Development and Validation of a Risk Prediction Model for Preoperative Frailty in Elderly Patients With Colorectal Cancer

Inclusion Criteria:

1. patients who met the diagnostic criteria of colorectal cancer in Chinese Guidelines for Diagnosis and Treatment of Colorectal Cancer 2020 Edition and underwent surgery;
2. patients aged ≥60 years old ;
3. patients who are clearly conscious, able to understand instructions, communicate normally, and complete the physical activity ability test without the assistance of others;
4. patients who gave informed consent and volunteered to participate in the study.

Exclusion Criteria:

1. patients with limb joint disease and lower limb pain;
2. patients with serious heart, liver, kidney diseases could not complete the test;
3. patients with visual impairment and hearing impairment;
4. patients with a history of mental illness or drug dependence;
5. taking antidepressants, levodopa/carbidopa, donepezil hydrochloride and other drugs ;
6. patients who received preoperative radiotherapy and chemotherapy;
7. Patients with hypothyroidism, Parkinson's disease, stroke and other diseases.