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Table 4 ROC curves for predicting suicidal ideation and suicidal attempts in the last 12 months

From: Validation of the Chinese version of the Reynolds’ suicidal ideation questionnaire: psychometric properties and its short version

Measure Area under curve SEa Asymptotic significanceb Asymptotic 95% CI
ROC curves for predicting suicidal ideation (44 suicidal thoughts out of 711)
SIQ 0.889 0.019 <0.001 0.852-0.926
SIQ-JR 0.891 0.018 <0.001 0.856-0.926
SIQ-JR-4 0.878 0.023 <0.001 0.832-0.923
Depression 0.795 0.033 <0.001 0.731-0.858
Hopelessness 0.661 0.045 <0.001 0.574-0.748
Anxiety 0.709 0.037 <0.001 0.636-0.782
ROC curves for predicting suicide attempts (20 suicide attempts out of 711)
SIQ 0.928 0.016 <0.001 0.897-0.960
SIQ-JR 0.918 0.018 <0.001 0.882-0.953
SIQ-JR-4 0.912 0.020 <0.001 0.872-0.952
Depression 0.850 0.042 <0.001 0.767-0.932
Hopelessness 0.736 0.070 <0.001 0.599-0.873
Anxiety 0.772 0.053 <0.001 0.669-0.875
  1. Note. SIQ = Suicidal Ideation Questionnaire; SIQ-JR = Suicidal Ideation Questionnaire-Junior; SIQ-JR-4 = items 2, 3, 4, and 11 of the SIQ-JR.
  2. a. Under the nonpmetric assumption.
  3. b. Null hypothesis: true area = 0.5.