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Unsound sleep, wound-up mind: a longitudinal examination of acute suicidal affective disturbance features among an eating disorder sample

Published online by Cambridge University Press:  05 August 2021

Shruti S. Kinkel-Ram Open the ORCID record for Shruti S. Kinkel-Ram [Opens in a new window] ,
William Grunewald ,
Lindsay P. Bodell Open the ORCID record for Lindsay P. Bodell [Opens in a new window]  and
April R. Smith
Shruti S. Kinkel-Ram
Affiliation:
Department of Psychology, Miami University, Oxford, Ohio, USA
William Grunewald
Affiliation:
Department of Psychology, Auburn University, Auburn, Alabama, USA
Lindsay P. Bodell
Affiliation:
Department of Psychology, Western University, London, Ontario, Canada
April R. Smith*
Affiliation:
Department of Psychology, Auburn University, Auburn, Alabama, USA
*
Author for correspondence: April R. Smith, E-mail: ars0152@auburn.edu
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Abstract

Background

Suicide is one of the most commonly reported causes of death in individuals with eating disorders. However, the mechanisms underlying the suicide and disordered eating link are largely unknown, and current assessments are still unable to accurately predict future suicidal thoughts and behaviors. The purpose of this study is to test the utility of two promising proximal risk factors, sleep quality and agitation, in predicting suicidal ideation in a sample of individuals with elevated suicidal thoughts and behaviors, namely those with eating disorders.

Methods

Women (N = 97) receiving treatment at an eating disorder treatment center completed weekly questionnaires assessing suicidal ideation, agitation, and sleep. General linear mixed models examined whether agitation and/or sleep quality were concurrently or prospectively associated with suicidal ideation across 12 weeks of treatment.

Results

There was a significant interaction between within-person agitation and sleep quality on suicidal ideation [B(s.e.) = −0.02(0.01), p < 0.05], such that on weeks when an individual experienced both higher than their average agitation and lower than their average sleep quality, they also experienced their highest levels of suicidal ideation. However, neither agitation nor sleep quality prospectively predicted suicidal ideation.

Conclusions

This study was the first to examine dynamic associations between interpersonal constructs and suicidal ideation in individuals with eating disorders. Results suggest that ongoing assessment for overarousal symptoms, such as agitation and poor sleep quality, in individuals with eating disorders may be warranted in order to manage suicidal ideation among this vulnerable population.

Keywords

Agitationeating disorderslongitudinalsleepsuicidal ideation
Type
Original Article
Information
Psychological Medicine , Volume 53 , Issue 4 , March 2023 , pp. 1518 - 1526
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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References

