highly significantp < 0.001
After adjusting for age, sex, severity of lung disease, BMI, pack-year smoking, current smoking status and IRSAD, risk of death remained highly significant (HR = 1.64, 95% CI = 1.33–2.35, p < 0.001).
After adjusting for age, sex, severity of lung disease, BMI, pack-year smoking, current smoking status and IRSAD, risk of death remained highly significant (HR = 1.64, 95% CI = 1.33–2.35, p < 0.001).