MyMood is an electronic mood-charting tool available to the general population of Sunnybrook Health Sciences Centre (SHSC). This project aims to characterize duration and frequency of use of MyMood by users characteristics and determine if there is any significant variability in duration and frequency of use attributable to users' age, sex, self-reported diagnosis of a mood disorder, and/or prior treatment.

Mental Health Telemetry (MHT) is a software platform developed at Sunnybrook for collecting real-time self-report symptom-rating questionnaire data using patients' cell phones or other portable, Internet-enabled devices. MHT has previously been used in several funded clinical research studies. The mood-disorders-specific version of MHT, which we have named MyMood, collects information on a variety of items including symptom severity, medication adherence, ER visits / hospital admissions, sleep, relationships, and life events. In our previous project, we made MyMood available to the general population of SHSC by integrating it into Sunnybrook's MyChart personal health record system and collected feedback from users, using the feedback to refine MyMood. In the current project, we aim to characterize long-term patterns of MyMood usage, examining how duration and frequency of use are affected by demographic and clinical characteristics of users (age, sex, present / reported diagnosis of a mood disorder, and/or prior treatment).

Please note that the _only_ route for entry into this study is self-referral: interested individuals who have signed themselves up for MyChart can choose to begin using MyMood on their own. There is no reason to contact the study team regarding recruitment.

Inclusion Criteria:

• Registered user of Sunnybrook Health Sciences Centre "MyChart" electronic patient portal

Exclusion Criteria:

• n/a

Registered user of Sunnybrook Health Sciences Centre "MyChart" electronic patient portal