The study primarily focuses on adult patients who underwent elective surgery at Peking Union Medical College Hospital. The physical activity level before surgery within the past 3 months is the main exposure factor and postoperative quality of life score (EQ-5D-3L utility index) is the main outcome indicator. The correlation between patients' preoperative physical activity level and their surgical outcomes will be explored in this study.

Inclusion Criteria:

• Adult patients undergoing elective surgery at Peking Union Medical College Hospital

Exclusion Criteria:

• 1. Patients scheduled for surgery with minimal impact on overall health (including eye surgery, abortion, hysteroscopy, conization, gastroscopy, vascular angiography, and superficial surgery, etc.) 2. Orthopedic and cardiac surgery patients 3. Patients who are unable to live independently or have significant limitations in physical activity prior to surgery 4. Patients who have difficulty communicating verbally and cannot complete the questionnaire 5. Pregnant women.

Adult patients undergoing elective surgery at Peking Union Medical College Hospital.