Savvy System Project

The CES-D scale is a brief self-report scale designed to measure self-reported symptoms associated with depression experienced in the past week. It includes 20 items comprising six scales reflecting major facets of depression: depressed mood, feelings of guilt and worthlessness, feelings of helplessness and hopelessness, psychomotor retardation, loss of appetite, and sleep disturbance. Response options range from 0 to 3 for each item (0 = Rarely or None of the Time, 1 = Some or Little of the Time, 2 = Moderately or Much of the time, 3 = Most or Almost All the Time). Scores range from 0 to 60, with high scores indicating greater depressive symptoms.

State-Trait Anxiety Inventory scale - 20-item 4-point Likert scale is sensitive to changes in transitory anxiety. State anxiety items include: "I am tense; I am worried" and "I feel calm; I feel secure." Trait anxiety items include: "I worry too much over something that really doesn't matter" and "I am content; I am a steady person." All items are rated on a 4-point scale (e.g., from "Almost Never" (0) to "Almost Always" (3)); Range: 0-60. Higher scores indicate greater anxiety.

Zarit Burden Inventory (ZBI) score is a 22-item Likert scale. Each item is a statement which the caregiver is asked to endorse using a 5-point scale, scored "Never" (0) to "Nearly Always" (4); Range: 0-88. Total score is obtained by summing all items endorsed. Higher scores indicate greater perceived burden.

The Pearlin Mastery (PM) scale measures the extent to which an individual regards their life chances as being under their personal control rather than fatalistically ruled. Response options: 4-point Likert scale, 1,"Strongly disagree" and 4,"Strongly agree". Items are summed, yielding a range from 7 to 28. Higher scores indicate greater levels of mastery.

Revised Memory and Behavior Problem Checklist is a 24-item two-part Likert scale that assesses (Part 1) caregiver reported frequency of patient behaviors and (Part 2) caregiver's responreaction to each behavior, or the extent of distress experienced. The frequency of behaviors is assessed based on a Likert-scale of 0 to (0 = never occurs, 1 = occurs infrequently and not in the last week, 2 = occurred 1-2 times in the last week, 3 = occurred 3-6 times in the last week, and 4 = occurs daily or more often); Range: 0-96. Reactions are assessed by asking how" upsetting" the behavior was on a Likert scale of 0 to 4 (0 = Not at all, 1= a little, 2 = moderately, 3 = very much, and 4 =extremely); Range: 0-96. The two parts of the scale yield a summary score - higher scores indicate higher frequency of patient behaviors and greater levels of caregiver distress, respectively.