Asaad Abdou, T., Esawy, H. I., Abdel Razek Mohamed, G., Hussein Ahmed, H., Elhabiby, M. M., Khalil, S. A., & El-Hawary, Y. A. (2018). Sleep profile in anorexia and bulimia nervosa female patients. Sleep Medicine, 48, 113–116. Available at https://doi-org.proxy.lib.miamioh.edu/10.1016/j.sleep.2018.03.032.CrossRefGoogle ScholarPubMed
Balázs, J., Benazzi, F., Rihmer, Z., Rihmer, A., Akiskal, K. K., & Akiskal, H. S. (2006). The close link between suicide attempts and mixed (bipolar) depression: Implications for suicide prevention. Journal of Affective Disorders, 91, 133–138. doi: 10.1016/j.jad.2005.12.049CrossRefGoogle ScholarPubMed
Barak-Corren, Y., Castro, V. M., Nock, M. K., Mandl, K. D., Madsen, E. M., Seiger, A., … Smoller, J. W. (2020). Validation of an electronic health record-based suicide risk prediction modeling approach across multiple health care systems. JAMA Network Open, 3, e201262. doi: 10.1001/jamanetworkopen.2020.1262CrossRefGoogle ScholarPubMed
Belak, L., Gianini, L., Klein, D. A., Sazonov, E., Keegan, K., Neustadt, E., … Attia, E. (2017). Measurement of fidgeting in patients with anorexia nervosa using a novel shoe-based monitor. Eating Behaviors, 24, 45–48. Available at https://doi-org.proxy.lib.miamioh.edu/10.1016/j.eatbeh.2016.11.005.CrossRefGoogle ScholarPubMed
Bernert, R. A., & Joiner, T. E. (2007). Sleep disturbances and suicide risk: A review of the literature. Neuropsychiatric Disease and Treatment, 3, 735. doi: 10.2147/ndt.s1248CrossRefGoogle Scholar
Bernert, R. A., Turvey, C. L., Conwell, Y., & Joiner, T. E. (2014). Association of poor subjective sleep quality with risk for death by suicide during a 10-year period: A longitudinal, population-based study of late life. JAMA Psychiatry, 71, 1129–1137. doi: 10.1001/jamapsychiatry.2014.1126CrossRefGoogle ScholarPubMed
Bodell, L., Smith, A., & Witte, T. (2020). Dynamic associations between interpersonal needs and suicidal ideation in a sample of individuals with eating disorders. Psychological Medicine, 51, 1–8. doi: 10.1017/S0033291720000276Google Scholar
Bryan, C. J., Hitschfeld, M. J., Palmer, B. A., Schak, K. M., Roberge, E. M., & Lineberry, T. W. (2014). Gender differences in the association of agitation and suicide attempts among psychiatric inpatients. General Hospital Psychiatry, 36, 726–731. doi: 10.1016/j.genhosppsych.2014.09.013CrossRefGoogle ScholarPubMed
Buckner, J. D., Lewis, E. M., & Tucker, R. P. (2019). Mental health problems and suicide risk: The impact of acute suicidal affective disturbance. Archives of Suicide Research, 24, 303–313. doi: 10.1080/13811118.2019.1574688CrossRefGoogle ScholarPubMed
Busch, K. A., Fawcett, J., & Jacobs, D. G. (2003). Clinical correlates of inpatient suicide. The Journal of Clinical Psychiatry, 64, 14–19. doi: 10.4088/JCP.v64n0105CrossRefGoogle ScholarPubMed
Carpenter, J. S., & Andrykowski, M. A. (1998). Psychometric evaluation of the Pittsburgh sleep quality index. Journal of Psychosomatic Research, 45(1), 5–13. doi: 10.1016/S0022-3999(97)00298-5CrossRefGoogle ScholarPubMed
Carretero, P., Campaña-Montes, J. J., & Artés-Rodríguez, A. (2020) Ecological momentary assessment for monitoring risk of suicide behavior. In Baca-Garcia, E., Behavioral Neurobiology of Suicide and Self Harm (pp. 229–245). Berlin, Heidelberg: Springer. doi:10.1007/7854_2020_170.CrossRefGoogle Scholar
Casper, R. C. (2006). The ‘drive for activity’ and ‘restlessness’ in anorexia nervosa: Potential pathways. Journal of Affective Disorders, 92, 99–107. Available at https://doi-org.proxy.lib.miamioh.edu/10.1016/j.jad.2005.12.039.CrossRefGoogle ScholarPubMed
