Clinical trials data
Stroop Color-Word Test in cardiovascular trials: 81 registered studies
Every registered cardiovascular disease study on ClinicalTrials.gov that names the Stroop Color-Word Test in an outcome measure: how often it is a primary outcome, the tests named with it, how large the studies are and when they measure it.
- Registered cardiovascular disease studies name it in an outcome measure
- 81
- Name it in a primary outcome, 30%
- 24 of 81
Tests named in the same studies
- 1
Trail Making Test29 studies, 10 as a primary outcome
- 2
Digit Span Test18 studies, 6 as a primary outcome
- 3
Verbal Learning18 studies, 6 as a primary outcome
- 4
Verbal Fluency16 studies, 5 as a primary outcome
- 5
Symbol Coding10 studies, 5 as a primary outcome
- 6
Category Fluency5 studies, 4 as a primary outcome
- 7
Pattern and Letter Comparison4 studies, 3 as a primary outcome
- 8
Finger Tapping Task4 studies, 2 as a primary outcome
- 9
Picture Naming Test4 studies, 1 as a primary outcome
- 10
N-Back Task4 studies, 0 as a primary outcome
A test as a primary outcomeOnly in secondary or other outcomes
Studies by start year
A test as a primary outcomeOnly in secondary or other outcomes
Show as a table
| Start year | Studies | A test as a primary outcome |
|---|---|---|
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 3 | 1 |
| 2014 | 2 | 0 |
| 2015 | 7 | 2 |
| 2016 | 8 | 4 |
| 2017 | 6 | 0 |
| 2018 | 1 | 0 |
| 2019 | 2 | 0 |
| 2020 | 3 | 2 |
| 2021 | 8 | 3 |
| 2022 | 8 | 3 |
| 2023 | 10 | 2 |
| 2024 | 11 | 3 |
| 2025 | 2 | 0 |
| 2026 | 5 | 3 |
Phases and study sizes
By phase
- Early phase 12 studies, 1 as a primary outcome
- Phase 23 studies, 0 as a primary outcome
- Phase 2/31 studies, 0 as a primary outcome
- Phase 32 studies, 1 as a primary outcome
- Phase 44 studies, 0 as a primary outcome
- Not applicable60 studies, 20 as a primary outcome
- Observational9 studies, 2 as a primary outcome
Participants per study
- Not applicable54 median, 33 to 116
Show as a table
| Phase | Studies with a size | Median | Middle half |
|---|---|---|---|
| Not applicable | 60 | 54 | 33 to 116 |
When cardiovascular trials measure it
Latest time point of each outcome
- Within a day9 outcomes, 4 as a primary outcome
- Up to 4 weeks7 outcomes, 0 as a primary outcome
- 1 to 3 months21 outcomes, 5 as a primary outcome
- 3 to 6 months20 outcomes, 6 as a primary outcome
- 6 to 12 months11 outcomes, 3 as a primary outcome
- 1 to 2 years3 outcomes, 2 as a primary outcome
- Over 2 years4 outcomes, 0 as a primary outcome
- No duration given6 outcomes, 4 as a primary outcome
A test as a primary outcomeOnly in secondary or other outcomes
75 of the 81 outcome measures give a duration. A single visit counts as within a day.
Status, results, interventions and countries
Status
- Recruiting16 studies, 6 as a primary outcome
- Active, not recruiting7 studies, 2 as a primary outcome
- Completed41 studies, 11 as a primary outcome
- Stopped early3 studies, 1 as a primary outcome
- Status unknown14 studies, 4 as a primary outcome
What they test
- Behavioral20 studies, 8 as a primary outcome
- Drug13 studies, 1 as a primary outcome
- Device3 studies, 0 as a primary outcome
- Dietary supplement10 studies, 3 as a primary outcome
- Procedure10 studies, 2 as a primary outcome
- Biological1 studies, 0 as a primary outcome
- Other29 studies, 10 as a primary outcome
- None given4 studies, 1 as a primary outcome
Intervention types as registered. A study can list several; observational studies often list none.
Where their sites are
- United States22 studies, 9 as a primary outcome
- Canada11 studies, 2 as a primary outcome
- Brazil10 studies, 1 as a primary outcome
- China5 studies, 2 as a primary outcome
- Spain4 studies, 1 as a primary outcome
- France3 studies, 0 as a primary outcome
- Switzerland3 studies, 1 as a primary outcome
- United Kingdom3 studies, 1 as a primary outcome
- Australia2 studies, 0 as a primary outcome
- Italy2 studies, 2 as a primary outcome
- Türkiye2 studies, 1 as a primary outcome
- Belgium1 studies, 1 as a primary outcome
20 countries in all. A study with sites in several counts in each; 5 list no site.
