Accounting for diversity in the treatment of suicide and self-injury: A systematic review of the past 50 years of randomized controlled trials.

PURPOSE: Patients receiving treatment for self-injurious thoughts and behaviors (SITBs) have diverse backgrounds, yet it remains unclear exactly who is represented in the current SITB treatment literature. METHODS: We conducted a systematic review of the past 50 years of randomized controlled trials (RCTs) testing SITB treatments to evaluate sampling practices and reporting of sample characteristics, as well as inclusion of global populations across the included 525 papers. We also assessed changes over the past five decades in these three domains. RESULTS: SITB RCTs frequently reported age and sex (98.6%-95.1%), less frequently reported race (83.4%-38.6%), socioeconomic status (48.1%-46.1%) and ethnicity (41.9%-8.1%), and rarely reported LGBTQ+ status (3.7%-1.6%). U.S.-based RCTs featured predominantly White, non-Hispanic, and non-LGBTQ+ samples. Most RCTs were conducted in high-income North American or European countries. Sample reporting practices, sample representativeness, and inclusion of global populations modestly and inconsistently improved over time. CONCLUSIONS: There has not been substantial improvement in reporting practices, sample representativeness, or inclusion of global populations in SITB RCTs over the past 50 years. Acknowledging who is being studied and representing diverse populations in SITB treatment research is key to connecting research advances with those who may need it most.

Association between perceived social support and suicide ideation distress among psychiatric inpatients: The role of thwarted interpersonal needs.

INTRODUCTION: The interpersonal theory of suicide posits that thwarted belongingness (TB) and perceived burdensomeness (PB) are proximal risk factors for suicide ideation; however, there are mixed results regarding this hypothesis among psychiatric inpatients. OBJECTIVE: The current study examined the mediating role of TB and PB in the relationship between perceived social support (i.e., support from family, friends, a significant other, and total) and suicide ideation distress among psychiatric inpatients. METHODS: Participants (short-term psychiatric inpatients; N = 139) were administered self-report assessments cross-sectionally. RESULTS: Nonparametric mediation results indicated that the total (additive) indirect effects of TB and PB, in parallel, were significant in all models, yet there were only significant specific (unique) indirect effects of PB. CONCLUSION: TB and PB, in combination, may be proximal risk factors for suicide ideation distress among psychiatric inpatients with lower perceived social support from family, friends, a significant other, and in total. These findings are congruent with the interpersonal theory of suicide's propositions that the combination of TB and PB increases the risk for suicide ideation. Clinicians may consider using interventions that target increasing perceived social support and decreasing TB and PB (i.e., cognitive behavioral therapy and social skills training) for this population.