Piloting a Brief, Online Intervention for Suicidality in Sexual and Gender Minority Youth

Suicidal Ideation Thoughts and Behaviours Interview - Revised (SITBI -R; Gratch et al., 2022). Select items from the SITBI-R will be administered to capture suicidal behaviour, including frequency and severity of suicide attempts.

Self-Compassion Scale - Short Form (SCS-SF; Raes et al., 2011). The SCS-SF is a 12-item measure that assesses trait self-compassion. Each item is rated on a 5-point scale of how the participant typically reacts to themselves during difficult times, ranging from Almost never to Almost Always. Six subscales are computed corresponding to the six components of self-compassion based on Neff's (2003) conceptualization: Self-Kindness, Self-Judgement, Common Humanity, Isolation, Mindfulness, and Overidentification. A total score is computed by averaging the six subscale total scores. Higher scores indicated higher self-compassion. Sample items include I try to see my failing as part of the human condition and I'm disapproving and judgmental about my own flaws and inadequacies.

Patient Health Questionnaire - 9 (PHQ-9; Kroenke et al., 2001). The PHQ-9 a self-report assessment of depressive symptoms. The PHQ-9 includes nine items that ask participants to rate how frequently they experienced each problem (i.e., Little interest or pleasure in doing things, Feeling tired or having low energy) over the past two weeks, with a 4-point scale of frequency (i.e., Not at all, Several days, More than half the days, Nearly every day). A total score is summed and can range from 0-27. Higher total scores indicate greater severity of depressive symptoms. An additional item not included in the total score asks participants to rate how difficult the problems they indicated make it for them to do work, take care of things at home, and get along with other people.

Hopelessness Scale for Children (HSC; Kazdin et al., 1983). The HSC includes 17 true/false items assessing hopelessness in children as young as 5 years old. Total scores are summed and the higher the total score, the greater the hopelessness for the future. Sample items include I will have more good times than bad times and I don't think I will get what I really want.

Generalized Anxiety Disorder - 7 (GAD-7; Spitzer et al., 2006) . The GAD-7 is a self-report assessment of anxiety. The respondent indicates how often they have experienced each of seven listed symptoms over the past two weeks, including items such as Not being able to stop or control worrying and Becoming easily annoyed or irritable. Items are rated on a 4-point scale of frequency (i.e., Not at all, Several days, More than half the days, Nearly every day). Total scores range from 0-21, with higher scores indicating higher severity of anxiety. An additional item not included in the total score asks participants to rate how difficult the problems they indicated make it for them to do work, take care of things at home, and get along with other people.

Difficulties in Emotion Regulation Scale - Short Form (DERS-SF; Kaufman et al., 2016). The DERS-SF is a self-report measure of difficulties regulating emotion. This measure has 18 items that are rated on a 5-point scale assessing how often each item applies to the participant, including the following options: Almost never (0-10%), Sometimes (11-35%), About half of the time (36-65%, Most of the time (66-90%), and Almost always (91-100%). The DERS-SF includes items such as When I'm upset, I have difficulty concentrating and I pay attention to how I feel. A total score and six subscale scores (Strategies, Nonacceptance, Impulse, Goals, Awareness, Clarity) are created by adding item scores and higher scores reflect greater difficulties with emotion regulation. Total scores range from 18-90.