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