Duration of hospitalization prior to surgery.
D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D004630:Emergencies; D005260:Female; D006760:Hospitalization; D006784:Hospitals, Teaching; D006801:Humans; D007902:Length of Stay; D008297:Male; D008505:Medical Staff, Hospital; D006278:Medicare; D011300:Preoperative Care; D011331:Private Practice; D012189:Retrospective Studies; D013223:Statistics as Topic; D013514:Surgical Procedures, Operative