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Multivariable logistic regression for factors predicting an absence of airflow obstruction among all those with a general practice COPD diagnostic code (160 out of 836).
| OR (95% CI) | p-value | |
| Age | 0.99 (0.97–1.02) | 0.71 |
| Sex (male) | 0.97 (0.68–1.39) | 0.87 |
| BMI | 1.10 (1.07–1.14) | <0.001 |
BMI: body mass index.
