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Table 3 Characteristics of studies on VDR TaqI rs731236 (T/C) variant and polycystic ovarian syndrome (PCOS) susceptibility

From: Association of vitamin D receptor gene variants with polycystic ovary syndrome: a meta-analysis

Author Year Country Ethnicity NOS scores Sample size Genotype in cases Genotype in controls
PCOS Control CC CT TT CC CT TT
Dasgupta [14] 2015 India Asian 7 252 401 47 92 113 105 110 186
Jedrzejuk [15] 2015 Poland Caucasian 7 90 98 8 45 37 12 37 49
Mahmoudi [16] 2015 Iran Asian 8 35 35 6 14 15 4 16 15
Mahmoudi [17] 2009 Iran Asian 8 162 162 20 71 71 14 76 72
El-Shal [18] 2013 Egypt Caucasian 8 150 150 36 74 40 20 61 69
Siddamalla [19] 2017 India Asian 7 95 130 24 31 40 17 42 71
Bagheri [24] 2013 Iran Asian 7 38 38 8 14 16 2 19 17
Wehr [20] 2011 Australia Caucasian 7 536 137 72 238 226 23 65 49
Cao [21] 2016 China Asian 7 120 120 11 52 57 8 72 40
Santos [22] 2018 Brazil Caucasian 7 188 99 70 87 31 40 48 11