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. 2014 Oct 16;9(10):e110188. doi: 10.1371/journal.pone.0110188

Table 4. Estimated risk of clopidogrel resistance in patients with at least one of the following risk factors: CYP2C19*2, CYP2C19*3, smoking, diabetes mellitus, increase in platelet count adjusted for age and sex.

Risk Factors Adjusted OR* 95% CI p-value
*1/*1 1 - -
*1/*1+Smoking 3.52 1.53–8.09 0.003
*1/*1+DM 3.33 1.62–6.85 0.001
*1/*1+Platelet 1.05 1.00–1.10 0.034
*1/*1+DM+Smoking 7.78 2.68–22.53 <0.001
*1/*1+DM+Platelet 3.26 1.65–6.45 0.001
*1/*1+DM+Smoking+Platelet 8.12 2.82–23.73 <0.001
*1/*2 2.94 1.65–5.26 <0.001
*2/*2 8.78 3.00–25.71 <0.001
*1/*3 11.26 2.47–51.41 0.002
*2/*3 33.15 7.01–156.72 <0.001
*1/*2+Smoking 7.43 2.76–20.05 <0.001
*2/*2+Smoking 22.03 5.44–89.17 <0.001
*1/*3+Smoking 28.06 4.84–162.83 <0.001
*2/*3+Smoking 83.16 12.51–552.97 <0.001
*1/*2+DM 9.19 3.59–23.52 <0.001
*2/*2+DM 27.23 6.90–107.37 <0.001
*1/*3+DM 34.68 6.75–178.06 <0.001
*2/*3+DM 102.77 17.16–615.29 <0.001
*1/*2+Platelet count 3.12 1.82–5.34 <0.001
*2/*2+Platelet count 9.23 3.15–27.03 <0.001
*1/*3+Platelet count 11.76 2.81–49.29 <0.001
*2/*3+Platelet count 34.86 7.30–166.45 <0.001
*1/*2+Smoking+DM 23.05 6.36–83.56 <0.001
*2/*2+Smoking+DM 68.3 12.96–360.05 <0.001
*1/*3+Smoking+DM 86.99 12.30–615.28 <0.001
*2/*3+Smoking+DM 257.79 31.21–2129.62 <0.001
*1/*2+Smoking+DM+Platelet 24.23 6.67–87.95 <0.001
*2/*2+Smoking+DM+Platelet 71.82 13.62–378.77 <0.001
*1/*3+Smoking+DM+Platelet 91.47 12.82–652.52 <0.001
*2/*3+Smoking+DM+Platelet 271.07 32.56–2256.56 <0.001

*Estimated OR for each risk factor category compared to men with no CYP2C19 mutation (wild type), with average age (66.25 year-old), average platelet count (255,900 platelets/mm3), who do not smoke and do not have diabetes. Platelet variable is calculated per ×1,000 platelet increased. Log odds for clopidogrel resistance were calculated using multivariate logistic regression as a function of CYP2C19*2+CYP2C19*3+Smoking+Diabetic Status+increased Platelet Count.

Risk is statistically significant when compared to the reference genotype at p-value<0.05.