title: Response to Xue and Colleagues.
authors.affiliation: Department of Psychiatry, Institute for Clinical Evaluative Sciences, Queen's University, Kingston, Ontario, Canada.
authors.forename: Dallas P
authors.initials: DP
authors.lastname: Seitz
authors.affiliation: Department of Medicine, Institute for Clinical Evaluative Sciences, Queen's University, Kingston, Ontario, Canada.
authors.forename: Sudeep S
authors.initials: SS
authors.lastname: Gill
authors.affiliation: Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.|Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.|Department of Medicine, Mt. Sinai Hospital, Toronto, Ontario, Canada.
authors.forename: Chaim M
authors.initials: CM
authors.lastname: Bell
authors.affiliation: Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.|Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.
authors.forename: Peter C
authors.initials: PC
authors.lastname: Austin
authors.affiliation: Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.|Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.|Women's College Research Institute, Women's College Hospital, Toronto, Ontario, Canada.
authors.forename: Andrea
authors.initials: A
authors.lastname: Gruneir
authors.affiliation: Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.|Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.
authors.forename: Geoffrey M
authors.initials: GM
authors.lastname: Anderson
authors.affiliation: Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.|Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.|Women's College Research Institute, Women's College Hospital, Toronto, Ontario, Canada.
authors.forename: Paula A
authors.initials: PA
authors.lastname: Rochon
mesh_terms: D000544:Alzheimer Disease / Q000150:complications*; D000765:Anesthesia, Conduction / Q000009:adverse effects*; D000768:Anesthesia, General / Q000009:adverse effects*; D005260:Female; D006620:Hip Fractures / Q000601:surgery*; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000209:etiology*