Figure 2. Odds ratios for risk of type 2 diabetes according to the number of risk alleles carried.

As the small sample size, those carrying 0–5 risk alleles were grouped together and those carrying ≥12 risk alleles were likewise done. The combined effect of 9 single nucleotide polymorphisms was analyzed using logistic regression adjusted for age, gender and body mass index. The risk for type 2 diabetes increased with the increased number of risk alleles (P _trend = 2.0 × 10⁻³⁰).