Reported results
Completed studies with results posted on ClinicalTrials.gov, a results paper the registry links to the study, or both.
Completed cardiovascular disease studies that name the Stroop Color-Word Test: 15 of 41, 37%
Every completed study with a cognitive outcome: 3,626 of 7,953, 46%
| Results | Completed cardiovascular disease studies that name the Stroop Color-Word Test | Every completed study |
|---|---|---|
| Results on ClinicalTrials.gov and a paper | 2, 5% | 776, 10% |
| Results on ClinicalTrials.gov only | 5, 12% | 1,139, 14% |
| A results paper only | 8, 20% | 1,711, 22% |
| Neither | 26, 63% | 4,327, 54% |
The 81 studies
81 studies match. 24 name the Stroop Color-Word Test in a primary outcome. Median size 54 participants. Median time to the primary outcome: 16 weeks.
Loading 81 studies; the filters turn on when they arrive.
2026 is partly planned starts.
Show as a table
| Start year | Studies | As a primary outcome |
|---|---|---|
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 3 | 1 |
| 2014 | 2 | 0 |
| 2015 | 7 | 2 |
| 2016 | 8 | 4 |
| 2017 | 6 | 0 |
| 2018 | 1 | 0 |
| 2019 | 2 | 0 |
| 2020 | 3 | 2 |
| 2021 | 8 | 3 |
| 2022 | 8 | 3 |
| 2023 | 10 | 2 |
| 2024 | 11 | 3 |
| 2025 | 2 | 0 |
| 2026 | 5 | 3 |
Library tests named most
Largest condition groups
Phases
Participants
Lead sponsor: industry 1, other 80. Interventional 72, observational 9.
As a primary outcomeSecondary or other outcomeThe Stroop Color-Word Test
The studies, newest registration first
Each number opens the study's record on ClinicalTrials.gov.
| Study | Start | Phase | Conditions | Participants | Lead sponsor | Status | Library tests named, with the latest time point |
|---|---|---|---|---|---|---|---|
| NCT07740967 | Start2026 | PhaseNot applicable | ConditionsSleep and sleep disorders, Pain and fatigue, Cardiovascular disease | Participants34 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT07729930 | Start2026 | PhaseNot applicable | ConditionsSleep and sleep disorders, Pain and fatigue, Cardiovascular disease | Participants38 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT07666685 | Start2026 | PhaseNot applicable | ConditionsAging, frailty and exercise, Cardiovascular disease | Participants120 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT07648498 | Start2026 | PhaseNot applicable | ConditionsCardiovascular disease | Participants30 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT07581587 | Start2026 | PhaseNot applicable | ConditionsCardiovascular disease | Participants54 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT07396025 | Start2025 | PhaseNot applicable | ConditionsStroke, Cardiovascular disease | Participants60 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT07200661 | Start2024 | PhaseNot applicable | ConditionsStroke, Cardiovascular disease | Participants30 | Lead sponsorOther | StatusCompleted | Library tests named
|
| NCT07125313 | Start2025 | PhaseNot applicable | ConditionsCardiovascular disease | Participants70 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT06890962 | Start2023 | PhaseNot applicable | ConditionsCardiovascular disease | Participants34 | Lead sponsorOther | StatusCompleted | Library tests named
|
| NCT06788275 | Start2024 | PhaseNot applicable | ConditionsCardiovascular disease | Participants132 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT06602596 | Start2024 | PhaseNot applicable | ConditionsCardiovascular disease | Participants80 | Lead sponsorOther | StatusCompleted | Library tests named
|
| NCT06585904 | Start2024 | PhaseNot applicable | ConditionsCardiovascular disease | Participants48 | Lead sponsorOther | StatusActive, not recruiting | Library tests named
|
| NCT06584331 | Start2024 | PhaseNot applicable | ConditionsCardiovascular disease | Participants48 | Lead sponsorOther | StatusActive, not recruiting | Library tests named
|
| NCT06533982 | Start2023 | PhaseNot applicable | ConditionsCardiovascular disease | Participants30 | Lead sponsorOther | StatusCompleted | Library tests named
|
| NCT06529055 | Start2024 | PhaseNot applicable | ConditionsPain and fatigue, Cardiovascular disease | Participants20 | Lead sponsorOther | StatusStatus unknown | Library tests named
|
| NCT06469515 | Start2024 | PhaseObservational | ConditionsDelirium, surgery and intensive care, Cardiovascular disease | Participants220 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT06463496 | Start2024 | PhaseObservational | ConditionsCardiovascular disease | Participants60 | Lead sponsorOther | StatusActive, not recruiting | Library tests named
|
