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