Chapman, A., Gratz, K., & Tull, M. (2011). The dialectical behavior therapy skills workbook for anxiety: Breaking free from worry, panic, PTSD, and other anxiety symptoms. Oakland, CA: New Harbinger Publications.Google Scholar
Citrome, L. (2004). New treatments for agitation. Psychiatric Quarterly, 75, 197–213. doi: 10.1023/B:PSAQ.0000031791.53142.85CrossRefGoogle ScholarPubMed
Cooper, A. R., Loeb, K. L., & McGlinchey, E. L. (2020). Sleep and eating disorders: Current research and future directions. Current Opinion in Psychology, 34, 89–94. doi: 10.1016/j.copsyc.2019.11.005CrossRefGoogle ScholarPubMed
Cunningham, J. E., & Shapiro, C. M. (2018). Cognitive behavioural therapy for insomnia (CBT-I) to treat depression: A systematic review. Journal of Psychosomatic Research, 106, 1–12. doi: 10.1016/j.jpsychores.2017.12.012CrossRefGoogle ScholarPubMed
Davidson, C. L., Anestis, M. D., & Gutierrez, P. M. (2017). Ecological momentary assessment is a neglected methodology in suicidology. Archives of Suicide Research, 21, 1–11. doi: 10.1080/13811118.2015.1004482CrossRefGoogle ScholarPubMed
Denning, E. C. (2020). An investigation of the temporal relationship between agitation and sleep disturbances. (Paper No. 5585) [Master's thesis, Portland State University]. PDXScholar Dissertations and Theses.Google Scholar
Duffy, M. E., Lieberman, A., Siegfried, N., Henretty, J. R., Bass, G., Cox, S. A., … Joiner, T. E. (2020). Body trust, agitation, and suicidal ideation in a clinical eating disorder sample. International Journal of Eating Disorders, 53, 1746–1750. Available at https://doi-org.proxy.lib.miamioh.edu/10.1002/eat.23352.CrossRefGoogle Scholar
Duffy, M. E., Rogers, M. L., Gallyer, A. J., & Joiner, T. E. (2019). Body trust and agitation: Pathways to suicidal thoughts and behaviors. Archives of Suicide Research, 24, 1–15. doi: 10.1080/13811118.2019.1592039Google ScholarPubMed
Fairburn, C. G., & Beglin, S. J. (2008). Eating disorder examination questionnaire (EDE-Q 6.0). In Fairburn, C. G. (Ed.), Cognitive behavior therapy and eating disorders (pp. 265–308). New York: Guilford Press.Google ScholarPubMed
Fairburn, C. G., & Cooper, Z. (1993). The eating disorder examination. In Fairburn, C. G. & Wilson, G. T. (Eds.), Binge eating: Nature assessment and treatment. 12 (pp. 317–360). New York, NY: Guilford Press.Google Scholar
Forrest, L. N., Bodell, L. P., Witte, T. K., Goodwin, N., Bartlett, M. L., Siegfried, N., … Smith, A. R. (2016). Associations between eating disorder symptoms and suicidal ideation through thwarted belongingness and perceived burdensomeness among eating disorder patients. Journal of Affective Disorders, 195, 127–135. doi: 10.1016/j.jad.2016.02.017CrossRefGoogle ScholarPubMed
Franklin, J. C., Ribeiro, J. D., Fox, K. R., Bentley, K. H., Kleiman, E. M., Huang, X., … Nock, M. K. (2017). Risk factors for suicidal thoughts and behaviors: A meta-analysis of 50 years of research. Psychological Bulletin, 143, 187–232. doi: 10.1037/bul0000084CrossRefGoogle ScholarPubMed
Goldstein, T. R., Bridge, J. A., & Brent, D. A. (2008). Sleep disturbance preceding completed suicide in adolescents. Journal of Consulting and Clinical Psychology, 76, 84. doi: 10.1037/0022-006X.76.1.84CrossRefGoogle ScholarPubMed
Grilo, C. M., Masheb, R. M., & Wilson, G. T. (2001). A comparison of different methods for assessing the features of eating disorders in patients with binge eating disorder. Journal of Consult Clinical Psychology, 69, 317–322.CrossRefGoogle ScholarPubMed
Hoffiman, L. (2015). Longitudinal analysis: Modelling within-person fluctuation and change. New York, NY: Routledge.CrossRefGoogle Scholar
