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Summary of the association of the rs2241880 polymorphism and IBD determined in the meta-analysis
| Comparisons | No. of studies | Effects model selection | OR (95% CI) | P-value |
| CD vs control | 25 | R | 1.32 (1.26-1.39) | < 0.00001 |
| UC vs control | 14 | F | 1.06 (1.01-1.10) | 0.02 |
| Child-onset CD vs control | 7 | R | 1.35 (1.16-1.57) | 0.0001 |
| Child-onset UC vs control | 2 | F | 0.98 (0.81-1.19) | 0.84 |
R: Random effects model; F: Fixed effects model.
