Subjects will complete 12 weeks of cardiac rehabilitation as per clinical care and utilize a voice analysis smartphone app.

Subjects will complete 12 weeks of cardiac rehabilitation as per clinical care.

Smartphone application that utilizes voice biomarkers to assess for potential presence and severity of depression and anxiety

Measured using the self-reported Patient Health Questionnaire-9 (PHQ-9) to assess for major depressive disorder. Possible score range from 0 to 27, with higher scores indicating a worse outcome/greater severity of depressive symptoms.

Measured using the self-reported Generalized Anxiety Disorder 7-Item Scale (GAD-7) that assesses anxiety symptoms. Possible score range from 0 to 21, with higher scores indicating a worse outcome/greater severity of anxiety symptoms.

Measured using the self-reported Perceived Stress Scale-14 (PSS-14), a 14 item questionnaire which assesses the degree to which situations in life are stressful within the last month. Each item is scored on a 5 point Likert scale from 0 (never) to 4 (very often), higher total scores indicate a worse outcome/greater severity of perceived stress.

Measured using the self-reported abbreviated generic Quality of Life Scale developed through the World Health Organization (WHOQOL-BREF) questionnaire that assesses an individual's perceptions of their health and well-being within the last two weeks. Each item is scored on a 5 point Likert scale, higher scores indicate greater perceived quality of life.

Measured using the self-reported Current Health Behaviors (HB) questionnaire, a 13 item questionnaire which assesses behaviors and life circumstances during the last month. Each item is scored on a 10 point Likert scale, higher scores indicate better outcome.