014 [16]	2014	384	24	6.25
Biyazen et al. 2014 [21]	2014	384	11	2.86
Lelisa et al. 2014 [27]	2010	389	42	10.80
Tamiru et al. 2014 [35]	2013	436	6	1.38
Tafese et al. 2012 [34]	2011	386	33	8.55
Tesfaye et al. 2012 [37]	2009	1260	153	12.14
Fikru et al. 2012 [24]	2011	1524	81	5.31
Bishaw et al. 2012 [20]	2011	384	30	7.81
Bekele & Nasir, 2011 [18]	2011	384	33	8.60
Mekuria & Gadissa, 2011 [29]	2009	540	67	12.41
Dagnachew & Shibeshi, 2011 [23]	2009	368	33	8.97
Tadesse & Tsegaye, 2010 [33]	2009	250	11	4.40
Kebede & Animut, 2009 39	2008	3200	322	10.06
Miruk et al. 2008 31	2007	341	40	11.73
Mihret & Mamo, 2007 30	2005	3360	275	8.20
Sinshaw et al. 2006 [48]	2004	1509	92	6.10
Cherenet et al. 2004 22	2001	7079	501	7.08
Tewelde et al. 2004 38	2001	904	70	7.74
Kidanemariam et al. 2002 26	2001	1008	151	14.98
Afewerk et al. 2000 17	1997	484	83	17.15