Holtkamp, K., Herpertz-Dahlmann, B., Hebebrand, K., Mika, C., Kratzsch, J., & Hebebrand, J. (2006). Physical activity and restlessness correlate with leptin levels in patients with adolescent anorexia nervosa. Biological Psychiatry, 60, 311–313. Available at https://doi-org.proxy.lib.miamioh.edu/10.1016/j.biopsych.2005.11.001.CrossRefGoogle ScholarPubMed
Jacobucci, R., Littlefield, A. K., Millner, A. J., Kleiman, E. M., & Steinley, D. (2021). Evidence of inflated prediction performance: A commentary on machine learning and suicide research. Clinical Psychological Science, 9, 129–134. doi: 10.1177/2167702620954216CrossRefGoogle Scholar
Joiner, T. E., Pfaff, J. J., & Acres, J. G. (2002). A brief screening tool for suicidal symptoms in adolescents and young adults in general health settings: Reliability and validity data from the Australian National General Practice Youth Suicide Prevention Project. Behaviour Research and Therapy, 40, 471–481. doi: 10.1016/S0005-7967(01)00017-1CrossRefGoogle Scholar
Joiner, T. E., Simpson, S., Rogers, M. L., Stanley, I. H., & Galynker, I. I. (2018). Whether called acute suicidal affective disturbance or suicide crisis syndrome, a suicide-specific diagnosis would enhance clinical care, increase patient safety, and mitigate clinician liability. Journal of Psychiatric Practice, 24, 274–278. doi: 10.1097/PRA.0000000000000315CrossRefGoogle ScholarPubMed
Kelly, W. E., & Yu, Q. (2018). Individuals with eating disorder symptoms have an increased risk of nightmares. Bagcilar Medical Bulletin, 3, 49–54. doi: 10.5350/BMB20180711071115CrossRefGoogle Scholar
Klonsky, E. D., Saffer, B. Y., & Bryan, C. J. (2018). Ideation-to-action theories of suicide: A conceptual and empirical update. Current Opinion in Psychology, 22, 38–43. doi: 10.1016/j.copsyc.2017.07.020CrossRefGoogle ScholarPubMed
Kostro, K., Lerman, J. B., & Attia, E.. (2014). The current status of suicide and self-injury in eating disorders: a narrative review. Journal of eating disorders, 2(1), 1–9. https://doi.org/10.1186/s40337-014-0019-xCrossRefGoogle ScholarPubMed
Krakow, B., Germain, A., Schrader, R., Hollifield, M., Koss, M., Warner, T. D., … Melendrez, D. (2001). The relationship between sleep quality and posttraumatic stress to potential sleep disorders in sexual assault survivors with chronic nightmares. Journal of Traumatic Stress, 14, 647–655. doi: 10.1023/A:1013029819358CrossRefGoogle Scholar
Krakow, B., Ribeiro, J. D., Ulibarri, V. A., Krakow, J., & Joiner, T. E. Jr (2011). Sleep disturbances and suicidal ideation in sleep medical center patients. Journal of Affective Disorders, 131, 422–427. 10.1016/j.jad.2010.12.001CrossRefGoogle ScholarPubMed
Lemyre, A., Bastien, C., & Vallières, A. (2019). Nightmares in mental disorders: A review. Dreaming, 29, 144–166. doi: 10.1037/drm0000103CrossRefGoogle Scholar
Linehan, M. M. (1993). Skills training manual for treating borderline personality disorder. New York: Guilford Press.Google Scholar
Linehan, M. M., Korslund, K. E., Harned, M. S., Gallop, R. J., Lungu, A., Neacsiu, A. D., … Murray-Gregory, A. M. (2015). Dialectical behavior therapy for high suicide risk in individuals with borderline personality disorder: A randomized clinical trial and component analysis. JAMA Psychiatry, 72, 475–482. doi: 10.1001/jamapsychiatry.2014.3039CrossRefGoogle ScholarPubMed
Littlefield, A. K., Cooke, J. T., Bagge, C. L., Glenn, C. R., Kleiman, E. M., Jacobucci, R., …Steinley, D. (2021). Machine learning to classify suicidal thoughts and behaviors: implementation within the common data elements used by the military suicide research consortium. Clinical psychological science, 9(3), 467–481. https://doi.org/10.1177/2167702620961067CrossRefGoogle Scholar
