Protocol - Intensity of Suicidal Ideation (Continuum) - Adult
- Classification of Suicidal Ideation and Suicidal Behavior - Adolescent - Current
- Classification of Suicidal Ideation and Suicidal Behavior - Adolescent - Epidemiology
- Classification of Suicidal Ideation and Suicidal Behavior - Adolescent - Lifetime
- Classification of Suicidal Ideation and Suicidal Behavior - Adolescent - Since Last Visit
- Classification of Suicidal Ideation and Suicidal Behavior - Adult - Current
- Classification of Suicidal Ideation and Suicidal Behavior - Adult - Epidemiology
- Classification of Suicidal Ideation and Suicidal Behavior - Adult - Lifetime
- Classification of Suicidal Ideation and Suicidal Behavior - Adult - Since Last Visit
- Lethality of Suicide Attempts
- Non-suicidal Self Injury
- Suicidal Intent of Suicide Attempts
Description
The Scale for Suicide Ideation (SSI) is a 21-item, interviewer-administered scale that measures the current intensity of patients’ specific attitudes, behaviors, and plans to commit suicide on the day of the interview and during the time period that they were most suicidal. The first 5 items are screeners (wish to live, wish to die, and desire to attempt suicide), followed by 14 items to assess suicidal risk factors. The last 2 items capture previous suicide attempts. The respondent is first asked all questions about their suicidal ideation on the day of the interview and then queried about the most severe point of suicidal ideation.
Each item is rated on a 3-point scale ranging from 0 to 2 according to suicidal intensity. The SSI is scored by adding up the ratings (0-2) from the first 19 items.
Specific Instructions
This protocol includes questions that can potentially identify respondents who are at risk of suicide. Investigators implementing this protocol should consider developing a risk management plan specific to their study to ensure the safety of participants. The following links provide additional information and guidelines for suicide-related research:
ora.research.ucla.edu/OHRPP/Documents/Policy/8/Risk_of_Suicide.pdf
Availability
Protocol
Day of Interview |
| Time of Crisis/Most Severe Point of Illness |
Today’s Date: ___ / ___ / ___ |
| Approximate Date at Most Severe Point: ___ / ___ / ___ |
I. Characteristics of Attitude Toward Living/Dying | ||
( ) | 1. Wish to Live 0 Moderate to strong 1 Weak 2 None
| ( ) |
( ) | 2. Wish to Die 0 None 1 Weak 2 Moderate to strong
| ( ) |
( ) | 3. Reasons for Living/Dying 0 For living outweigh for dying 1 About equal 2 For dying outweigh for living
| ( ) |
( ) | 4. Desire to Make Active Suicide Attempt 0 None 1 Weak 2 Moderate to strong
| ( ) |
( ) | 5. Passive Suicidal Attempt 0 Would take precautions to save life 1 Would leave life/death to chance (e.g., carelessly crossing a busy street) 2 Would avoid steps necessary to save or maintain life (e.g., diabetic ceasing to take insulin) | ( ) |
| If all four code entries for Items 4 and 5 are "0," skip Sections II, III, and IV. | |
II. Characteristics of Suicide Ideation/Wish | ||
( ) | 6. Time Dimension: Duration 0 Brief, fleeting periods 1 Longer periods 2 Continuous (chronic), or almost continuous
| ( ) |
( ) | 7. Time Dimension: Frequency 0 Rare, occasional 1 Intermittent 2 Persistent or continuous
| ( ) |
( ) | 8. Attitude Toward Ideation/Wish 0 Rejecting 1 Ambivalent; indifferent 2 Accepting
| ( ) |
( ) | 9. Control Over Suicidal Action/Acting Out Wish 0 Has sense of control 1 Unsure of control 2 Has no sense of control
| ( ) |
( ) | 10. Deterrents to Active Attempt (e.g., family, religion; possibility of serious injury if unsuccessful; irreversibility) 0 Would not attempt suicide because of a deterrent 1 Some concern about deterrents 2 Minimal or no concern about deterrents Indicate deterrents, if any:_________________
| ( ) |
( ) | 11. Reason for Contemplated Attempt 0 To manipulate the environment; get attention revenge 1 Combination of "0" and "2" 2 Escape, surcease, solve problems
| ( ) |
III. Characteristics of Contemplated Attempt | ||
( ) | 12. Method: Specificity/Planning 0 Not considered 1 Considered, but details not worked out 2 Details worked out/well formulated
| ( ) |
