AN EXTENDED COHORT STUDY TO INVESTIGATE SUICIDAL BEHAVIOR IN SPAIN (THE SURVIVE 2 STUDY)

The Columbia-Suicide Severity Rating Scale (C-SSRS) is a brief, structured interview that uses simple questions about suicidal thoughts and behaviors to identify whether someone is at risk for suicide and how severe and urgent that risk is.

Nine-item self-report questionnaire that measures the severity of depressive symptoms over the past 2 weeks; total score ranges from 0 to 27, with higher scores indicating more severe depression.

Brief Description Seven-item self-report questionnaire that assesses symptoms of generalized anxiety during the past 2 weeks; total score ranges from 0 to 21, with higher scores indicating more severe anxiety.

Self-report questionnaire that screens for symptoms of borderline personality disorder; total score reflects the severity of borderline traits.

Checklist of major stressful life events; higher counts indicate greater exposure to recent stressors.

Twenty-eight-item self-report measure that assesses history of childhood maltreatment across five domains (emotional, physical and sexual abuse, and emotional and physical neglect); higher subscale and total scores indicate more severe childhood trauma.

Five-item self-report scale that measures insomnia symptoms and their impact; total score indicates insomnia severity

Three-item self-report questionnaire that screens for hazardous alcohol consumption; higher scores indicate higher risk drinking

Two-item index derived from cigarettes per day and time to first cigarette; higher scores indicate greater nicotine dependence

Self-report screening tool for problematic use of non-alcohol drugs; total score reflects severity of drug-related problems

Eighteen-item self-report measure of problems in emotion regulation across several domains; higher scores reflect greater difficulties regulating emotions.

Self-report questionnaire with 30 items that evaluates different facets of impulsivity (attentional, motor and non-planning); higher total scores indicate greater impulsive traits.

Standardized questionnaire that assesses health-related quality of life across five dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression); higher index values reflect better perceived health.

Three-item self-report scale that screens for perceived loneliness and social isolation; higher scores indicate greater feelings of loneliness

Eight-item self-report questionnaire that assesses difficulties in understanding one's own and others' mental states; scores reflect problems in reflective functioning/mentalizing.

Self-report questionnaire that evaluates symptoms and severity of bulimic eating behaviors; higher scores indicate more severe bulimic pathology

Self-report questionnaire that measures the frequency and intensity of chronic feelings of emptiness; higher scores indicate more severe feelings of emptiness, often associated with borderline and suicidal presentations.

Brief questionnaire that assesses the size and frequency of supportive contacts with family and friends; lower scores indicate higher risk of social isolation

Study-specific questionnaire developed by the research team to collect sociodemographic and basic clinical information (for example age, sex, education, employment, living situation, psychiatric history, and treatment). Data will be used to describe the sample and as covariates in analyses