A 15-year Cohort Study on Risk Factors of Mortality in Patients With Intestinal Tuberculosis

Inclusion Criteria: 1. Aged ≥18 years old (no upper age limit) at the time of intestinal tuberculosis diagnosis; 2. Diagnosed with intestinal tuberculosis in accordance with clinical diagnostic criteria (combined with clinical manifestations, laboratory examinations, imaging findings, and/or pathological results); 3. For the Retrospective Intestinal Tuberculosis Cohort: diagnosed between January 2011 and December 2025, with complete medical records and follow-up data (including mortality status); 4. For the Prospective Intestinal Tuberculosis Cohort: newly diagnosed, able to cooperate with regular follow-up, and sign the informed consent form (if applicable); 5. No severe cognitive impairment or mental illness that affects the collection of clinical data and follow-up. Exclusion Criteria: 1. Patients with incomplete diagnosis of intestinal tuberculosis (no clear clinical, laboratory, imaging or pathological evidence to confirm the diagnosis); 2. Patients with concurrent severe extrapulmonary tuberculosis (such as tuberculous meningitis, miliary tuberculosis) that may independently affect mortality outcomes; 3. For the Retrospective Intestinal Tuberculosis Cohort: patients with incomplete medical records or missing key follow-up data (especially mortality status and related risk factor information); 4. For the Prospective Intestinal Tuberculosis Cohort: patients who refuse to sign the informed consent form (if applicable), cannot cooperate with regular follow-up, or are lost to follow-up during the study period; 5. Patients with severe comorbidities that may lead to rapid death (such as advanced malignant tumors, severe heart failure, end-stage liver/kidney disease) within the study period, which may interfere with the analysis of mortality risk factors related to intestinal tuberculosis; 6. Patients with cognitive impairment, mental illness or other conditions that cannot provide effective clinical information or cooperate with the study.