Development & Testing of a Decision Aid for LVAD Placement (VADDA)

Questionnaire measuring subject's knowledge about Left Ventricular Assist Device therapy. Knowledge is reported on a scale from 1-100, with higher scores indicating greater knowledge. At Baseline, this scale measures LVAD knowledge before patients receive any formal education (from their LVAD coordinators and/or physicians) about LVAD therapy.

Questionnaire measuring subject's knowledge about Left Ventricular Assist Device therapy. Knowledge is reported on a scale from 1-100, with higher scores indicating greater knowledge. At this time-point, the scale measures LVAD knowledge at 1 week following both formal education (from the clinic) as well as from our decision aid about LVAD therapy.

Questionnaire measuring subject's knowledge about Left Ventricular Assist Device therapy. Knowledge is reported on a scale from 1-100, with higher scores indicating greater knowledge. At this time-point, the scale measures LVAD knowledge at 1 month following both formal education (from the clinic) as well as from our decision aid about LVAD therapy.

Measures the construct of decisional conflict, using a 5-point Likert scale with 12 question items. All question items have a positive valence, with higher scores indicating lower decision conflict. Scores range from 0-100.

Measures the construct of decisional conflict (at this timepoint, 1 week after baseline), using a 5-point Likert scale with 12 question items. All question items have a positive valence, with higher scores indicating lower decision conflict. Scores range from 0-100.

Measures a participant's perceived degree of shared decision-making about treatment (at this time point: 1 week after baseline). All question items have a positive valence (higher scores indicating greater shared decision-making, a more positive outcome), with scores ranging from 0-100.

Measures a participant's perceived degree of shared decision-making about treatment (at this time point: 1 month after baseline). All question items have a positive valence (higher scores indicating greater shared decision-making, a more positive outcome), with scores ranging from 0-100.

Measures a participant's satisfaction with their decision of treatment (at this time point: 1 month after baseline). All question items have a positive valence (higher scores indicating greater satisfaction with the decision making process, a more positive outcome), with scores ranging from 0-100.

The 'Decision Regret Scale' measures "distress or remorse after a (health care) decision." In a short introductory statement, respondents should be asked to reflect on a specific past decision, and then asked to indicate the extent to which they agree or disagree with the statements in the regret scale by indicating a number from 1 (Strongly Agree) to 5 (Strongly Disagree) that best indicates their level of agreement. Regret is measured at a point in time when the respondent can reflect on the effects of the decision. Items 2 and 4 should be reverse coded so that, for each item, a higher number will indicate more regret. To help others interpret the score more readily with other scales ranging from 0 to 100, these scores can then be converted to a 0-100 scale by subtracting 1 from each item then multiply by 25. To obtain a final score, the items are summed and averaged. A score of 0 means no regret; a score of 100 means high regret.

Measures participants' perceived Satisfaction with Life. Out of 0-30 scale. Higher scores indicate higher satisfaction with life.

Measures participants' perceived Satisfaction with Life. Out of 0-30 scale. Higher scores indicate higher satisfaction with life.

The Preparedness for Decision-Making Scale assesses a patient's perception of how useful a decision aid or other decision support intervention is in preparing the respondent to communicate with their practitioner at a consultation visit and making a health decision (treatment/diagnostic/screening, etc.). Items can be summed and scored (sum the 10 items and divide by 10). B) Scores are converted to a 0-100 scale by: subtracting 1 from the summed score in part a) and multiplying by 25. Higher scores indicate higher perceived level of preparation for decision-making.

Measures the usability and acceptability of the decision aid 1 day after receiving the decision aid tool

A brief patient-report instrument for measuring Shared Decision Making (SDM) in clinical encounters. All question items have a positive valence. Summing up all items leads to a raw total score between 0 and 45. Multiplication of the raw score by 20/9 provides a score forced (transformed) to range from 0 to 100, where 0 indicates the lowest possible level of SDM and 100 indicates the highest extent of SDM. As it is more intuitively interpretable, the authors of the scale encourage the use of the transformed score, which we used.

A brief patient-report instrument for measuring Shared Decision Making (SDM) in clinical encounters. All question items have a positive valence. Summing up all items leads to a raw total score between 0 and 45. Multiplication of the raw score by 20/9 provides a score forced (transformed) to range from 0 to 100, where 0 indicates the lowest possible level of SDM and 100 indicates the highest extent of SDM. As it is more intuitively interpretable, the authors of the scale encourage the use of the transformed score, which we used.

Measure of the degree (percentage) of match in patient-reported preferences related to control over treatment decision at Baseline and 1-Month. This data is based on responses to a 1-item questionnaire (i.e. not a scale). Scores are calculated by counting the frequency of matches in patient-reported preferences at two time points. The results are reported as the number of participants with a 1:1 "match" in preferences at both time points.

Percentage of patients reporting that their ability to envision life with an LVAD was "Somewhat Easy" or "Easy."

Number and percentage of patients reporting that their ability to envision life with an LVAD was "Difficult" or that they had "No idea."

Measures the number and percentage of participants who perceived a strong likelihood of transplant.

Number and Percentage of participants who perceived and strong Likelihood of Transplant after 1-Month follow-up.

Patient-reported estimate of number of years the average patient is able to live after LVAD implant. Participants wrote in a number in a blank space, and numbers were recorded.

Satisfaction with Life Scale, intended to measure respondents' perceived global life satisfaction. Out of 0-30 scale. Higher scores indicate higher satisfaction with life.

Responses to the question: "On a scale of 0 to 100 (0 is the worst health imaginable, 100 is the best health imaginable) what would you rate your health today?"

Responses to the question: "On a scale of 0 to 100 (0 is the worst health imaginable, 100 is the best health imaginable) what would you rate your health today?"

Number of patients forecasting that they will choose LVAD treatment (before their actual decision), measured using a binary score representing yes (1) or no (0) indicating whether a patient predicted they would choose LVAD as a preferred treatment for their advanced heart failure.

Number of patients who definitively choose LVAD treatment, measured using a binary score representing yes (1) or no (0) indicating whether the patient chose LVAD as a preferred treatment for their advanced heart failure.

Number of patients who definitively choose LVAD treatment, measured using a binary score representing yes (1) or no (0) indicating whether the patient chose LVAD as a preferred treatment for their advanced heart failure.

Number and percentage of patients who filled out an Advanced Directive, using a binary measure indicating whether a respondent has filled out an advanced directive (1) or not (0).

Measures the usability and acceptability of the decision aid 1 day after receiving the decision aid tool

Measures the usability and acceptability of the decision aid 1 day after receiving the decision aid tool

Measures the usability and acceptability of the decision aid 1 day after receiving the decision aid tool

Measures the usability and acceptability of the decision aid 1 day after receiving the decision aid tool

Measures the usability and acceptability of the decision aid 1 day after receiving the decision aid tool

Measures the usability and acceptability of the decision aid 1 day after receiving the decision aid tool

This data is based on responses to a 1-item questionnaire (i.e. not a scale). Scores are calculated by counting the frequency of matches in patient-reported preferences at two time points.

This data is based on responses to a 1-item questionnaire (i.e. not a scale). Scores are calculated by counting the frequency of matches in patient-reported preferences at two time points (baseline and 1-month follow-up).