Association between green tea consumption and smoking status with lung cancer risk.

<p>Data were matched by age and gender, calculated by multiple conditional logistic regression and adjusted for exposure to fume of cooking, and family history of lung cancer.</p>1<p>P<0.01,</p>2<p>P = 0.04; P value was adjusted by multiple testing (bonferroni correction).</p

Risk of lung cancer in association with <i>IGF1</i> (CA)_n repeat genotype by different status of green tea consumption.

<p>Data were matched by age and gender, calculated by multiple conditional logistic regression and adjusted for pack-years of smoking, exposure to fume of cooking, and family history of lung cancer.</p>1<p>P = 0.03,</p>2<p>P = 0.11; P value was adjusted by multiple testing (bonferroni correction).</p

Genotype frequencies of <i>IGF1</i> (CA)_n repeat, <i>IGF2</i> 820 and <i>IGFBP3</i> -202 among cases and controls.

<p>Data were matched by age and gender, calculated by conditional logistic regression.</p>1<p>Data were calculated by two-sided χ² test.</p>2<p>The probability of the χ² test for Hardy-Weinberg equilibrium in control group.</p

Frequency distribution of specific characteristics by case and control status.

<p>Data were matched by age and gender, calculated by conditional logistic regression.</p>1<p>Two-sided χ² test or Fisher's exact test for discrete variables and paired <i>t</i>-test for continuous variables.</p

The joint effect of cumulative smoking dose with <i>IGF1</i> (CA)_n repeat, <i>IGF2</i> 820, <i>IGFBP3</i> -202 genotypes for lung cancer risk.

<p>Data were matched by age and gender, calculated by multiple conditional logistic regression and adjusted for green tea consumption, exposure to fume of cooking, and family history of lung cancer.</p>1<p>P<0.01,</p>2<p>P = 0.08,</p>3<p>P = 0.03; P value was adjusted by multiple testing (bonferroni correction).</p