1. Diagnostic tests 2: predictive values;Altman;British Medical Journal,1994
2. Diagnostic tests 3: receiver operating characteristic plots;Altman;British Medical Journal,1994
3. Development of suicidal intent scales;Beck,1974
4. Suicide ideation at its worst point: a predictor of eventual suicide in psychiatric outpatients;Beck;Suicide and Life Threatening Behavior,1999
5. Trends in suicide deaths in England and Wales;Charlton;Population Trends,1992