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Table 1 The characteristics of included studies in current meta-analysis

From: Whether the risk of gestational diabetes mellitus is affected by TNF-α, IL-6, IL-10 or ADIPOQ polymorphisms: a meta-analysis

First author, year Country Ethnicity Sample size Genotypes (wtwt/wtmt/mtmt) p-value for HWE NOS score
Cases Controls
TNF-α − 238 G/A rs361525
 Guzmán-Flores 2013 Mexico Mixed 51/44 41/9/1 37/7/0 0.566 7
 Yang 2005 China Asian 120/120 107/13/0 109/11/0 0.599 7
TNF-α − 308 G/A rs1800629
 Feng 2019 China Asian 105/84 94/11/0 78/6/0 0.734 8
 Gueuvoghlanian-Silva 2012 Brazil Mixed 79/168 59/18/2 133/31/4 0.192 7
 Guzmán-Flores 2013 Mexico Mixed 51/44 43/7/1 39/5/0 0.689 7
 Jing 2015 China Asian 124/65 103/14/7 51/11/3 0.039 7
 Montazeri 2010 Malaysia Asian 110/102 103/4/3 94/6/2 < 0.001 8
 Wang 2016 China Asian 50/100 26/14/10 51/38/11 0.341 7
 Yang 2005 China Asian 120/120 91/29/0 106/14/0 0.497 7
IL6 − 174 G/C rs1800795
 Feng 2019 China Asian 50/45 48/2/0 42/3/0 0.817 8
 Gueuvoghlanian-Silva 2012 Brazil Mixed 79/165 47/24/8 104/52/9 0.463 7
 Jing 2018 China Asian 124/65 112/11/1 63/2/0 0.900 7
IL-10 − 819C/T rs1800871
 Kang 2019 Taiwan Asian 72/100 33/32/7 49/41/10 0.742 8
 Montazeri 2010 Malaysia Asian 110/102 38/58/14 37/46/19 0.486 8
IL-10 − 592C/A rs1800872
 Kang 2019 Taiwan Asian 72/100 33/32/7 51/39/10 0.533 8
 Majcher 2019 Poland Caucasian 204/207 124/68/12 115/71/21 0.051 8
 Montazeri 2010 Malaysia Asian 110/102 44/50/16 30/58/14 0.094 8
IL-10 − 1082A/G rs1800896
 Gueuvoghlanian-Silva 2012 Brazil Mixed 80/165 43/29/8 84/66/15 0.700 7
 Kang 2019 Taiwan Asian 72/100 64/8/0 88/12/0 0.523 8
 Montazeri 2010 Malaysia Asian 110/102 81/24/5 74/24/4 0.265 8
ADIPOQ + 45T/G rs2241766
 Daher 2011 Brazil Mixed 79/169 61/15/3 134/32/3 0.505 7
 Feng 2019 China Asian 135/135 53/63/19 70/55/10 0.858 8
 Gao 2016 China Asian 150/150 59/66/25 81/57/12 0.659 8
 Han 2012 China Asian 152/120 63/71/18 64/50/6 0.339 8
 Li 2013 China Asian 264/172 134/113/17 97/66/9 0.604 8
 Li 2017 China Asian 130/130 53/63/14 63/60/7 0.128 8
 Low 2011 Malaysia Asian 26/53 11/13/2 35/17/1 0.512 7
 Luan 2015 China Asian 60/60 33/21/6 29/26/5 0.806 7
 Luo 2019 China Asian 150/150 70/66/14 75/67/8 0.155 7
 Takhshid 2015 Iran Mixed 65/70 37/28/0 54/16/0 0.280 7
 Zhang 2014 China Asian 98/135 38/43/17 73/51/11 0.622 8
 Zheng 2012 China Asian 152/248 63/71/18 116/114/18 0.159 7
ADIPOQ + 276G/T rs1501299
 Gao 2016 China Asian 150/150 66/69/15 75/60/15 0.560 8
 Han 2012 China Asian 152/120 74/66/12 56/53/11 0.760 8
 Li 2017 China Asian 130/130 64/58/8 60/56/14 0.863 8
 Luan 2015 China Asian 60/60 27/26/7 32/25/3 0.499 7
 Luo 2019 China Asian 160/150 90/52/8 84/55/11 0.632 7
 Zhang 2014 China Asian 98/135 43/45/10 68/54/13 0.636 8
 Zheng 2012 China Asian 152/248 74/66/12 121/103/24 0.761 7
  1. wt, wild type; mt, mutant type; HWE, Hardy–Weinberg equilibrium; NOS, Newcastle–Ottawa scale; NA, not available