( ) | 13.Method: Availability/Opportunity 0 Method not available; no opportunity 1 Method would take time/effort; opportunity not readily available 2a Method and opportunity available 2b Future opportunity or availability of method anticipated
| ( ) |
( ) | 14. Sense of "Capability" to Carry Out Attempt 0 No courage, too weak, afraid, incompetent 1 Unsure of courage, competence 2 Sure of competence, courage
| ( ) |
( ) | 15. Expectancy/Anticipation of Actual Attempt 0 No 1 Uncertain, not sure 2 Yes | |
IV. Actualization of Contemplated Attempt | ||
( ) | 16.Actual Preparation 0 None 1 Partial (e.g., starting to collect pills) 2 Complete (e.g., had pills, razor, loaded gun)
| ( ) |
( ) | 17.Suicide Note 0 None 1 Started but not completed; only thought about 2 Completed
| ( ) |
( ) | 18. Final Acts in Anticipation of Death (e.g., insurance, will, gifts) 0 None 1 Thought about or made some arrangements 2 Made definite plans or completed arrangements
| ( ) |
( ) | 19. Deception/Concealment of Contemplated Attempt (Refers to communication of ideation to interviewing clinician) 0 Revealed ideas openly 1 Held back on revealing 2 Attempted to deceive, conceal, lie | ( ) |
V. Background Factors | ||
( ) | 20. Previous Suicide Attempts 0 None 1 One 2 More than one
| ( ) |
( ) | 21. Intent to Die Associated with Last Attempt (if N/A enter "8") 0 Low 1 Moderate; ambivalent, unsure 2 High
| ( ) |
Scoring
Each item is rated on a 3-point scale ranging from 0 to 2 according to suicidal intensity. The SSI is scored by adding up the ratings (0-2) from the first 19 items.
Personnel and Training Required
The interviewer must be trained to conduct personal interviews with individuals from the general population. The interviewer must be trained and found to be competent (i.e., tested by an expert) at the completion of personal interviews. The interviewer should be trained to prompt respondents further if a "don’t know" response is provided.
Equipment Needs
The PhenX Working Group acknowledges these questions can be administered by the interviewer in a computerized or non-computerized format (i.e., paper-and-pencil instrument). Computer software is necessary to develop computer-assisted instruments. The interviewer will require a laptop computer/handheld computer to administer a computer-assisted questionnaire.
Requirements
Requirement Category | Required |
---|---|
Major equipment | No |
Specialized training | No |
Specialized requirements for biospecimen collection | No |
Average time of greater than 15 minutes in an unaffected individual | No |
Mode of Administration
Interviewer-administered questionnaire
Lifestage
Adult
Participants
Adults, ages 17 and older
Selection Rationale
The Scale for Suicide Ideation (SSI) is a brief, low-burden questionnaire that is widely used in clinical trials that focus on suicidal ideation. The SSI is sensitive to change, with good convergent validity, interrater reliability, internal consistency, and predictive validity for suicide attempts and death by suicide. Additionally, the SSI questions correspond to U.S. Food and Drug Administration definitions of suicidal ideation (Guidance for Industry Suicidal Ideation and Behavior: Prospective Assessment of Occurrence in Clinical Trials Office of Communications, Division of Drug Information Center for Drug Evaluation and Research Food and Drug Administration, 2012).
Language
English
Standards
Standard | Name | ID | Source |
---|---|---|---|
Human Phenotype Ontology | Suicidal Ideation | HP:0031599 | HPO |
caDSR Form | PhenX PX640202 - Intensity Of Suicidal Ideation Continuum Adult | 6232758 | caDSR Form |
Derived Variables
None
Process and Review
Not applicable.
Protocol Name from Source
The Scale for Suicide Ideation (SSI)
Source
Beck, A. T., Kovacs, M., & Weissman, A. (1979). Assessment of suicidal intention: The Scale for Suicide Ideation. Journal of Consulting and Clinical Psychology, 47(2), 343-352.
The Scale for Suicide Ideation (SSI) is not proprietary and is available to researchers from Dr. Aaron Beck: abeck@mail.med.upenn.edu.
General References
Beck, A. T., Brown, G. K., & Steer, R. A. (1997). Psychometric characteristics of the Scale for Suicide Ideation with psychiatric outpatients. Behavior Research and Therapy, 35(11), 1039-1046.
