Rate#: incidence rate per 10 000 person-years; Crude
HR: relative hazard ratio; Adjusted HR†: adjusted
hazard ratio after control for age, sex, and comorbidities of CAD,
hypertension, diabetes, hyperlipidemia, CVA, heart failure, COPD, CKD,
alcohol-related diseases, cirrhosis, and biliary stone;
Comorbidity§: patients with CAD, hypertension,
diabetes, hyperlipidemia, CVA, heart failure, COPD, CKD, alcohol-related
diseases, cirrhosis, or biliary stone were classified as the comorbidity
group.
CAD, coronary artery disease; CI, confidence interval; CKD, chronic
kidney disease; COPD, chronic obstructive pulmonary disease; CVA,
cerebral vascular disease; PY, person years; SD, standard deviation
*P < .05, **P < .01, ***P< .001
Table 5. Comparison of the HR for Ulcerative Colitis and Crohn’s Disease
Among Patients Who Underwent Appendectomy at Different Ages