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| ID | Type | Description | Link |
|---|---|---|---|
| 1F30HL152526-01 | U.S. NIH Grant/Contract | View source |
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Publicly available outcome assessments for transplant programs do not make salient that some programs tend to reject many of the hearts they are offered, whereas other programs accept a broader range of donor offers. The investigators use empirical studies to test whether transplant center performance data (i.e. transplant and waitlist outcome statistics) that reflect center donor acceptance rates influence laypersons to evaluate centers with high organ decline rates less favorably than centers with low organ decline rates. 125 heart transplant clinical personnel will be recruited from International Heart and Lung Society (ISHLT) and the Pediatric Heart Transplant Society (PHTS) and randomized to one of two different information presentation conditions. Participants will be asked to view the table of transplant outcomes corresponding to the condition they were randomized to. Each participant is asked to choose the hospital that they would consider to be "higher-performing" between two hospitals: one hospital with a non-selective, "accepting" strategy (takes all donor heart offers), and one hospital with a more selective, "cherrypicking" strategy (tends to reject donor offers that are less than "excellent" quality).
Publicly available outcome assessments for transplant programs do not make salient that some programs tend to reject many of the hearts they are offered, whereas other programs accept a broader range of donor offers. The investigators use empirical studies to test whether transplant center performance data (i.e. transplant and waitlist outcome statistics) that reflect center donor acceptance rates influence laypersons to evaluate centers with high organ decline rates less favorably than centers with low organ decline rates. 125 heart transplant clinical personnel will be recruited from International Heart and Lung Society (ISHLT) and the Pediatric Heart Transplant Society (PHTS) and randomized to one of two different information presentation conditions. Participants will be asked to view the table of transplant outcomes corresponding to the condition they were randomized to. Each participant is asked to choose the hospital that they would consider to be "higher-performing" between two hospitals: one hospital with a non-selective, "accepting" strategy (takes all donor heart offers), and one hospital with a more selective, "cherrypicking" strategy (tends to reject donor offers that are less than "excellent" quality).
Condition 1 ("baseline" condition): view only combined transplant survival (e.g. transplant survival rate not stratified by number and quality of donor hearts accepted at each center)
Condition 2: view only stratified transplant survival (e.g. transplant survival rate stratified into patients who received excellent donor organs and patients who received less than optimal donor organs)
Participants will then be asked to view the table of transplant outcomes corresponding to the condition they were randomized to. Each participant is asked to choose the hospital that they would consider to be "higher-performing" between two hospitals: one hospital with a non-selective, "accepting" strategy (takes all donor heart offers), and one hospital with a more selective, "cherry-picking" strategy (tends to reject donor offers that are less than "excellent" quality). In order to identify the decision process that underlies this choice pattern, the investigators will examine a putative mediator. Specifically, participants will be asked to rate the extent to which they considered patients' chances of getting an excellent heart, avoiding a less-than-optimal heart, and getting any type of heart when making their choice between the two hospitals.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Condition 1: Combined only | No Intervention | Participants randomized to baseline (control) arm Condition 1 will view only combined transplant survival outcome information (e.g. transplant survival rate not stratified by number and quality of donor hearts accepted at each center) when making a choice between the two hospitals. | |
| Combined 2: Stratified only | Experimental | Participants randomized to Condition 2 will view only stratified transplant survival outcome information when making a choice between the two hospitals. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Stratified Transplant Survival | Other | The transplant survival rate in the table of outcome statistics is stratified into two groups: (i) patients who received excellent donor organs and (ii) patients who received less than optimal donor organs. Stratified transplant survival is computed from survival rates of transplant patients who received each quality category of organ. excellent transplant survival = [number of patients surviving after transplant with excellent organ]/[number of patients for whom excellent organ was accepted for transplant] marginal transplant survival = [number of patients surviving after transplant with marginal organ]/[number of patients for whom marginal organ was accepted for transplant] |
| Measure | Description | Time Frame |
|---|---|---|
| Hospital Choice | The outcome variable will be a measure of binary choice between two hospitals: one with a selective donor-heart acceptance strategy and one with a non-selective donor heart acceptance strategy. Participants will respond to the question "Which Hospital is a better choice for patients? Please click on one of the two tables below to indicate which hospital is the better choice." Participants will choose been two outcome tables featuring the selective and non-selective hospital (counterbalanced, such that each of the two choices is equally likely to be presented at top of the choice scenario in each condition). The number of participants that choose each hospital will be the measured outcome variable used in analyses. | 1 day |
| Measure | Description | Time Frame |
|---|---|---|
| Mediator of Hospital Choice | Participants were asked, "There are many reasons why one transplant hospital might outperform another. Which reasons were most important in your decision? Please move the slider to indicate how much you considered each of the reasons below (0=reason was not important, 100=reason was extremely important). Patients were more likely to receive any type of donor heart at the hospital I picked." The reported data show the mean rating on a 0 to 100 scale |
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Inclusion Criteria:
Participants will be asked to participate if they confirm the following inclusion criteria in the consent form.
Exclusion Criteria:
1. participants who do not meet primary criterion of being clinical transplant personnel.
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| Name | Affiliation | Role |
|---|---|---|
| Alison E Butler, BS | Carnegie Mellon University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Carnegie Mellon University | Pittsburgh | Pennsylvania | 15213 | United States |
The PI will make all of the raw IPD files - together with statistical analysis protocol descriptions and information for proper analysis available for download a minimum of 1 year, and a maximum of 3 years, after publication of the corresponding manuscripts. All human subjects data are anonymized immediately when they are initially written from the online survey platform to the server, and thus participant confidentiality will not be compromised by this plan for data sharing.
