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Table 1 Characteristics of studies on VDR ApaI rs7975232 (A > 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 AC AA CC AC AA
Dasgupta [14] 2015 India Asian 7 250 250 13 120 117 13 117 120
Jedrzejuk [15] 2015 Poland Caucasian 7 90 98 19 52 19 17 49 32
Mahmoudi [16] 2015 Iran Asian 8 35 35 9 11 15 6 21 8
Mahmoudi [17] 2009 Iran Asian 8 162 162 36 68 58 23 90 49
El-Shal [18] 2013 Egypt Caucasian 8 150 150 22 65 63 18 64 68
Siddamalla [19] 2017 India Asian 7 95 130 32 21 42 25 35 70
Wehr [20] 2011 Australia Caucasian 7 543 145 127 274 142 37 60 48
Cao [21] 2016 China Asian 7 120 120 40 58 22 26 55 39
Santos [22] 2018 Brazil Caucasian 7 190 100 41 88 61 16 48 36