TABLE 2.
Validity Measures Used in Analyses of Items in the Columbia–Suicide Severity Rating Scale (C-SSRS) Using Data From Three Studies
| Subscale and Studya | Measure | Rater | Convergent Validity | Divergent Validity | Predictive Validity | Incremental Validity | Sensitivity to Change | Internal Consistency | Sensitivity and Specificity |
|---|---|---|---|---|---|---|---|---|---|
| Severity of ideation subscale
| |||||||||
| Studies 1, 3 | Scale for Suicide Ideation (current total and worst-point ideation; items 4 and 5 for predictive validity) | Independent evaluator | ✓ | ✓ | ✓ | ||||
| Study 1 | Montgomery-Åsberg Depression Rating Scale (item 10 for convergent validity; items 4, 5, 7, 11, and 12 for divergent validity) | Study psychopharmacologist | ✓ | ✓ | |||||
| Study 1 | Beck Depression Inventory (item 9 for convergent validity; items 15, 16, 18, and 20 for divergent validity) | Self-report | ✓ | ✓ | |||||
| Study 2 | Suicidal Ideation Questionnaire–Junior (total score) | Self-report | ✓ | ✓ | |||||
| Study 1 | Columbia Suicide History Form | Independent evaluator | ✓ | ✓ | ✓ | ✓ | |||
| Study 1 | Suicide evaluation board | Suicide evaluation board (consensus of three suicidology experts) | ✓ | ✓ | ✓ | ✓ | |||
|
| |||||||||
| Intensity of ideation subscale
| |||||||||
| Studies 1, 3 | Scale for Suicide Ideation (current total and worst-point ideation) | Independent evaluator | ✓ | ✓ | |||||
| Study 1 | Montgomery-Åsberg Depression Rating Scale (item 10 for convergent validity; items 4, 5, 7, 11, and 12 for divergent validity) | Study psychopharmacologist | ✓ | ✓ | |||||
| Study 1 | Beck Depression Inventory (item 9 for convergent validity; items 15, 16, 18, and 20 for divergent validity) | Self-report | ✓ | ✓ | |||||
| Study 2 | Suicidal Ideation Questionnaire–Junior | Self-report | ✓ | ✓ | |||||
| Studies 1, 2, 3 | C-SSRS (intensity of ideation subscale, for most severe ideation) | Clinician and independent evaluators | ✓ | ||||||
|
| |||||||||
| Suicidal behavior subscale
| |||||||||
| Studies 1, 3 | Columbia Suicide History Form | Independent evaluator | ✓ | ✓ | ✓ | ||||
|
| |||||||||
| Suicidal behavior lethality
| |||||||||
| Study 3 | Columbia Suicide History Form | Independent evaluator | ✓ | ||||||
a
Study 1 was a treatment study of adolescent suicide attempters (N=124); study 2 was a medication efficacy trial in depressed adolescents (N=312); study 3 was a study of adults presenting to an emergency department for psychiatric reasons (N=237).