Table 1: The characteristics of the studies included in this study.
Study Year Location Sample Study design Gender (female:male) MINORS Score
Yang et.al 2009 China 69 R 39:30 17
Esmaili et.al 2006 Iran 70 P NA 20
Boskovic et.al 2014 Serbia 109 R NA 16
Rastogi et.al 2009 India 49 R 39:10 17
Russo et.al 2016 United States 316 R 159:157 16
Tolia et.al 1986 United States 28 U NA 14
Dehghani et.al 2006 Iran 65 P 34:31 16
Mowat et.al 1976 UK 137 P NA 18
Guelrud et.al 1991 Venezuela 57 P 23:34 16
Faweya et.al 1991 Iran 70 P NA 17
Jensen et.al 2012 United States 128 R 53:75 19
Yachha et.al 1996 India 96 P NA 15
Park et.al 1997 S.Korea 73 P NA 18
Poddar et.al 2009 India 101 P 19:82 21
Cox et.al 1987 United States 33 P 14:19 18
Ferry et.al 1985 United States 143 R 59:84 17
Hays et.al 1967 United States 132 R NA 14
Lai et.al 1994 Taiwan 126 P 78:48 16
Manolaki et.al 1983 UK 86 U 39:47 15
Wongsawasdi et.al 2008 Thailand 61 P 34:27 16