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Table 1 Characteristics of studies entered into the meta-analysis

From: Association between PNPLA3 rs738409 polymorphism and nonalcoholic fatty liver disease: a systematic review and meta-analysis

Row Author [References] Publication year Area Age of case group Age of control group Case Group Size Control group Size
1 Alam, S [21]. 2017 Bangladesh 39.1 ± 8.6 29.64 ± 7.03 99 75
2 Baclig, M. O [22]. 2014 Philippines 20–70 20–70 32 36
3 Bhatt, S. P [23]. 2013 India 38.2 ± 7 37.1 ± 6.9 162 173
4 Chen, L. Z [24]. 2019 China 26.71 ± 2.81 22.48 ± 3.12 512 451
5 Choobini, Neda [19] 2016 Iran 47.9 ± 12.3 40 ± 13.9 95 183
6 Di Costanzo, A [25]. 2018 Italy 54 49.7 218 227
7 Gorden, A [26]. 2013 America 47 ± 10.6 46 ± 11.8 748 344
8 Hotta, K [27]. 2010 Japan 51.7 ± 15 47.2 ± 14.8 253 578
9 Hudert, C. A [28]. 2019 Germany 14.11 ± 2.15 46.73 ± 16.3 70 200
10 Karoli, R [29]. 2019 India 45 ± 8.2 46 ± 7 100 100
11 Kawaguchi, Takahisa [30] 2012 Japan 52.05 ± 14.85 48.8 ± 16.3 529 932
21 Krishnasamy, N [31]. 2020 India 43.15 ± 9.245 41.99 ± 12.7 105 102
13 Lee, S. S [32]. 2014 Korea 45.3 ± 15.5 45.3 ± 10.6 155 184
14 Li, Y. L. [33] 2012 China 46.7 ± 13.6 43.1 ± 13.4 203 202
15 Liu, W. Y [34]. 2019 China 40.2 ± 12.5 46.6 ± 9.2 349 58
16 Niriella, M. A [35]. 2017 Sri Lanka 42–71 (42–71) 1360 391
17 Niu, T. H [36]. 2014 China 49.7 ± 16.7 47.69 ± 15.68 390 409
18 Oniki, Kentaro [37] 2015 Argentina 61.2 ± 10.5 67.5 ± 6 393 740
19 Park, J. H [38]. 2015 South Korea 48.9 ± 7 49.1 ± 7.2 602 761
20 Peng, X. E [39]. 2012 China 45.33 ± 12.48 43.87 ± 13 553 553
21 Rametta, R [40]. 2014 Italy 49.7 ± 12.1 47.7 ± 12.1 137 260
22 Shang, X. R [41]. 2015 China 11.81 ± 2.20 11.44 ± 2.99 162 865
23 Uygun, A [42]. 2017 Turkey 42.1 ± 11.4 34.1 ± 12.8 216 150
24 Valenti, L. [43] 2012 Italy 49.5 ± 12 48(1 ± 2 144 257
25 Valenti, L. [44] 2010 Italy 46.4 ± 11 48.4 ± 13 253 179
26 Vespasiani-Gentilucci, U [45]. 2016 Italy 51.5 ± 12.3 40.1 ± 13.1 60 125
27 Wang, C. W [18]. 2011 Taiwan 48.11 ± 12.05 45.4 ± 15.93 156 723
28 Wang, X. L. [46] 2016 China 45 ± 13 45 ± 13 376 382
29 Xia, M. F [16]. 2016 China 60 61 1385 2915
30 Yang, H. H [47]. 2018 China 70.95 ± 4.73 72.53 ± 4.73 97 362
31 Zhang, R. N [48]. 2016 China 38.2 ± 13.78 42.64 ± 10.58 59 72