Outcome variable & measures	Description of measure
Physical function
Patient concerns assessment (PCA) [14], Range 0–29	PCA is symptom checklist (α = 0.88) that measures physical symptoms and fears common in the first few months after ICD implantation
Short form health Survey (SF-12) [15], Range PCS 15–60, Range MCS 24–67	SF-12 is a 12-item measure of general health related to physical and mental health. Two component summary scales of physical (PCS, α = 0.94) and mental health (MCS, α = 0.94) are derived
Cardiac arrhythmias, Range 0–12	ICD shocks and heart rhythm stability assessed using interrogation reports from ICD de-vices during routine follow-up visits. The total number of ICD shocks received whether or not appropriate for the cardiac rhythm were recorded
Psychological adjustment
Anxiety [16], Range 20–68	State-Trait Anxiety Inventory (STAI) measure of anxiety (α = 0.84) is used extensively in cardiovascular populations. Higher scores denote higher anxiety. This study used the state scale of the inventory only
Depression [17], Range 0–51	Center for Epidemiologic Studies Depression (CES-D)16 is a measure (α = 0.87) of depressive symptomatology in the general population with an emphasis on depressed mood
Self-efficacy
Self-efficacy expectations [18], Range 2–10	Sudden cardiac arrest -self efficacy (SCA-SE) scale focuses on self-efficacy expectations about one’s ability to manage common problems after sudden cardiac arrest and an ICD (α = 0.93)
Self-management behaviors [18], Range 0–10	Sudden cardiac arrest behaviors (SCA-B) scale focuses on behaviors required to manage common problems after sudden cardiac arrest and an ICD (α = 0.89)
Outcome expectations [18], Range 2–5	Sudden cardiac arrest outcome expectations (SCA-OE) (α = 0.81) focus on perceived consequences of engaging in self-management behaviors after sudden cardiac arrest and an ICD