Trial Outcomes & Findings for Psychological Mechanisms Linking Food Insecurity and Obesity (NCT NCT03441594)
NCT ID: NCT03441594
Last Updated: 2020-02-05
Results Overview
Assessed via the 27-Item Monetary Choice Questionnaire, which measures bias toward smaller, immediate rewards versus larger, delayed rewards. This questionnaire presents participants with a set of 27 choices between smaller, immediate monetary rewards and larger, delayed monetary rewards. Participants who discount the value of the delayed rewards more steeply are considered to be more impulsive. An estimate of a participant's discounting rate (k) is calculated from the pattern of choices. Values of k range from 0.00016 (ln transformation -8.74) to 0.25 (ln transformation -1.39), with higher values indicating a greater preference for smaller, immediate rewards over larger, delayed rewards. K tends to be skewed, so a natural log (ln) transformation is utilized to approximate a normal distribution for statistical analyses.
COMPLETED
56 participants
Through study completion, an average of 1 hour and 30 minutes at Study Visit 1
2020-02-05
Participant Flow
Participant milestones
| Measure |
Single Group
The study sample included a single group of 56 food secure and food insecure women and men aged 18 to 49 years with a BMI of 20.0 kg/m2 or greater.
|
|---|---|
|
Overall Study
STARTED
|
56
|
|
Overall Study
COMPLETED
|
56
|
|
Overall Study
NOT COMPLETED
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Psychological Mechanisms Linking Food Insecurity and Obesity
Baseline characteristics by cohort
| Measure |
Single Group
n=56 Participants
The study sample included a single group of 56 food secure and food insecure women and men aged 18 to 49 years with a BMI of 20.0 kg/m2 or greater.
|
|---|---|
|
Age, Continuous
|
32.25 years
STANDARD_DEVIATION 9.18 • n=5 Participants
|
|
Sex: Female, Male
Female
|
37 Participants
n=5 Participants
|
|
Sex: Female, Male
Male
|
19 Participants
n=5 Participants
|
|
Race/Ethnicity, Customized
African American
|
27 Participants
n=5 Participants
|
|
Race/Ethnicity, Customized
Caucasian or Asian American
|
29 Participants
n=5 Participants
|
|
Region of Enrollment
United States
|
56 participants
n=5 Participants
|
PRIMARY outcome
Timeframe: Through study completion, an average of 1 hour and 30 minutes at Study Visit 1Assessed via the 27-Item Monetary Choice Questionnaire, which measures bias toward smaller, immediate rewards versus larger, delayed rewards. This questionnaire presents participants with a set of 27 choices between smaller, immediate monetary rewards and larger, delayed monetary rewards. Participants who discount the value of the delayed rewards more steeply are considered to be more impulsive. An estimate of a participant's discounting rate (k) is calculated from the pattern of choices. Values of k range from 0.00016 (ln transformation -8.74) to 0.25 (ln transformation -1.39), with higher values indicating a greater preference for smaller, immediate rewards over larger, delayed rewards. K tends to be skewed, so a natural log (ln) transformation is utilized to approximate a normal distribution for statistical analyses.
Outcome measures
| Measure |
Single Group
n=56 Participants
The study sample included a single group of 56 food secure and food insecure women and men aged 18 to 49 years with a BMI of 20.0 kg/m2 or greater.
|
|---|---|
|
Delay Discounting
|
-4.84 score on a scale (natural log)
Standard Deviation 2.07
|
SECONDARY outcome
Timeframe: Through study completion, an average of 1 hour and 30 minutes at Study Visit 1Assessed using the 8-item Short Grit Scale, which measures trait-level perseverance and passion for long-term goals. Scores range from 1 (not at all gritty) to 5 (extremely gritty).
Outcome measures
| Measure |
Single Group
n=56 Participants
The study sample included a single group of 56 food secure and food insecure women and men aged 18 to 49 years with a BMI of 20.0 kg/m2 or greater.
|
|---|---|
|
Grit
|
3.68 score on a scale
Standard Deviation 0.63
|
Adverse Events
Single Group
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place