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Table 3 Multivariate logistic regression for predictors of asthma among subjects with COPD:

From: The clinical features of the overlap between COPD and asthma

Variable

OR [CI]

p-value

African-American race

2.05 [1.31, 3.21]

0.002

Female gender

0.94 [0.63, 1.40]

0.76

Older age (per decade)

0.76 [0.60, 0.97]

0.03

Pack years of smoking (per 10 pack years)

0.86 [0.78, 0.95]

0.002