Cognitive Impairment, Obesity, and the Effects of Bariatric Surgery
NCT05215886, Enrolling by invitation, University of California, Davis
Trial 9
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
| Field | Value | Source |
|---|---|---|
| Title | Cognitive Impairment, Obesity, and the Effects of Bariatric Surgery | ClinicalTrials.gov |
| NCT number | NCT05215886 | ClinicalTrials.gov |
| Status | Enrolling by invitation | ClinicalTrials.gov |
| Enrollment | 9,500 participants, estimated | ClinicalTrials.gov |
| Lead sponsor | University of California, Davis | ClinicalTrials.gov |
| Conditions | Obesity, Morbid, Bariatric Surgery Candidate | ClinicalTrials.gov |
| Interventions | Surgery | ClinicalTrials.gov |
| First posted | 2022-01-31 | ClinicalTrials.gov |
| Last updated | 2025-12-05 | ClinicalTrials.gov |
Registered outcomes 11
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description | Source |
|---|---|---|---|---|
| Primary | California Verbal Learning Test-3rd Edition (CVLT-3) | Pre-operatively | Measures episodic verbal learning including Verbal Learning, immediate memory, and delayed memory | ClinicalTrials.gov |
| Primary | California Verbal Learning Test-3rd Edition (CVLT-3) | 12 Months after index screening/date of surgery | Measures episodic verbal learning including Verbal Learning, immediate memory, and delayed memory | ClinicalTrials.gov |
| Secondary | Brief Visuospatial Memory Test | Pre-operatively and 12 months after index screening/date of surgery | Measures visuospatial learning and memory, including visual learning, immediate memory, and delayed memory. | ClinicalTrials.gov |
| Secondary | Brief Visuospatial Memory Test | Pre-operatively | Measures visuospatial learning and memory, including visual learning, immediate memory, and delayed memory. | ClinicalTrials.gov |
| Secondary | Trial Making Test, A & B | 12 months after index screening/date of surgery | Measures visual spatial attention, motor speed and cognitive flexibility | ClinicalTrials.gov |
| Secondary | WAIS-IV Digit Span Forward & Backward | Pre-Operatively | Measures auditory Attention (Forward), and Auditory attention and working memory (Backward) | ClinicalTrials.gov |
| Secondary | WAIS-IV Digit Span Forward & Backward | 12 months after Index screening/date of surgery | Measures auditory Attention (Forward), and Auditory attention and working memory (Backward) | ClinicalTrials.gov |
| Secondary | Verbal Fluency, Phonemic & Semantic | Pre-operatively | Measures verbal fluency by a word generation task based on letter \& category (executive functioning) | ClinicalTrials.gov |
| Secondary | Verbal Fluency, Phonemic & Semantic | 12 months after index screening/date of surgery | Measures verbal fluency by a word generation task based on letter \& category (executive functioning) | ClinicalTrials.gov |
| Secondary | Stroop Color and Word Test; Word, Color & Word-Color | Pre-Operatively | Measures reading speed (word), naming speed (processing) and selective attention and inhibition (attention/executive functioning) | ClinicalTrials.gov |
| Secondary | Stroop Color and Word Test; Word, Color & Word-Color | 12 months after index screening/date of surgery | Measures reading speed (word), naming speed (processing) and selective attention and inhibition (attention/executive functioning) | ClinicalTrials.gov |
Outcomes 0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
| Type | Outcome | Time frame | Population | Units | Measured as | Source |
|---|
Results by group 0
Each measurement the trial posted, group by group, in the words and numbers it posted.
| Outcome | Group | Category | Value | Spread | Units | Source |
|---|
Participant flow 0
How many started, completed or left each group, period by period.
| Period | Milestone | Group | Participants | Units counted | Source |
|---|
Adverse events 0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
| Type | Event | Organ system | Group | Affected | At risk | Events | Source |
|---|
Adverse event totals 0
The totals the trial posted for each group.
| Total | Group | Affected | At risk | Source |
|---|
Papers 4
The papers the trial lists on ClinicalTrials.gov.
Grants 0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
| Project | Title | Principal investigators | Organization | Funder | Fiscal years | Source |
|---|
Trial comparisons 0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
| Comparison | Source |
|---|
Tests 4
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
| Test | Named as | Source |
|---|---|---|
| Verbal Learning | Primary outcome | ConductCognition |
| Digit Span Test | Secondary outcome | ConductCognition |
| Stroop Color-Word Test | Secondary outcome | ConductCognition |
| Verbal Fluency | Secondary outcome | ConductCognition |
Source 5
| Field | Value | Source |
|---|---|---|
| Release | trials-2026-11-12-0.4.0 | ClinicalTrials.gov |
| Release manifest SHA-256 | 0f4a8d8c48aee2a7573ae0fa94ecbeab70c1adbe449bbc95c424bc7d3e97b9d4 | ClinicalTrials.gov |
| Registry capture | 2026-11-12 | ClinicalTrials.gov |
| Results copy, AACT | 2026-03-23 | ClinicalTrials.gov |
| NIH clinical studies file | 2026-11-13 | ClinicalTrials.gov |
Release trials-2026-11-12-0.4.0
ClinicalTrials.gov's posted results, through CTTI's AACT: ClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299 ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
ClinicalTrials.gov: none stated ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
NIH RePORTER's clinical studies and project files: Public domain (NIH RePORTER)