Review Article
Association between IL-4 and IL-4R Polymorphisms and Periodontitis: A Meta-Analysis
Table 6
Meta-analysis of the association between the IL-4 Q551R polymorphism and periodontitis.
| Genetic model and subgroup | Number of studies | Heterogeneity | Pooled results | | (%) | OR | 95% CI | for OR |
| R versus Q | | | | | | | Overall | 4 | 0.38 | 3.0 | 1.51 | (1.10–2.07) | 0.01 | CP | 3 | 0.22 | 33.2 | 1.42 | (0.89–2.27) | 0.15 | AgP | 1 | NA | NA | 1.62 | (0.95–2.78) | 0.08 | Smokers | 3 | 0.28 | 20.6 | 1.59 | (1.14–2.22) | <0.05 | Nonsmokers | 1 | NA | NA | 1.14 | (0.51–2.54) | 0.75 | RR versus QQ | | | | | | | Overall | 4 | 0.44 | 0.0 | 1.46 | (0.64–3.35) | 0.37 | CP | 3 | 0.38 | 0.0 | 1.13 | (0.41–3.11) | 0.81 | AgP | 1 | NA | NA | 2.46 | (0.59–10.32) | 0.22 | Smokers | 3 | 0.32 | 11.6 | 1.14 | (0.51–2.54) | 0.27 | Nonsmokers | 1 | NA | NA | 0.83 | (0.12–5.61) | 0.85 | QR versus QQ | | | | | | | Overall | 4 | 0.67 | 0.0 | 1.79 | (1.21–2.65) | <0.05 | CP | 3 | 0.52 | 0.0 | 1.92 | (1.19–3.11) | <0.05 | AgP | 1 | NA | NA | 1.57 | (0.80–3.05) | 0.19 | Smokers | 3 | 0.49 | 0 | 1.84 | (1.21–2.80) | <0.05 | Nonsmokers | 1 | NA | NA | 1.50 | (0.52–4.36) | 0.46 | ( RR + QR) versus QQ | | | | | | | Overall | 4 | 0.53 | 0.0 | 1.75 | (1.21–2.54) | <0.05 | CP | 3 | 0.34 | 7.4 | 1.79 | (1.13–2.83) | 0.01 | AgP | 1 | NA | NA | 1.67 | (0.89–3.15) | 0.11 | Smokers | 3 | 0.39 | 0 | 1.82 | (1.22–2.72) | <0.05 | Nonsmokers | 1 | NA | NA | 1.34 | (0.49–3.66) | 0.56 | RR versus (QQ + QR) | | | | | | | Overall | 4 | 0.48 | 0.0 | 1.20 | (0.55–2.64) | 0.65 | CP | 3 | 0.47 | 0.0 | 0.90 | (0.34–2.37) | 0.83 | AgP | 1 | NA | NA | 2.15 | (0.52–8.89) | 0.29 | Smokers | 3 | 0.35 | 5.4 | 1.35 | (0.56–3.25) | 0.53 | Nonsmokers | 1 | NA | NA | 0.71 | (0.11–4.60) | 0.72 |
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