The Suicidal Ideation Attributes Scale (<scp>SIDAS</scp>): Community‐Based Validation Study of a New Scale for the Measurement of Suicidal Ideation

While suicide prevention efforts are increasingly being delivered using technology, no scales have been developed specifically for web‐based use. The Suicidal Ideation Attributes Scale ( SIDAS ) was developed and validated as a brief, web‐based measure for severity of suicidal ideation, using an online survey of Australian adults ( n = 1,352). The SIDAS demonstrated high internal consistency and good convergent validity. Frequency and controllability of thoughts were more strongly associated with suicide plans and attempts than other attributes assessed. Scores ≥ 21 indicated high risk of suicide behavior. The SIDAS appears to be a valid web‐based measure for severity of suicidal ideation.