From: Cytokine gene polymorphisms and atopic disease in two European cohorts. (ECRHS-Basel and SAPALDIA)
 |  | Hay fever | |||
---|---|---|---|---|---|
Genotype | Â | cases/controls 3) | Odds Ratio | 95% Confidence Interval | P-value |
IL6(-174G>C) | GG | 393/1112 | 1 | Â | -- |
 | GC | 537/1386 | 1.1 | 0.95 – 1.29 | 0.21 |
 | CC | 169/451 | 1.04 | 0.84 – 1.28 | 0.74 |
IL18(-137G>C) | GG | 555/1619 | 1 | Â | -- |
 | GC | 468/1117 | 1.24 | 1.07 – 1.43 | 0.004 |
 | CC | 82/217 | 1.08 | 0.82 – 1.42 | 0.60 |