Fig. 1
From: BPIFB4 rs4339026 A > G polymorphism impacts COPD susceptibility in the Kashi population, China
Analysis of genotypes of BPIFB4 rs4339026 A > G. (a) Case-control study of BPIFB4 rs4339026 A > G. 541 COPD patients in case group, and 533 healthy people in control group. The call rate for rs4339026 of BPIFB4 was 99.91% (1,074/1,075). a Logistic regression: Corrected for sex, age, BMI, smoking status, FEV1% and FEV1/FVC. *P < 0.05, **P < 0.01. (b) Stratified analysis of smokers in the case–control study. b Logistic regression: Corrected for sex, age, BMI, FEV1% and FEV1/FVC. *P < 0.05, **P < 0.01. (c) Stratified analysis of non-smokers in the case–control study. b Logistic regression: Corrected for sex, age, BMI, FEV1% and FEV1/FVC. *P < 0.05, **P < 0.01. OR Odds Ratio, 95%CI 95% confidence interval, NA Not Available.