| NCT06336174 | Start2022 | PhaseObservational | ConditionsStroke, Cardiovascular disease | Participants100 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT06307483 | Start2023 | PhaseObservational | ConditionsSleep and sleep disorders, Cardiovascular disease | Participants499 | Lead sponsorOther | StatusCompleted | Library tests named
|
| NCT06287580 | Start2024 | PhaseEarly phase 1 | ConditionsAging, frailty and exercise, Cardiovascular disease | Participants27 | Lead sponsorOther | StatusCompleted | Library tests named
|
| NCT06242535 | Start2023 | PhaseEarly phase 1 | ConditionsDepression and bipolar disorder, Aging, frailty and exercise, Obesity and diabetes, Cardiovascular disease | Participants13 | Lead sponsorIndustry | StatusCompleted | Library tests named
|
| NCT06152614 | Start2023 | PhaseNot applicable | ConditionsAging, frailty and exercise, Cardiovascular disease | Participants128 | Lead sponsorOther | StatusRecruiting | Library tests named
|
| NCT06130358 | Start2024 | PhaseNot applicable | ConditionsAging, frailty and exercise, Cardiovascular disease | Participants40 | Lead sponsorOther | StatusStatus unknown | Library tests named
|
| NCT06076629 | Start2023 | PhaseNot applicable | ConditionsCardiovascular disease | Participants50 | Lead sponsorOther | StatusActive, not recruiting | Library tests named
|
| NCT05980195 | Start2024 | PhaseNot applicable | ConditionsCardiovascular disease | Participants90 | Lead sponsorOther | StatusStatus unknown | Library tests named
|
Questions, answered from the data
How many cardiovascular trials use the Stroop Color-Word Test?
81 registered cardiovascular disease studies on ClinicalTrials.gov name it in an outcome measure, 24 of them in a primary outcome: 12% of the condition's 682 studies with a cognitive outcome, against 12% of all of them. It is the 2nd most named test in cardiovascular trials.
Which tests do cardiovascular trials use with the Stroop Color-Word Test?
The Trail Making Test (29 studies), the Digit Span Test (18 studies) and Verbal Learning (18 studies).
When do cardiovascular trials measure the Stroop Color-Word Test?
Half of the primary outcomes that name the Stroop Color-Word Test are measured within 16 weeks of the start, and the middle half from 8 weeks to 6 months. 20 primary outcomes give a duration.
How many completed cardiovascular trials that use the Stroop Color-Word Test have reported results?
15 of the 41 completed studies that name it, 37%, have reported results: 7 posted them on ClinicalTrials.gov, 10 have a results paper linked to the registry record, and 2 did both. The other 26 show neither. Of all completed studies with a cognitive outcome, 46% have reported results.
How the studies are counted
For each test family, the census runs ClinicalTrials.gov's own outcome search for the family's names and reads every study first posted by the day the family was counted. These studies were read on 10 November 2026. A study counts once on a page, however many tests it names. Counts for a test cover every version of the task under any of its names, so a page can count studies that used a commercial version.
The census adds two things to each record and changes nothing in it: which outcome list names the test (primary, then secondary, then other), and the condition groups, matched on the study's condition names and MeSH terms. A study can fall in several groups; one whose only condition is cognitive impairment or decline falls in “Cognitive impairment and decline”. Studies that name only instruments outside the library count in every total and share but are not listed.
A second read on 10 November 2026 added each study's overall status, whether results are posted, its intervention types, the countries of its sites and the time frame of the outcome that names each test. A time frame counts by the latest time point it names: “Baseline, 12 and 24 weeks” is 24 weeks, a single visit is within a day, and one that names no duration, such as “end of treatment”, is left out of the timings.
A third read on 10 November 2026 added the papers the registry links to each study: those its sponsor lists as reporting results, and those PubMed links to it through the study's NCT number. A study has a results paper when one of them came out in or after the month of its primary completion and PubMed does not class it as a protocol, review or comment. A paper that never gives the NCT number is not linked, so some studies counted as reporting neither did publish.
Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine, which does not endorse these pages. Every study line is in the data release 2.1.0, and the explorer's own file is clinical-trials-studies.json.
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