{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T17:09:51Z","timestamp":1792084191650,"version":"4.4.0"},"reference-count":35,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2015,3,24]],"date-time":"2015-03-24T00:00:00Z","timestamp":1427155200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Physicians' Services Incorporated (PSI) Foundation","award":["R11-36"],"award-info":[{"award-number":["R11-36"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int J Geriat Psychiatry"],"published-print":{"date-parts":[[2016,1]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>The older population are at a high risk for suicide. This study sought to learn more about the characteristics of suicide in the oldest\u2010old and to use a cluster analysis to determine if oldest\u2010old suicide victims assort into clinically meaningful subgroups.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Data were collected from a coroner's chart review of suicide victims in Toronto from 1998 to 2011. We compared two age groups (65\u201379\u2009year olds,\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009335, and 80+\u2009year olds,\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009191) and then conducted a hierarchical agglomerative cluster analysis using Ward's method to identify distinct clusters in the 80+ group.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The younger and older age groups differed according to marital status, living circumstances and pattern of stressors. The cluster analysis identified three distinct clusters in the 80+ group. Cluster 1 was the largest (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009124) and included people who were either married or widowed who had significantly more depression and somewhat more medical health stressors. In contrast, cluster 2 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200950) comprised people who were almost all single and living alone with significantly less identified depression and slightly fewer medical health stressors. All members of cluster 3 (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200917) lived in a retirement residence or nursing home, and this group had the highest rates of depression, dementia, other mental illness and past suicide attempts.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This is the first study to use the cluster analysis technique to identify meaningful subgroups among suicide victims in the oldest\u2010old. The results reveal different patterns of suicide in the older population that may be relevant for clinical care. Copyright \u00a9 2015 John Wiley &amp; Sons, Ltd.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/gps.4286","type":"journal-article","created":{"date-parts":[[2015,3,24]],"date-time":"2015-03-24T18:26:21Z","timestamp":1427221581000},"page":"33-40","source":"Crossref","is-referenced-by-count":54,"title":["Suicide in the oldest old: an observational study and cluster analysis"],"prefix":"10.1002","volume":"31","author":[{"given":"Mark","family":"Sinyor","sequence":"first","affiliation":[{"name":"Department of Psychiatry, Sunnybrook Health Sciences Centre University of Toronto  Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lynnette Pei Lin","family":"Tan","sequence":"additional","affiliation":[{"name":"Department of Psychological Medicine Tan Tock Seng Hospital  Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayal","family":"Schaffer","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, Sunnybrook Health Sciences Centre University of Toronto  Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Damien","family":"Gallagher","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, Sunnybrook Health Sciences Centre University of Toronto  Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenneth","family":"Shulman","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, Sunnybrook Health Sciences Centre University of Toronto  Toronto Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,3,24]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ajp.2009.08121779"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.bp.112.110130"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1159\/000064931"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0959259809990347"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1192\/apt.6.2.102"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1521\/suli.2007.37.5.576"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1177\/070674379203700801"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0006-3223(02)01347-1"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1177\/002580249503500409"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.comppsych.2013.05.007"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.181.3.226"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1093\/geronb\/58.5.S314"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1093\/ageing\/afh128"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmjopen-2012-002260"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijerph9030722"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1532-5415.2003.51506.x"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1093\/geronb\/56.2.P111"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1001\/archinte.164.11.1179"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1001\/archgenpsychiatry.2011.85"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1159\/000272018"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-5415.2008.01990.x"},{"key":"e_1_2_10_23_1","first-page":"28","article-title":"Challenges associated with managing suicide risk in long\u2010term care facilities","volume":"21","author":"O'Riley ANM","year":"2013","journal-title":"Annals of Long\u2010Term Care: Clinical Care and Aging"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1943-278X.1992.tb00478.x"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1159\/000109998"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.bp.108.050500"},{"key":"e_1_2_10_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/0165-0327(95)00055-0"},{"key":"e_1_2_10_28_1","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1099-1166(199704)12:4<481::AID-GPS514>3.0.CO;2-F"},{"key":"e_1_2_10_29_1","doi-asserted-by":"publisher","DOI":"10.1177\/1557988308316555"},{"key":"e_1_2_10_30_1","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1177\/070674371405900106","article-title":"Characterizing suicide in Toronto: an observational study and cluster analysis","volume":"59","author":"Sinyor M","year":"2014","journal-title":"Canadian journal of psychiatry Revue canadienne de psychiatrie"},{"key":"e_1_2_10_31_1","unstructured":"Statistics Canada Population projections for Canada.Provinces and Territories 2009 to 2036. Government of Canada.2010.http:\/\/www.statcan.gc.ca\/pub\/91\u2010520\u2010x\/91\u2010520\u2010x2010001\u2010eng.pdf [accessed February 19 2015]."},{"key":"e_1_2_10_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0165-0327(02)00310-5"},{"key":"e_1_2_10_33_1","doi-asserted-by":"publisher","DOI":"10.1001\/jama.288.22.2836"},{"key":"e_1_2_10_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cct.2013.03.003"},{"key":"e_1_2_10_35_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.324.7350.1355"},{"key":"e_1_2_10_36_1","doi-asserted-by":"publisher","DOI":"10.1080\/01621459.1963.10500845"}],"container-title":["International Journal of Geriatric Psychiatry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fgps.4286","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/gps.4286","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,4]],"date-time":"2023-10-04T00:08:06Z","timestamp":1696378086000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/gps.4286"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,3,24]]},"references-count":35,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2016,1]]}},"alternative-id":["10.1002\/gps.4286"],"URL":"https:\/\/doi.org\/10.1002\/gps.4286","archive":["Portico"],"relation":{},"ISSN":["0885-6230","1099-1166"],"issn-type":[{"value":"0885-6230","type":"print"},{"value":"1099-1166","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,3,24]]}}}