Beck, A. T., Brown, G. K., Steer, R. A., Dahlsgaard, K. K., & Grisham, J. R. (1997). Suicide ideation at its worst point: A predictor of eventual suicide in psychiatric outpatients. Suicide and Life-Threatening Behavior 29(1), 1-9.
Beck, A. T., Kovacs, M., & Weissman, A. (1979). Assessment of suicidal intention: The Scale for Suicide Ideation. Journal of Consulting and Clinical Psychology, 47(2), 343-352.
Center for Drug Evaluation and Research (CDER). (2012). Guidance for industry suicidal ideation and behavior: Prospective assessment of occurrence in clinical trials. Rockville, MD: U.S. Department of Health and Human Services, U.S. Food and Drug Administration.
Protocol ID
640202
Variables
Export VariablesVariable Name | Variable ID | Variable Description | dbGaP Mapping | |
---|---|---|---|---|
PX640202_Actual_Suicide_Preparation_Current | ||||
PX640202170000 | Actual Preparation | N/A | ||
PX640202_Actual_Suicide_Preparation_Worst | ||||
PX640202390000 | Actual Preparation | N/A | ||
PX640202_Attitude_Toward_Ideation_Current | ||||
PX640202080000 | Attitude Toward Ideation/Wish | N/A | ||
PX640202_Attitude_Toward_Ideation_Worst | ||||
PX640202300000 | Attitude Toward Ideation/Wish | N/A | ||
PX640202_Control_Over_Suicidal_Action_Current | ||||
PX640202090000 | Control Over Suicidal Action/Acting Out Wish | N/A | ||
PX640202_Control_Over_Suicidal_Action_Worst | ||||
PX640202310000 | Control Over Suicidal Action/Acting Out Wish | N/A | ||
PX640202_Desire_Active_Suicide_Attempt_Current | ||||
PX640202040000 | Desire to Make Active Suicide Attempt | N/A | ||
PX640202_Desire_Active_Suicide_Attempt_Worst | ||||
PX640202260000 | Desire to Make Active Suicide Attempt | N/A | ||
PX640202_Deterrents_Active_SuicideAttempt_Current | ||||
PX640202100000 | Deterrents to Active Attempt (e.g., family, more | N/A | ||
PX640202_Deterrents_Active_SuicideAttempt_Indicate_Current | ||||
PX640202110000 | Deterrents to Active Attempt (e.g., family, more | N/A | ||
PX640202_Deterrents_Active_SuicideAttempt_Indicate_Worst | ||||
PX640202330000 | Deterrents to Active Attempt (e.g., family, more | N/A | ||
PX640202_Deterrents_Active_SuicideAttempt_Worst | ||||
PX640202320000 | Deterrents to Active Attempt (e.g., family, more | N/A | ||
PX640202_Expectancy_Anticipation_Suicide_Attempt_Current | ||||
PX640202160000 | Expectancy/Anticipation of Actual Attempt | N/A | ||
PX640202_Expectancy_Anticipation_Suicide_Attempt_Worst | ||||
PX640202380000 | Expectancy/Anticipation of Actual Attempt | N/A | ||
PX640202_Intent_Die_LastSuicideAttempt_Current | ||||
PX640202220000 | Intent to Die Associated with Last Attempt | N/A | ||
PX640202_Intent_Die_LastSuicideAttempt_Worst | ||||
PX640202440000 | Intent to Die Associated with Last Attempt | N/A | ||
PX640202_Passive_Suicidal_Attempt_Current | ||||
PX640202050000 | Passive Suicidal Attempt | N/A | ||
PX640202_Passive_Suicidal_Attempt_Worst | ||||
PX640202270000 | Passive Suicidal Attempt | N/A | ||
PX640202_Previous_Suicide_Events | ||||
PX640202430000 | Previous Suicide Attempts | N/A | ||
PX640202_Previous_Suicide_Events | ||||
PX640202210000 | Previous Suicide Attempts | N/A | ||
PX640202_Reasons_Contemplated_Suicide_Attempt_Current | ||||
PX640202120000 | Reason for Contemplated Attempt | N/A | ||
PX640202_Reasons_Contemplated_Suicide_Attempt_Worst | ||||
PX640202340000 | Reason for Contemplated Attempt | N/A | ||
PX640202_Reasons_For_LivingDying_Current | ||||
PX640202030000 | Reasons for Living/Dying | N/A | ||
PX640202_Reasons_For_LivingDying_Worst | ||||
PX640202250000 | Reasons for Living/Dying | N/A | ||
PX640202_Sense_Of_Suicide_Capability_Current | ||||
