title: Risk of surgery in patients over 90.
mesh_terms: D000367:Age Factors; D000368:Aged; D002493:Central Nervous System Diseases / Q000150:complications / Q000401:mortality; D003681:Dehydration / Q000150:complications / Q000401:mortality; D050723:Fractures, Bone / Q000401:mortality / Q000601:surgery; D005767:Gastrointestinal Diseases / Q000150:complications / Q000401:mortality; D006331:Heart Diseases / Q000150:complications / Q000401:mortality; D006615:Hip / Q000601:surgery; D006801:Humans; D007415:Intestinal Obstruction / Q000401:mortality / Q000601:surgery; D007674:Kidney Diseases / Q000150:complications / Q000401:mortality; D008171:Lung Diseases / Q000150:complications / Q000401:mortality; D008297:Male; D008875:Middle Aged; D009748:Nutrition Disorders / Q000150:complications / Q000401:mortality; D011183:Postoperative Complications / Q000401:mortality*; D012189:Retrospective Studies; D013514:Surgical Procedures, Operative; D013997:Time Factors; D014521:Urethra / Q000601:surgery; D014570:Urologic Diseases / Q000401:mortality / Q000601:surgery