Frequency of suicidal ideation inventory: A reliability generalization meta-analysis.

The objectives of this reliability generalization meta-analysis were to estimate the overall reliability of the Frequency of Suicidal Ideation Inventory (FSII), a short, easily administered test developed to assess suicidal ideation and to examine possible moderating variables. A systematic search was conducted in five databases from the year of publication (2016) of the FSII until March 2024. All studies that applied the FSII and reported a Cronbach's alpha coefficient were included. Analyses were performed using a random effects model applying Bonett's transformation. Our analysis of 32 studies (k = 39) yielded an overall alpha of .91 (95% CI = .90, .92). We found that the type of administration, population, and language of the FSII moderated its reliability, which is high overall and appropriate for use in both research and clinical settings.