All hypotheses, methods, and planned analyses for the applicant's studies will be pre-registered on ClinicalTrials.gov and Open Science Framework.
All of the raw files, statistical analysis protocol descriptions, and information for proper analysis will be available for download a minimum of 1 year, and a maximum of 3 years, after publication of the corresponding manuscripts.
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| ID | Title | Description |
|---|---|---|
| FG000 | Condition 1: Combined Only | Participants randomized to baseline (control) arm Condition 1 will view only combined transplant survival outcome information (e.g. transplant survival rate not stratified by number and quality of donor hearts accepted at each center) when making a choice between the two hospitals. |
| FG001 | Combined 2: Stratified Only | Participants randomized to Condition 2 will view only stratified transplant survival outcome information when making a choice between the two hospitals. Stratified Transplant Survival: The transplant survival rate in the table of outcome statistics is stratified into two groups: (i) patients who received excellent donor organs and (ii) patients who received less than optimal donor organs. Stratified transplant survival is computed from survival rates of transplant patients who received each quality category of organ. excellent transplant survival = [number of patients surviving after transplant with excellent organ]/[number of patients for whom excellent organ was accepted for transplant] marginal transplant survival = [number of patients surviving after transplant with marginal organ]/[number of patients for whom marginal organ was accepted for transplant] |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
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| ID | Title | Description |
|---|---|---|
| BG000 | Condition 1: Combined Only | Participants randomized to baseline (control) arm Condition 1 will view only combined transplant survival outcome information (e.g. transplant survival rate not stratified by number and quality of donor hearts accepted at each center) when making a choice between the two hospitals. |
| BG001 |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Hospital Choice | The outcome variable will be a measure of binary choice between two hospitals: one with a selective donor-heart acceptance strategy and one with a non-selective donor heart acceptance strategy. Participants will respond to the question "Which Hospital is a better choice for patients? Please click on one of the two tables below to indicate which hospital is the better choice." Participants will choose been two outcome tables featuring the selective and non-selective hospital (counterbalanced, such that each of the two choices is equally likely to be presented at top of the choice scenario in each condition). The number of participants that choose each hospital will be the measured outcome variable used in analyses. | Posted | Count of Participants | Participants | 1 day |
|
3 months
No adverse events in this benign behavioral intervention.
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Condition 1: Combined Only | Participants randomized to baseline (control) arm Condition 1 will view only combined transplant survival outcome information (e.g. transplant survival rate not stratified by number and quality of donor hearts accepted at each center) when making a choice between the two hospitals. |
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Did not recruit as many participants as desired by power analysis.
| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Gretchen Chapman | Carnegie Mellon University | 412-268-3665 | gchapman@andrew.cmu.edu |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Jan 10, 2024 | Mar 21, 2024 | Prot_SAP_000.pdf |
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| 1 day |
| Combined 2: Stratified Only |
Participants randomized to Condition 2 will view only stratified transplant survival outcome information when making a choice between the two hospitals. Stratified Transplant Survival: The transplant survival rate in the table of outcome statistics is stratified into two groups: (i) patients who received excellent donor organs and (ii) patients who received less than optimal donor organs. Stratified transplant survival is computed from survival rates of transplant patients who received each quality category of organ. excellent transplant survival = [number of patients surviving after transplant with excellent organ]/[number of patients for whom excellent organ was accepted for transplant] marginal transplant survival = [number of patients surviving after transplant with marginal organ]/[number of patients for whom marginal organ was accepted for transplant] |
| BG002 | Total | Total of all reporting groups |
| Participants |
|
| Age, Continuous | Measure in row does not differ | Median | Full Range | years |
|
| Sex: Female, Male | Count of Participants | Participants |
|
| Race (NIH/OMB) | Count of Participants | Participants |
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| Region of Enrollment | Count of Participants | Participants |
|
| OG001 | Combined 2: Stratified Only | Participants randomized to Condition 2 will view only stratified transplant survival outcome information when making a choice between the two hospitals. Stratified Transplant Survival: The transplant survival rate in the table of outcome statistics is stratified into two groups: (i) patients who received excellent donor organs and (ii) patients who received less than optimal donor organs. Stratified transplant survival is computed from survival rates of transplant patients who received each quality category of organ. excellent transplant survival = [number of patients surviving after transplant with excellent organ]/[number of patients for whom excellent organ was accepted for transplant] marginal transplant survival = [number of patients surviving after transplant with marginal organ]/[number of patients for whom marginal organ was accepted for transplant] |
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| Secondary | Mediator of Hospital Choice | Participants were asked, "There are many reasons why one transplant hospital might outperform another. Which reasons were most important in your decision? Please move the slider to indicate how much you considered each of the reasons below (0=reason was not important, 100=reason was extremely important). Patients were more likely to receive any type of donor heart at the hospital I picked." The reported data show the mean rating on a 0 to 100 scale | Posted | Mean | Standard Deviation | score on a scale | 1 day |
|
|
|
| 0 |
| 34 |
| 0 |
| 38 |
| 0 |
| 38 |
| EG001 | Combined 2: Stratified Only | Participants randomized to Condition 2 will view only stratified transplant survival outcome information when making a choice between the two hospitals. Stratified Transplant Survival: The transplant survival rate in the table of outcome statistics is stratified into two groups: (i) patients who received excellent donor organs and (ii) patients who received less than optimal donor organs. Stratified transplant survival is computed from survival rates of transplant patients who received each quality category of organ. excellent transplant survival = [number of patients surviving after transplant with excellent organ]/[number of patients for whom excellent organ was accepted for transplant] marginal transplant survival = [number of patients surviving after transplant with marginal organ]/[number of patients for whom marginal organ was accepted for transplant] | 0 | 38 | 0 | 34 | 0 | 34 |
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