Review Article
[Retracted] Serum IL-37 Level Is Associated with Rheumatoid Arthritis and Disease Activity: A Meta-Analysis
Table 1
Characteristics of eligible studies.
| References | Country | Gender | Age | No. | NOS | Experimental | Control | Experimental | Control | Experimental | Control |
| Zhang and Li (2016) [23] | China | M: 17 F: 62 | M: 34 F: 66 | | | 79 | 100 | 7 | Chen and Wang (2014) [19] | China | M: 11 F: 57 | M: 4 F: 16 | | | 68 | 20 | 7 | Song et al. (2018) [16] | China | M: 7 F: 52 | M: 17 F: 29 | | | 59 | 46 | 7 | Yang et al. (2015) [18] | China | M: 83 F: 69 | M: 60 F: 40 | | | 152 | 100 | 7 | Wu et al. (2019) [21] | China | M: 13 F: 12 | NA | | | 25 | 25 | 6 | Wan et al. (2016) [20] | China | M: 10 F: 35 | M: 6 F: 15 | | | 45 | 21 | 6 | Xu et al. (2017) [22] | China | M: 12 F: 47 | NA | | NA | 59 | 30 | 6 | Xia et al. (2015) [17] | China | M: 22 F: 128 | M: 6 F: 44 | | | 150 | 50 | 7 | Ragab et al. (2019) [15] | Africa | M: 8 F: 40 | M: 7 F: 35 | | | 48 | 42 | 6 | Akram et al. (2018) [24] | Pakistan | M: 19 F: 27 | M: 11 F: 9 | | | 46 | 20 | 6 |
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M: male; F: female; No: number; NOS: Newcastle-Ottawa Scale; NA: not available.
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