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NCT01775826 · ClinicalTrials.gov registry record · NA
Validating Machine -Learned Classifiers of Sedentary Behavior and Physical Activity
A NA study, sponsored by University of California, San Diego.
- Completed
- Registry status
- NA
- Development phase
- 225
- Enrollment target
NCT01775826: Completed NA study, sponsored by University of California, San Diego.
NCT01775826 is a NA study that has completed, run by University of California, San Diego. The registered enrollment target is 225 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (84% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01775826, a NA study, has completed, sponsored by University of California, San Diego.
- COMPLETED
- Registry status
- NA
- Development phase
- 225 participants
- Enrollment target
Study Summary
The majority of the US population spends most of the day sitting and the we have new scientific evidence that this can contribute to poor health regardless of how much physical activity a person does. However, we do not measure sitting time very accurately and when we ask people to tell us how much they do, their answers are unreliable. Our study will use small sensors to objectively measure when people sit or do physical activity, and we will use sophisticated computational techniques to summarize these movement patterns.
Primary Outcome
Using an annotated data set of SenseCam images in three free-living population subgroups, we will compare sensitivity, specificity and percent agreement between behavioral classifiers derived from: (a) single axis vs. multi axis accelerometers; (b) aggregated movement counts vs. raw acceleration data; (c) hip vs. wrist mounted accelerometers. Determine (a) the extent to which adding GPS data improves discrimination accuracy over accelerometer only behavior classification (i.e., best classifier
Interventions
- OTHER Measurement
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 225 participants |
| Start Date | 2013-03 |
| Est. Completion | 2016-04 |
| Phase | NA |
What the finished NCT01775826 record still lists
NCT01775826 is an interventional study that assigns participants to a tested intervention. The registered 225 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (84% lower).
The record links to 0 conditions, and to 1 intervention - of which Measurement is the first listed.
NCT01775826 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT01775826 about?
NCT01775826 is a clinical study titled "Validating Machine -Learned Classifiers of Sedentary Behavior and Physical Activity". The majority of the US population spends most of the day sitting and the we have new scientific evidence that this can contribute to poor health regardless of how much physical activity a person does. However, we do not measure sitting time very accurately and when we ask people to tell us how much ...
What is the current status of trial NCT01775826?
This trial is currently completed. It is a NA study. The enrollment target is 225 participants. The study started on 2013-03. Estimated completion is 2016-04.
What interventions are being tested in trial NCT01775826?
The interventions under investigation include: Measurement (OTHER).
Who is sponsoring clinical trial NCT01775826?
This trial is sponsored by University of California, San Diego, which has 775 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT01775826's enrollment target sits among peer trials
225 472nd of 2000 higher than 1,523 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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