{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T11:40:51Z","timestamp":1792582851129,"version":"4.5.0"},"reference-count":30,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:00:00Z","timestamp":1792540800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:00:00Z","timestamp":1792540800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100004359","name":"Vetenskapsr\u00e5det","doi-asserted-by":"publisher","award":["2018\u201305820"],"award-info":[{"award-number":["2018\u201305820"]}],"id":[{"id":"10.13039\/501100004359","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J Methods Psych Res"],"published-print":{"date-parts":[[2026,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Nonsuicidal self\u2010injury (NSSI) is a widespread phenomenon among adolescents. Accurate estimates of prevalence rates when screening for NSSI are essential both in research and clinical settings. However, high variability raises the question of the reliability of self\u2010reported NSSI prevalence.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      The reliability of a dichotomous survey item on history of NSSI was investigated longitudinally using data from five time points across 16\u00a0months in a community sample (\n                      <jats:italic>N<\/jats:italic>\n                      \u00a0=\u00a0253) of Swedish adolescents (age\n                      <jats:italic>M<\/jats:italic>\n                      \u00a0=\u00a014.21\u00a0years, SD\u00a0=\u00a00.56, 58.5% female).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>About one in five participants (18.97%) changed their answer compared to their initial response. Of those who answered negatively on lifetime prevalence of NSSI at baseline, 8.95% later acknowledged NSSI, while 57.69% of those initially acknowledging NSSI later answered negatively. Fleiss' kappa across all five measurements indicated moderate agreement. Cohen's kappa between baseline and 12\u00a0months indicated moderate agreement.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>In this adolescent sample, the reliability of a single\u2010item question on NSSI history was moderate. More than half of those who initially acknowledged a history of NSSI answered negatively at a later time point. Interpretation of self\u2010reported lifetime prevalence rates of NSSI in adolescents using dichotomous survey items needs to be made cautiously.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/mpr.70115","type":"journal-article","created":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T10:57:14Z","timestamp":1792580234000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Lifetime Prevalence of Nonsuicidal Self\u2010Injury in Adolescents: Reliability of a Dichotomous Survey Item"],"prefix":"10.1002","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8365-3936","authenticated-orcid":false,"given":"Erik","family":"Aspeqvist","sequence":"first","affiliation":[{"name":"Department of Biomedical and Clinical Sciences Center for Social and Affective Neuroscience Link\u00f6ping University  Link\u00f6ping Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-6416-5335","authenticated-orcid":false,"given":"Hedvig","family":"Andersson","sequence":"additional","affiliation":[{"name":"Department of Biomedical and Clinical Sciences Center for Social and Affective Neuroscience Link\u00f6ping University  Link\u00f6ping Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3955-0443","authenticated-orcid":false,"given":"\u00d6rjan","family":"Dahlstr\u00f6m","sequence":"additional","affiliation":[{"name":"Department of Behavioral Sciences and Learning Link\u00f6ping University  Link\u00f6ping Sweden"},{"name":"Athletics Research Center Link\u00f6ping University  Link\u00f6ping Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1837-5930","authenticated-orcid":false,"given":"Laura","family":"Korhonen","sequence":"additional","affiliation":[{"name":"Department of Biomedical and Clinical Sciences Center for Social and Affective Neuroscience Link\u00f6ping University  Link\u00f6ping Sweden"},{"name":"Clinical Department of Child and Adolescent Psychiatry in Link\u00f6ping Region \u00d6sterg\u00f6tland  Link\u00f6ping Sweden"},{"name":"Department of Biomedical and Clinical Sciences Barnafrid Swedish National Center on Violence Against Children Link\u00f6ping University  Link\u00f6ping Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2465-8029","authenticated-orcid":false,"given":"Maria","family":"Zetterqvist","sequence":"additional","affiliation":[{"name":"Department of Biomedical and Clinical Sciences Center for Social and Affective Neuroscience 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