Littlewood, D. L., Kyle, S. D., Carter, L. A., Peters, S., Pratt, D., & Gooding, P. (2018). Short sleep duration and poor sleep quality predict next-day suicidal ideation: An ecological momentary assessment study. Psychological Medicine, 49, 403–411. doi: 10.1017/S0033291718001009CrossRefGoogle ScholarPubMed
Mayes, S. D., Fernandez-Mendoza, J., Baweja, R., Calhoun, S., Mahr, F., Aggarwal, R., & Arnold, M. (2014). Correlates of suicide ideation and attempts in children and adolescents with eating disorders. Eating Disorders, 22, 352–366. doi: 10.1080/10640266.2014.915694CrossRefGoogle ScholarPubMed
McCauley, E., Berk, M. S., Asarnow, J. R., Adrian, M., Cohen, J., Korslund, K., … Linehan, M. M. (2018). Efficacy of dialectical behavior therapy for adolescents at high risk for suicide: A randomized clinical trial. JAMA Psychiatry, 75, 777–785. doi: 10.1001/jamapsychiatry.2018.1109CrossRefGoogle ScholarPubMed
McHugh, C. M., & Large, M. M. (2020). Can machine-learning methods really help predict suicide? Current Opinion in Psychiatry, 33(4), 369–374. doi: 10.1097/YCO.0000000000000609CrossRefGoogle ScholarPubMed
Metalsky, G. I., & Joiner, T. E. (1997). The hopelessness depression symptom questionnaire. Cognitive Therapy and Research, 21(3), 359–384. https://doi.org/10.1023/A:1021882717784CrossRefGoogle Scholar
Mond, J. M., Hay, P. J., Rodgers, B., Owen, C., & Beumont, P. J. V. (2004). Validity of the eating disorder examination questionnaire (EDE-Q) in screening for eating disorders in community samples. Behaviour Research and Therapy, 42, 551–567. doi: 10.1016/S0005-7967(03)00161-XCrossRefGoogle ScholarPubMed
Nadorff, M., Nazem, S., & Fiske, A. (2013). Insomnia symptoms, nightmares, and suicide risk: Duration of sleep disturbance matters. Suicide and Life-Threatening Behavior, 43, 139–149. doi: 10.1111/sltb.12003CrossRefGoogle ScholarPubMed
Neacsiu, A. D., Eberle, J. W., Kramer, R., Wiesmann, T., & Linehan, M. M. (2014). Dialectical behavior therapy skills for transdiagnostic emotion dysregulation: A pilot randomized controlled trial. Behaviour Research and Therapy, 59, 40–51. doi: 10.1016/j.brat.2014.05.005CrossRefGoogle ScholarPubMed
Ong, J. C., Manber, R., Segal, Z., Xia, Y., Shapiro, S., & Wyatt, J. K. (2014). A randomized controlled trial of mindfulness meditation for chronic insomnia. Sleep, 37, 1553–1563. doi: 10.5665/sleep.4010CrossRefGoogle ScholarPubMed
Padez-Vieira, F., & Afonso, P. (2016). Sleep disturbances in anorexia nervosa. Advances in Eating Disorders, 4, 176–188. https://doi.org/10.1080/21662630.2016.1175958CrossRefGoogle Scholar
Panagioti, M., Gooding, P. A., Dunn, G., & Tarrier, N. (2011). Pathways to suicidal behavior in posttraumatic stress disorder. Journal of Traumatic Stress, 24(2), 137–145. doi: 10.1002/jts.20627CrossRefGoogle ScholarPubMed
Pigeon, W. R., Pinquart, M., & Conner, K. (2012). Meta-analysis of sleep disturbance and suicidal thoughts and behaviors. The Journal of Clinical Psychiatry, 73, 1160–1167. doi: 10.4088/JCP.11r07586CrossRefGoogle ScholarPubMed
Pisetsky, E. M., Crow, S. J., & Peterson, C. B. (2017). An empirical test of the interpersonal theory of suicide in a heterogeneous eating disorder sample. International Journal of Eating Disorders, 50, 162–165. doi: 10.1002/eat.22645CrossRefGoogle Scholar
Preti, A., Rocchi, M. B. L., Sisti, D., Camboni, M. V., & Miotto, P. (2011). A comprehensive meta-analysis of the risk of suicide in eating disorders. Acta Psychiatrica Scandinavica, 124, 6–17. doi: 10.1111/j.1600-0447.2010.01641.xCrossRefGoogle ScholarPubMed
Reas, D. L., Grilo, C. M., & Masheb, R. M. (2006). Reliability of the eating disorder examination-questionnaire in patients with binge eating disorder. Behaviour Research and Therapy, 44, 43–51. doi: 10.1016/j.brat.2005.01.004CrossRefGoogle ScholarPubMed
