Baseline characteristics of 8,382 patients with bacteremia, aged 30 to 65 years, categorized according to educational level.

Abbreviation: CCI, Charlson comorbidity index.aHospital volume was defined as the annual number of bacteremia patients treated at the institution.bTeaching hospitals were defined as hospitals directly affiliated with a medical school.缩写：CCI（查尔森合并症指数，Charlson comorbidity index）。a. 医院收治量定义为该医疗机构年度收治的菌血症患者总例数。b. 教学医院指直接隶属于医学院校的医院。