Table 2.
Study population | Sample size | Phwe | Chi-square test
|
Logistic regression analysis
|
||||
---|---|---|---|---|---|---|---|---|
Case/control | Minor allele | Frequency | Pobs | OR (95 % CI) | Padj | OR (95 % CI) | ||
Cohort I (China-Central) | 1,075/2,685 | 0.83 | T | 0.073/0.10 | 3.31E–04 | 0.71 (0.59–0.86) | 2.10E–04 | 0.61 (0.47–0.80) |
Cohort II (China-North) | 1,208/824 | 0.18 | T | 0.088/0.12 | 2.63E–03 | 0.73 (0.59–0.90) | 6.00E–03 | 0.69 (0.54–0.90) |
Combined | 2,283/3,509 | 0.36 | T | 0.081/0.10 | 3.57E–05 | 0.76 (0.67–0.87) | 7.86E–05 | 0.73 (0.62–0.85) |
Frequency frequency of the risk allele in case group/control groups, OR odds ratio; 95 % CI 95 % confidential interval
Phwe, P value for Hardy–Weinberg equilibrium (HWE) tests using PLINK version 1.07
Pobs, P value for association before adjusting for covariates by 2 × 2 contingence tables using PLINK version 1.07
Padj, P value for association after adjusting for covariates sex, age, Hyperion, smoking, LDL-C, HDL-C, TC and TG by multiple logistic regression analysis using SPSS v17.0