Ribeiro, J. D., Bender, T. W., Buchman, J. M., Nock, M. K., Rudd, M. D., Bryan, C. J., … Joiner, T. E. Jr (2015). An investigation of the interactive effects of the capability for suicide and acute agitation on suicidality in a military sample. Depression and Anxiety, 32, 25–31. doi:10.1002/da.22240CrossRefGoogle Scholar
Ribeiro, J. D., Bender, T. W., Selby, E. A., Hames, J. L., & Joiner, T. E. (2011). Development and validation of a brief self-report measure of agitation: The Brief Agitation Measure. Journal of Personality Assessment, 93, 597–604. doi: 10.1080/00223891.2011.608758CrossRefGoogle ScholarPubMed
Rogers, M. L., Chu, C., & Joiner, T. (2019). The necessity, validity, and clinical utility of a new diagnostic entity: Acute suicidal affective disturbance. Journal of Clinical Psychology, 75, 999–1010. doi: 10.1002/jclp.22743CrossRefGoogle ScholarPubMed
Rogers, M. L., Galynker, I., Yaseen, Z., DeFazio, K., & Joiner, T. E. (2017). An overview and comparison of two proposed suicide-specific diagnoses: Acute suicidal affective disturbance and suicide crisis syndrome. Psychiatric Annals, 47, 416–420. doi: 10.3928/00485713-20170630-01CrossRefGoogle Scholar
Rogers, M. L., & Joiner, T. E. (2018). Lifetime acute suicidal affective disturbance symptoms account for the link between suicide-specific rumination and lifetime past suicide attempts. Journal of Affective Disorders, 235, 428–433. doi: 10.1016/j.jad.2018.04.023CrossRefGoogle ScholarPubMed
Rogers, M. L., Ringer, F. B., & Joiner, T. E. (2016a). A meta-analytic review of the association between agitation and suicide attempts. Clinical Psychology Review, 48, 1–6. doi: 10.1016/j.cpr.2016.06.002CrossRefGoogle ScholarPubMed
Rogers, M. L., Tucker, R. P., Law, K. C., Michaels, M. S., Anestis, M. D., & Joiner, T. E. (2016b). Manifestations of overarousal account for the association between cognitive anxiety sensitivity and suicidal ideation. Journal of Affective Disorders, 192, 116–124. doi: 10.1016/j.jad.2015.12.014CrossRefGoogle ScholarPubMed
Sandman, N., Valli, K., Kronholm, E., Vartiainen, E., Laatikainen, T., & Paunio, T. (2017). Nightmares as predictors of suicide: An extension study including war veterans. Scientific Reports, 7, 44756. doi: 10.5664/jcsm.5592CrossRefGoogle ScholarPubMed
Scheurink, A. J. W., Boersma, G. J., Nergårdh, R., & Södersten, P. (2010). Neurobiology of hyperactivity and reward: Agreeable restlessness in anorexia nervosa. Physiology & Behavior, 100, 490–495. Available at https://doi-org.proxy.lib.miamioh.edu/10.1016/j.physbeh.2010.03.016.CrossRefGoogle ScholarPubMed
Siddaway, A. P., Quinlivan, L., Kapur, N., O'connor, R. C., & de Beurs, D. (2020). Cautions, concerns, and future directions for using machine learning in relation to mental health problems and clinical and forensic risks: A brief comment on "Model complexity improves the prediction of nonsuicidal self-injury” (Fox et al., 2019).. Journal of Consulting and Clinical Psychology, 88(4), 384–387. https://doi.org/10.1037/ccp0000485CrossRefGoogle Scholar
Sjöström, N., Waern, M., & Hetta, J. (2007). Nightmares and sleep disturbances in relation to suicidality in suicide attempters. Sleep, 30, 91–95. doi: 10.1093/sleep/30.1.91CrossRefGoogle ScholarPubMed
Smith, A. R., Dodd, D. R., Forrest, L. N., Witte, T. K., Bodell, L., Ribeiro, J. D., … Bartlett, M. (2016). Does the interpersonal–psychological theory of suicide provide a useful framework for understanding suicide risk among eating disorder patients? A test of the validity of the IPTS. International Journal of Eating Disorders, 49, 1082–1086. doi: 10.1002/eat.22588CrossRefGoogle ScholarPubMed
