Patient(16) COVID-19(14) association(10) patients(10) Mortality(9) age(8) Factor(8) Prevalence(8) death(8) Inflammatory bowel disease(7) Infection(7) IBD(7) evaluate(7) risk(7) hospital(7) variety(6) Odds ratio(6) analyzed(6) Result(6) Comorbidity(6) Analysis(6) reported(6) disease(6) Hospitalization(6) 95% confidence interval(6) was used(5) variable(5) died(5) with COVID-19(5) COVID-19 vaccination(5)