Table 6

Adjusted ORs for development of pneumothorax with BHD taken as the primary exposure variable adjusted for each potential confounding variable (multivariate analysis)

BHD adjusted for each variableAdjusted OR (95% CI)aLRb χ2P
BHD adjusted for age
 Not affected with BHD1
 Affected with BHD50.3 (6.4–392)0.0001
BHD adjusted for gender
 Not affected with BHD1
 Affected with BHD32.6 (4.3–245)0.0001
BHD adjusted for smoking status
 Not affected with BHD1
 Affected with BHD32.2 (4.3–242)0.0001
BHD adjusted for hypertension
 Not affected with BHD1
 Affected with BHD32.7 (4.3–246)0.0001
BHD adjusted for BMI
 Not affected with BHD1
 Affected with BHD32.2 (4.3–243)0.0001
BHD adjusted for site
 Not affected with BHD1
 Affected with BHD32.1 (4.2–244)0.0001
  • a CI, confidence interval.

  • b Likelihood ratio probability associated with the contribution of BHD in the logistic regression equation after adjusting for the variable indicated.