Smith, D. M., Wang, S. B., Carter, M. L., Fox, K. R., & Hooley, J. M. (2020). Longitudinal predictors of self-injurious thoughts and behaviors in sexual and gender minority adolescents. Journal of Abnormal Psychology, 129(1), 114–121. doi: 10.1037/abn0000483CrossRefGoogle ScholarPubMed
Smith, A. R., Zuromski, K. L., & Dodd, D. R. (2018). Eating disorders and suicidality: What we know, what we don't know, and suggestions for future research. Current Opinion in Psychology, 22, 63–67. doi: 10.1016/j.copsyc.2017.08.023CrossRefGoogle ScholarPubMed
Snyder, E., Cai, B., DeMuro, C., Morrison, M. F., & Ball, W. (2018). A new single-item sleep quality scale: Results of psychometric evaluation in patients with chronic primary insomnia and depression. Journal of Clinical Sleep Medicine, 14(11), 1849–1857. doi: 10.5664/jcsm.7478CrossRefGoogle ScholarPubMed
Tarrier, N., & Gregg, L. (2004). Suicide risk in civilian PTSD patients. Predictors of suicidal ideation, planning and attempts. Social Psychiatry and Psychiatric Epidemiology, 39, 655–661. doi: 10.1007/s00127-004-0799-4CrossRefGoogle ScholarPubMed
Taylor, D. J., & Pruiksma, K. E. (2014). Cognitive and behavioural therapy for insomnia (CBT-I) in psychiatric populations: A systematic review. International Review of Psychiatry, 26, 205–213. doi: tps://doi.org/10.3109/09540261.2014.902808CrossRefGoogle ScholarPubMed
Tucker, R. P., Michaels, M. S., Rogers, M. L., Wingate, L. R., & Joiner, T. E. Jr (2016). Construct validity of a proposed new diagnostic entity: Acute suicidal affective disturbance (ASAD). Journal of affective disorders, 189, 365–378. doi:10.1016/j.jad.2015.07.049CrossRefGoogle ScholarPubMed
van Mens, K., de Schepper, C. W. M., Wijnen, B., Koldijk, S. J., Schnack, H., de Looff, P., … De Beurs, D. (2020). Predicting future suicidal behaviour in young adults, with different machine learning techniques: A population-based longitudinal study. Journal of Affective Disorders, 271, 169–177. doi: 10.1016/j.jad.2020.03.081CrossRefGoogle ScholarPubMed
von Glischinski, M., Teismann, T., Prinz, S., Gebauer, J. E., & Hirschfeld, G. (2016). Depressive Symptom Inventory Suicidality Subscale: Optimal cut points for clinical and non-clinical samples. Clinical Psychology & Psychotherapy, 23, 543–549. doi: 10.1002/cpp.2007CrossRefGoogle ScholarPubMed
Walsh, C. G., Ribeiro, J. D., & Franklin, J. C. (2017). Predicting risk of suicide attempts over time through machine learning. Clinical Psychological Science, 5, 457–469. doi: 10.1177/2167702617691560CrossRefGoogle Scholar
Wang, L., & Maxwell, S. E. (2015). On disaggregating between-person and within-person effects with longitudinal data using multilevel models. Psychological Methods, 20, 63–83. doi: 10.1037/met0000030CrossRefGoogle ScholarPubMed
Witte, T. K., Zuromski, K. L., Gauthier, J. M., Smith, A. R., Bartlett, M., Siegfried, N., … Goodwin, N. (2016). Restrictive eating: Associated with suicide attempts, but not acquired capability in residential patients with eating disorders. Psychiatry Research, 235, 90–96. doi: 10.1016/j.psychres.2015.11.043CrossRefGoogle Scholar
Wong, M. M., Brower, K. J., & Zucker, R. A. (2011). Sleep problems, suicidal ideation, and self-harm behaviors in adolescence. Journal of Psychiatric Research, 45, 505–511. doi: 10.1016/j.jpsychires.2010.09.005CrossRefGoogle ScholarPubMed
Zayfert, C., & DeViva, J. C. (2004). Residual insomnia following cognitive behavioral therapy for PTSD. Journal of Traumatic Stress, 17(1), 69–73. doi: 10.1023/B:JOTS.0000014679.31799.e7CrossRefGoogle ScholarPubMed
Zeller, S. L., & Rhoades, R. W. (2010). Systematic reviews of assessment measures and pharmacologic treatments for agitation. Clinical Therapeutics, 32, 403–425. doi: 10.1016/j.clinthera.2010.03.006CrossRefGoogle ScholarPubMed