Efficacy of Portion Size Measurement Aids

NCT ID: NCT01262768

Last Updated: 2014-02-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

36 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-04-30

Study Completion Date

2014-01-31

Brief Summary

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Portion size measurement aids (PSMAs) are tools that facilitate the estimation of food servings. The objectives of this study are to determine (a) if food portion size estimation accuracy differs when using a two dimensional (2D) PSMA (actual-size photos called Portion Size Cards) compared to a 3D PSMA (Portion Size Kit) and (b) whether differences exist in the short-term usefulness of and satisfaction with these PSMAs in a sample of parents of overweight children and youth. We hypothesize that the group that receives the 3D PSMAs will be more accurate in food portion size estimation and will be more satisfied with the tool compared to the group that receives the 2D PSMAs.

Detailed Description

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Forty primary caregivers of overweight children and youth attending the Pediatric Centre for Weight and Health (Edmonton, AB) will be recruited. Participants will be randomly assigned to one of the two groups (2D PSMAs versus 3D PSMAs). After a brief explanation of the respective tool, participants will estimate the volumes of pre-measured rubber food portion models on a test plate. Participants will then be given the 2D or 3D PSMAs to take home with them to use in the real-world. After 2-4 weeks, participants will be telephoned by the research team to complete a brief survey to evaluate their usefulness of and satisfaction with the 2D or 3D PSMAs at home.

Conditions

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Nutrition Assessment Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Investigators Outcome Assessors

Study Groups

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2D Portion Size Measurment Aids (PSMAs)

The 2D PSMAs are life-size photographs of the 3D PSMAs.

Group Type EXPERIMENTAL

Portion Size Measurement Aids (PSMAs)

Intervention Type BEHAVIORAL

Subjects are randomly assigned to receive either 2D or 3D PSMAs to examine accuracy, acceptability and usefulness of the models. Both groups receive brief instructions on the use of the respective PSMAs, complete an accuracy estimation task, and are given the 2D or 3D PSMAs to take home with them to use for 2-4 weeks, after which the researchers telephone parents to complete a brief satisfaction and usefulness survey.

3D Portion Size Measurement Aids (PSMAs)

The 3D PSMAs include foam rubber replicas of a golf ball, a hockey puck, a tennis ball and a baseball.

Group Type EXPERIMENTAL

Portion Size Measurement Aids (PSMAs)

Intervention Type BEHAVIORAL

Subjects are randomly assigned to receive either 2D or 3D PSMAs to examine accuracy, acceptability and usefulness of the models. Both groups receive brief instructions on the use of the respective PSMAs, complete an accuracy estimation task, and are given the 2D or 3D PSMAs to take home with them to use for 2-4 weeks, after which the researchers telephone parents to complete a brief satisfaction and usefulness survey.

Interventions

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Portion Size Measurement Aids (PSMAs)

Subjects are randomly assigned to receive either 2D or 3D PSMAs to examine accuracy, acceptability and usefulness of the models. Both groups receive brief instructions on the use of the respective PSMAs, complete an accuracy estimation task, and are given the 2D or 3D PSMAs to take home with them to use for 2-4 weeks, after which the researchers telephone parents to complete a brief satisfaction and usefulness survey.

Intervention Type BEHAVIORAL

Other Intervention Names

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2D Portion Size Measurement Aids (PSMAs) 3D Portion Size Measurement Aids (PSMAs)

Eligibility Criteria

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Inclusion Criteria

* Participants must be primary caregivers of children or youth attending a clinical appointment for weight management (clients must have a BMI greater or equal to the 85th percentile at this clinic)
* Participants must be literate and fluent in English

Exclusion Criteria

* Any participant who does not meet the above criteria
* Participants must not have had any previous education or resources on food portion sizes at this clinic
Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Alberta

OTHER

Sponsor Role lead

Responsible Party

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Geoff Ball

Associate Professor, Dept Pediatrics and Director, Pediatric Centre for Weight and Health

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Geoff DC Ball, PhD, RD

Role: PRINCIPAL_INVESTIGATOR

Department of Pediatrics, University of Alberta; Director, Pediatric Centre for Weight and Health

Locations

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Pediatric Centre for Weight and Health- Edmonton General Continuing Care Centre

Edmonton, Alberta, Canada

Site Status

Countries

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Canada

Other Identifiers

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00010835

Identifier Type: -

Identifier Source: org_study_id

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