Intended for healthcare professionals

Letters Google’s online screening test for depression

Online screening test for depression is inappropriate

BMJ 2017; 359 doi: (Published 17 October 2017) Cite this as: BMJ 2017;359:j4736
  1. Avril Danczak, GP
  1. Central and South Manchester Specialty Training Programme for General Practice, Health Education England North West, Education and Research Centre, Wythenshawe Hospital, Manchester M23 9LT, UK
  1. avril.danczak{at}

Duckworth and Gilbody debate whether Google should offer an online screening test for depression—namely, the patient health questionnaire 9 (PHQ-9).1

As the website Patient points out, PHQ-9 “is not a screening tool for depression, but it is used to monitor the severity of …

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