From the PubMed abstract: "An increasing number of research designs are using text messaging (SMS) as a means of self-reported symptom and outcome monitoring in a variety of long-term health conditions, including severity ratings of depressed mood. The validity of such a single item SMS score to measure latent depression is not currently known and is vital if SMS data are to inform clinical evaluation in the future."
mFHAST Implications: Opportunity for use of SMS for self-reported outcomes within mental health populations