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Differentiating Single and Multiple Suicide Attempters: What Nightmares Can Tell Us That Other Predictors Cannot.
J Clin Sleep Med. 2018 05 15; 14(5):829-834.JC

Abstract

STUDY OBJECTIVES

Although nightmares have been associated with suicidal behavior beyond well-known risk factors, the association between nightmares and multiple suicide attempts remains largely unexplored. This study addressed this gap in the literature by examining whether nightmares differentiated between individuals who reported single versus multiple suicide attempts. The individual contributions of nightmare frequency, distress/severity, and chronicity were also investigated to determine which variable contributed the most variance.

METHODS

Participants (n = 225) were recruited as part of a larger data collection through Amazon Mechanical Turk, an online crowdsourcing venue. Participants reported attempting suicide once (n = 107 individuals), multiple times (n = 118), or never (n = 791). Nightmare frequency, distress, and chronicity were assessed with the Disturbing Dreams and Nightmares Severity Index.

RESULTS

Nightmare frequency differentiated multiple from single suicide attempters, even after controlling for symptoms of depression, posttraumatic stress disorder, insomnia, nightmare severity/distress, nightmare chronicity, and age (P = .019). Comparison participants, those not reporting suicide attempts, reported a significantly lower level of nightmare frequency than those reporting single or multiple suicide attempts.

CONCLUSIONS

Inconsistent with past research, this study showed that nightmare frequency, and not nightmare chronicity or severity/distress, differentiated between single and multiple suicide attempters. This outcome suggests that the number of nightmares experienced may be more pertinent in predicting repeat suicide attempts than their duration or perceived severity. Study limitations include a cross-sectional design, a convenience sampling approach, a lack of control for previous treatment or length of time since last attempt, and a retrospective nightmare measure.

Authors+Show Affiliations

Mississippi State University, Starkville, Mississippi.Mississippi State University, Starkville, Mississippi. Valparaiso University, Valparaiso, Indiana.Mississippi State University, Starkville, Mississippi. Baylor College of Medicine, Houston, Texas.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29734974

Citation

Speed, Katrina J., et al. "Differentiating Single and Multiple Suicide Attempters: what Nightmares Can Tell Us That Other Predictors Cannot." Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine, vol. 14, no. 5, 2018, pp. 829-834.
Speed KJ, Drapeau CW, Nadorff MR. Differentiating Single and Multiple Suicide Attempters: What Nightmares Can Tell Us That Other Predictors Cannot. J Clin Sleep Med. 2018;14(5):829-834.
Speed, K. J., Drapeau, C. W., & Nadorff, M. R. (2018). Differentiating Single and Multiple Suicide Attempters: What Nightmares Can Tell Us That Other Predictors Cannot. Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine, 14(5), 829-834. https://doi.org/10.5664/jcsm.7116
Speed KJ, Drapeau CW, Nadorff MR. Differentiating Single and Multiple Suicide Attempters: what Nightmares Can Tell Us That Other Predictors Cannot. J Clin Sleep Med. 2018 05 15;14(5):829-834. PubMed PMID: 29734974.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Differentiating Single and Multiple Suicide Attempters: What Nightmares Can Tell Us That Other Predictors Cannot. AU - Speed,Katrina J, AU - Drapeau,Christopher W, AU - Nadorff,Michael R, Y1 - 2018/05/15/ PY - 2017/08/05/received PY - 2018/02/09/accepted PY - 2018/5/8/pubmed PY - 2019/11/19/medline PY - 2018/5/9/entrez KW - PTSD KW - depression KW - insomnia KW - multiple suicide attempters KW - nightmare chronicity KW - nightmare frequency KW - nightmare severity KW - nightmares KW - psychopathology KW - sleep and psychiatric conditions SP - 829 EP - 834 JF - Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine JO - J Clin Sleep Med VL - 14 IS - 5 N2 - STUDY OBJECTIVES: Although nightmares have been associated with suicidal behavior beyond well-known risk factors, the association between nightmares and multiple suicide attempts remains largely unexplored. This study addressed this gap in the literature by examining whether nightmares differentiated between individuals who reported single versus multiple suicide attempts. The individual contributions of nightmare frequency, distress/severity, and chronicity were also investigated to determine which variable contributed the most variance. METHODS: Participants (n = 225) were recruited as part of a larger data collection through Amazon Mechanical Turk, an online crowdsourcing venue. Participants reported attempting suicide once (n = 107 individuals), multiple times (n = 118), or never (n = 791). Nightmare frequency, distress, and chronicity were assessed with the Disturbing Dreams and Nightmares Severity Index. RESULTS: Nightmare frequency differentiated multiple from single suicide attempters, even after controlling for symptoms of depression, posttraumatic stress disorder, insomnia, nightmare severity/distress, nightmare chronicity, and age (P = .019). Comparison participants, those not reporting suicide attempts, reported a significantly lower level of nightmare frequency than those reporting single or multiple suicide attempts. CONCLUSIONS: Inconsistent with past research, this study showed that nightmare frequency, and not nightmare chronicity or severity/distress, differentiated between single and multiple suicide attempters. This outcome suggests that the number of nightmares experienced may be more pertinent in predicting repeat suicide attempts than their duration or perceived severity. Study limitations include a cross-sectional design, a convenience sampling approach, a lack of control for previous treatment or length of time since last attempt, and a retrospective nightmare measure. SN - 1550-9397 UR - https://www.unboundmedicine.com/medline/citation/29734974/Differentiating_Single_and_Multiple_Suicide_Attempters:_What_Nightmares_Can_Tell_Us_That_Other_Predictors_Cannot_ L2 - https://doi.org/10.5664/jcsm.7116 DB - PRIME DP - Unbound Medicine ER -