Table 1 Risk classification system for youth suicidal behavior

Class I: Crisis, Imminent Risk

• Suicide attempt in the past 4 weeks OR

• Suicidal ideation (in the past week) AND

o a suicidal plan (in the past 4 weeks) OR

o a suicidal attempt (prior to the past 4 weeks)

Class II: Crisis, Non-Imminent Risk

• Suicidal attempt (in the past year) AND

o high internalizing disorder symptoms (in the past year) OR

o moderate internalizing disorder symptoms (in the past year) AND high substance use disorder symptoms (in the past year) OR

o suicidal ideation (in the past month) OR

• Suicidal ideation (in the past month) AND

o high internalizing disorder symptoms (in the past year) OR

• Suicidal plan (in the past month) OR

• Suicidal ideation (in the past week) OR

• Non-suicidal self-injury (in the past 3 months)

Class III: Non-crisis, in need of Behavioral Health services

• Suicidal attempt (in the past year or in lifetime) OR

• Suicidal ideation (in the past month)

a

• High internalizing disorder symptoms (in the past year) OR

• Moderate internalizing disorder symptoms (in the past year) and high substance use disorder symptoms (in the past year) OR

• High substance use disorder symptoms (in the past year) OR

• Suicidal plan (in the past year) AND

o high internalizing disorder symptoms (in the past year) OR

o moderate internalizing disorder symptoms (in the past year) AND high substance use disorder symptoms (in the past year) OR

o suicidal ideation (in the past year)