Assessing suicide risk with the Clinical Interview for Psychotic Disorders (CIPD): Preliminary reliability and validity of the Suicide Risk Scale for Psychosis (SRS-P)

Abstract

BackgroundSuicide risk is an important variable to consider both in assessment and throughout the therapeutic process in psychotic disorders. The SRS-P is an 18-item scale computed from the patient and clinician-rated scores obtained in the CIPD. The scale comprises lifetime assessment of depressed mood, anhedonia and its current interference and severity, current and past feelings of hopelessness, suicidal ideation, ‘voices’ about suicide, and suicide-related behaviors.AimsTo assess reliability and convergent validity of the SRS-P in a sample of participants with psychosis.MethodsThe sample comprised 22 participants (68.2% male), single (72.7%), between 19 and 47 years old (M = 31.05; SD = 7.088), with 4–17 years of education (M = 11.77; SD = 3.176), employed (50%). The most prevalent diagnosis was schizophrenia (68.2%) and the participants had a mean of 1.90 hospitalizations (SD = 2.548). The mean age of illness onset was 23.57 years (SD = 5.555). The participants were assessed with the CIPD, Depression, Anxiety and Stress Scales-21, Forms of Self-Criticism and Reassurance Scale, Self-Compassion Scale, Other as Shamer Scale and the Empowerment with Psychotic Symptoms Scales.ResultsThe SRS-P has shown good reliability (α = .87) and validity in relation to depressive symptoms (r = .67; P = .001), anxiety (r = .74; P < .001), stress (r = .59; P = .004), inadequate self (r = .43; P = .046), hated self (r = .54; P = .009), reassured self (r = –.65; P = .001), self-compassion (r = –.63; P = .002), shame (r = .46; P = .033) and empowerment regarding positive symptoms (r = –.54; P = .015).ConclusionsThe SRS-P presented adequate reliability and convergent-divergent validity. Further studies are planned in order to test the factorial structure of the scale and confirm the presented results in a larger sample.Disclosure of interestThe authors have not supplied their declaration of competing interest.