Tool for Sibling and Children of Someone With Suicidal Thoughts

Changes in perceived pressure: Perceived pressure informal care ('Ervaren druk informele zorg', Pot et al., 1995)

The Perceived pressure informal care ('Ervaren druk informele zorg', Pot et al., 1995) scale is a 9-item self-report scale. Participants rate items to be applicable to them with the options: 'No!', 'No', 'More or less', 'Yes', 'Yes!', where 'No' and 'No!' are scored as 0 and the other options as 1. Total scores of 0-3 indicate little pressure, 4-6 moderate and 7-9 a lot.

Time frame: Change from Baseline (before intervention) to post-test (after 3 days of access to website)

Changes in attitudes: 5 subscales of Attitudes Towards Suicide Scale (Rensberg & Jacobson, 2003; De Clerck et al., 2006)

The ATTS is a 37-item to be scored on a 5-point Likert scale (1= disagree completely to 5 = agree completely) to measure participants' attitudes towards suicide. The included subscales in this study are: incomprehensibility, non-communication, preventability, tabooing, preparedness to prevent

Time frame: Change from Baseline (before intervention) to post-test (after 3 days of access to website)

Changes in hopelessness: Beck Hopelessness Scale (4-item version; Beck et al., 1974; Aish & Wasserman, 2001) and self-developed questionnaire

The BHS A 4-item self-report questionnaire to measure hopelessness in adolescents and adults. Each item is rated as 'true' (score = 1) or 'false' (score = 0) for them over the past week, resulting in a total score ranging from 0 to 4, with higher scores indicating higher levels of hopelessness. Self-developed questionnaire: 4-item self-report questionnaire to measure hopelessness in relation to the loved one, based on the BHS 4-item version. Each item is rated as 'true' (score = 1) or 'false' (score = 0) for them over the past week, resulting in a total score ranging from 0 to 4, with higher scores indicating higher levels of hopelessness in relation to the loved one.