Table 1.

Previous study on CBT in PD patients

Study	CBT components	Length
Dobkin et al7	Behavioral activation, thought monitoring and cognitive restructuring, relaxation training, worry control, sleep hygiene	Ten individual sessions (60 minutes) + four caregiver sessions
Troeung et al18	Psycho-education, relaxation training, cognitive therapy, problem solving, and behavioral activation, the role of PD, loss and stress leading to depression and anxiety, activity scheduling and pacing around the on–off effect in PD, motor symptoms triggering panic and anxiety, the fear of falling, and preparing for disease progression	Eight group sessions (2 hours)
Veazey et al28	Depression and anxiety education, relaxation training, cognitive therapy, problem solving, activity scheduling, and sleep management skills	Eight telephone sessions
Simons et al27	Self-monitoring, behavioral health empowerment through pleasant activities, stress management, anxiety and depression, social competence, social support	Eight group educational programs
This study	Psycho-education on depression and anxiety, anxiety management skill, cognitive restructuring, behavioral experiment, communication skill, relapse prevention	Six individual sessions

Abbreviations: CBT, cognitive behavioral therapy; PD, Parkinson’s disease.