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Factor analyses of the Suicidal Intent Scale (SIS) and the Risk-Rescue Rating Scale (RRRS): toward the identification of homogeneous subgroups of suicidal behaviors.
J Affect Disord. 2010 Feb; 121(1-2):80-7.JA

Abstract

BACKGROUND

Suicidal behavior is a heterogeneous entity, determined by multiple factors. This heterogeneity has major implications for clinical management of patients and identification of risk factors. Our study aims at identifying homogeneous subgroups of patients with suicidal behavior.

METHODS

We used two validated questionnaires to assess the intent (Suicidal Intent Scale, SIS) and lethality (Risk-Rescue Rating Scale, RRRS) of the most severe suicide attempt in a sample of 608 patients recruited consecutively. We first explored the factorial structure of the two scales, using a principal component analysis, and then tested the relationship between sub-scores identified and subtypes of suicide attempts (violent, serious overdose) using a backward logistic regression.

RESULTS

A four-factor structure was retained for the SIS (conception, preparation, precautions and communication). The RRRS, for which a factorial structure has not been previously published, had a three-factor structure (medical damage, implementation and rescue conditions). This structure was valid, stable and clinically relevant. Serious suicide attempts were characterized by less communication and more precautions against discovery, whereas violent attempts were associated with higher risk acts. Neither violent nor serious attempts were characterized by more planning.

LIMITATIONS

The SIS and RRRS were assessed retrospectively, and so could have been influenced by recall bias. Finally, censoring bias may have affected our results.

CONCLUSIONS

The characterization of suicidal behaviors using SIS and RRRS sub-scores constitutes a first step toward the identification of homogeneous subgroups of suicide attempters. Prospective studies are needed to test the predictive value of these sub-scores for subsequent suicidal acts.

Authors+Show Affiliations

INSERM, Unit 955, IMRB, Psychiatry Genetics Team, Créteil, France. helene.misson@inserm.frNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Multicenter Study
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19524302

Citation

Misson, Hélène, et al. "Factor Analyses of the Suicidal Intent Scale (SIS) and the Risk-Rescue Rating Scale (RRRS): Toward the Identification of Homogeneous Subgroups of Suicidal Behaviors." Journal of Affective Disorders, vol. 121, no. 1-2, 2010, pp. 80-7.
Misson H, Mathieu F, Jollant F, et al. Factor analyses of the Suicidal Intent Scale (SIS) and the Risk-Rescue Rating Scale (RRRS): toward the identification of homogeneous subgroups of suicidal behaviors. J Affect Disord. 2010;121(1-2):80-7.
Misson, H., Mathieu, F., Jollant, F., Yon, L., Guillaume, S., Parmentier, C., Raust, A., Jaussent, I., Slama, F., Leboyer, M., Bellivier, F., & Courtet, P. (2010). Factor analyses of the Suicidal Intent Scale (SIS) and the Risk-Rescue Rating Scale (RRRS): toward the identification of homogeneous subgroups of suicidal behaviors. Journal of Affective Disorders, 121(1-2), 80-7. https://doi.org/10.1016/j.jad.2009.05.012
Misson H, et al. Factor Analyses of the Suicidal Intent Scale (SIS) and the Risk-Rescue Rating Scale (RRRS): Toward the Identification of Homogeneous Subgroups of Suicidal Behaviors. J Affect Disord. 2010;121(1-2):80-7. PubMed PMID: 19524302.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Factor analyses of the Suicidal Intent Scale (SIS) and the Risk-Rescue Rating Scale (RRRS): toward the identification of homogeneous subgroups of suicidal behaviors. AU - Misson,Hélène, AU - Mathieu,Flavie, AU - Jollant,Fabrice, AU - Yon,Liova, AU - Guillaume,Sébastien, AU - Parmentier,Claire, AU - Raust,Aurélie, AU - Jaussent,Isabelle, AU - Slama,Frédéric, AU - Leboyer,Marion, AU - Bellivier,Frank, AU - Courtet,Philippe, Y1 - 2009/06/12/ PY - 2009/02/03/received PY - 2009/05/17/revised PY - 2009/05/18/accepted PY - 2009/6/16/entrez PY - 2009/6/16/pubmed PY - 2010/4/15/medline SP - 80 EP - 7 JF - Journal of affective disorders JO - J Affect Disord VL - 121 IS - 1-2 N2 - BACKGROUND: Suicidal behavior is a heterogeneous entity, determined by multiple factors. This heterogeneity has major implications for clinical management of patients and identification of risk factors. Our study aims at identifying homogeneous subgroups of patients with suicidal behavior. METHODS: We used two validated questionnaires to assess the intent (Suicidal Intent Scale, SIS) and lethality (Risk-Rescue Rating Scale, RRRS) of the most severe suicide attempt in a sample of 608 patients recruited consecutively. We first explored the factorial structure of the two scales, using a principal component analysis, and then tested the relationship between sub-scores identified and subtypes of suicide attempts (violent, serious overdose) using a backward logistic regression. RESULTS: A four-factor structure was retained for the SIS (conception, preparation, precautions and communication). The RRRS, for which a factorial structure has not been previously published, had a three-factor structure (medical damage, implementation and rescue conditions). This structure was valid, stable and clinically relevant. Serious suicide attempts were characterized by less communication and more precautions against discovery, whereas violent attempts were associated with higher risk acts. Neither violent nor serious attempts were characterized by more planning. LIMITATIONS: The SIS and RRRS were assessed retrospectively, and so could have been influenced by recall bias. Finally, censoring bias may have affected our results. CONCLUSIONS: The characterization of suicidal behaviors using SIS and RRRS sub-scores constitutes a first step toward the identification of homogeneous subgroups of suicide attempters. Prospective studies are needed to test the predictive value of these sub-scores for subsequent suicidal acts. SN - 1573-2517 UR - https://www.unboundmedicine.com/medline/citation/19524302/Factor_analyses_of_the_Suicidal_Intent_Scale__SIS__and_the_Risk_Rescue_Rating_Scale__RRRS_:_toward_the_identification_of_homogeneous_subgroups_of_suicidal_behaviors_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0165-0327(09)00221-3 DB - PRIME DP - Unbound Medicine ER -