MHT has been used to collect rich sets of longitudinal self-report ratings from patients while they live their daily lives in the community; populations studied include adults with depression, premenstrual syndrome, and bipolar disorder (for as long as 18 months), as well as teens with mood swings (for as long as nine months). Adherence to daily (or more frequent) symptom reporting using MHT in these studies has been very good, with adherence rates of 75±5 % over the duration of the studies.