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Table 4 Association between preexisting respiratory disease/smoking and severe disease outcomes- Mortality, Mechanical ventilation and ICU admission (using stepwise regression, forward selection Wald approach)

From: Preexisting respiratory diseases and clinical outcomes in COVID-19: a multihospital cohort study on predominantly African American population

Mortality ICU Admission Mechanical ventilation
OR (95% CI) p-value OR (95% CI) p-value OR (95% CI) p-value
Preexisting respiratory diseases
 1.38 (1.10–1.74)* 0.005 1.34 (1.08–1.66)** 0.009 1.34 (1.07–1.69)*** 0.01
Smoking
 NS   1.28(1.04–1.57)^ 0.02 NS  
  1. *Variables in the optimal model- age, sex, BMI, diabetes, chronic kidney disease and preexisting respiratory diseases
  2. **Variables in the optimal model- age, sex, BMI, diabetes, chronic kidney disease and preexisting respiratory diseases
  3. ***Variables in the optimal model- age, sex, BMI, diabetes, hypertension, and preexisting respiratory diseases
  4. ^Variables in the optimal model- age, sex, BMI, diabetes, chronic kidney disease and smoking
  5. OR odds ratio, CI confidence interval, NS nonsignificant
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