In Psychometrics of the M3 Checklist, Depression (Major depressive disorder) has 0.83 Sensitivity and Bipolar has 0.88, while Anxiety has 0.78 Specificity and PTSD has 0.76.
The My Mood Monitor Screen (aka M3 Checklist) is a quick, validated, self-rated, multi-dimensional mental health symptom checklist that screens for and monitors changes in potential mood and anxiety symptoms. Depression 0.84 
