Suicide Attempt Self-Injury Interview (SASII): Development, reliability, and validity of a scale to assess suicide attempts and intentional self-injury.

TLDR

The authors developed the Suicide Attempt Self‑Injury Interview (SASII), a tool to assess factors involved in nonfatal suicide attempts and intentional self‑injury. Using four cohorts, they generated SASII items, performed factor and content analyses, evaluated internal consistency, and assessed the final measure’s reliability and validity with collateral instruments, covering variables such as method, lethality, impulsivity, rescue likelihood, intent, motivations, consequences, and habitual self‑injury. The SASII demonstrated very good interrater reliability and adequate validity.

Abstract

The authors describe the development of the Suicide Attempt Self-Injury Interview (SASII), an instrument designed to assess the factors involved in nonfatal suicide attempts and intentional self-injury. Using 4 cohorts of participants, authors generated SASII items and evaluated them with factor and content analyses and internal consistency statistics. The final measure was assessed for reliability and validity with collateral measures. The SASII assesses variables related to method, lethality and impulsivity of the act, likelihood of rescue, suicide intent or ambivalence and other motivations, consequences, and habitual self-injury. The SASII was found to have very good interrater reliability and adequate validity.