PX640202150000 | Sense of Capability to Carry Out Attempt | N/A | ||
PX640202_Sense_Of_Suicide_Capability_Worst | ||||
PX640202370000 | Sense of Capability to Carry Out Attempt | N/A | ||
PX640202_Suicide_Deception_Contemplated_Attempt_Current | ||||
PX640202200000 | Deception/Concealment of Contemplated Attempt | N/A | ||
PX640202_Suicide_Deception_Contemplated_Attempt_Worst | ||||
PX640202420000 | Deception/Concealment of Contemplated Attempt | N/A | ||
PX640202_Suicide_Final_Acts | ||||
PX640202410000 | Final Acts in Anticipation of Death (e.g., more | N/A | ||
PX640202_Suicide_Final_Acts | ||||
PX640202190000 | Final Acts in Anticipation of Death (e.g., more | N/A | ||
PX640202_Suicide_Method_Availability_Opportunity_Current | ||||
PX640202140000 | Method: Availability/Opportunity | N/A | ||
PX640202_Suicide_Method_Availability_Opportunity_Worst | ||||
PX640202360000 | Method: Availability/Opportunity | N/A | ||
PX640202_Suicide_Method_Specificity_Planning_Current | ||||
PX640202130000 | Method: Specificity/Planning | N/A | ||
PX640202_Suicide_Method_Specificity_Planning_Worst | ||||
PX640202350000 | Method: Specificity/Planning | N/A | ||
PX640202_Suicide_Note_Current | ||||
PX640202180000 | Suicide Note | N/A | ||
PX640202_Suicide_Note_Worst | ||||
PX640202400000 | Suicide Note | N/A | ||
PX640202_Time_Dimension_Duration_Current | ||||
PX640202060000 | Time Dimension: Duration | N/A | ||
PX640202_Time_Dimension_Duration_Worst | ||||
PX640202280000 | Time Dimension: Duration | N/A | ||
PX640202_Time_Dimension_Frequency_Current | ||||
PX640202070000 | Time Dimension: Frequency | N/A | ||
PX640202_Time_Dimension_Frequency_Worst | ||||
PX640202290000 | Time Dimension: Frequency | N/A | ||
PX640202_Wish_To_Die_Current | ||||
PX640202020000 | Wish to Die | N/A | ||
PX640202_Wish_To_Die_Worst | ||||
PX640202240000 | Wish to Die | N/A | ||
PX640202_Wish_To_Live_Current | ||||
PX640202010000 | Wish to Live | N/A | ||
PX640202_Wish_To_Live_Worst | ||||
PX640202230000 | Wish to Live | N/A |
Measure Name
Intensity of Suicidal Ideation (Continuum)
Release Date
November 21, 2014
Definition
A questionnaire to measure the degree of suicidal ideation.
Purpose
Suicidal ideation can indicate an increased risk for suicidal attempts. This measure can be used to determine levels of suicidal risk and aid in making clinical decisions about care. In contrast to the PhenX measure Classification of Suicidal Ideation and Suicidal Behavior, which distinguishes and classifies suicidal ideation and behavior separately, this measure considers suicidal ideation existing as a continuous scale within a single construct.
Keywords
suicide, Suicide intent, Suicide Ideation, suicidal ideation, Wish to live, Wish to die, Reason for living, Suicidal Ideation Questionnaire-Junior, SIQ-JR, Scale for Suicide Ideation, SSI, proprietary
Measure Protocols
Protocol ID | Protocol Name |
---|---|
640201 | Intensity of Suicidal Ideation (Continuum) - Adolescent |
640202 | Intensity of Suicidal Ideation (Continuum) - Adult |
Publications
Clifford, T. (2024) Social Determinants of Health Journal of Perianesthesia Nursing. 2024 April; 39(2): 329-330. doi: 10.1016/j.jopan.2024.01.008
Goodman, M., et al. (2020) Group (?Project Life Force?) versus individual suicide safety planning: A randomized clinical trial. Contemporary Clinical Trials Communications. 2020 January; 17: 100520. doi: 10.1016/j.conctc.2020.100520
Bryan, C. J., et al. (2019) The PRImary care Screening Methods (PRISM) study: Rationale and design considerations. Contemporary Clinical Trials. 2019 September; 84: 105823. doi: 10.1016/j.cct.2019.105823