A study of ten thousand women found depression in 14% of mothers. Among these participants, 40.1% experienced postpartum depression, 33.4% experienced depression while pregnant, and 26.5% experienced depression before pregnancy and 19.3% expressed thoughts of self-harm. Nearly 66% had a comorbid anxiety disorder and 22.6% met diagnostic criteria for bipolar disorder. Younger, publicly insured, less educated, single, and African-American women were more likely to meet criteria for depression. Wisner, K., Sit, D., McShea, M., Rizzo, D., Zoretich, R., Hughes, C., … & Eng, H. (2013). Onset timing, thoughts of self-harm, and diagnoses in postpartum women with screen-positive depression findings. JAMA Psychiatry. 1-9. Published online March 13, 2013. doi:10.1001/jamapsychiatry.2013.87.