Increasing Household Purchase and Child Consumption of Calcium Products
2018년 5월 3일 업데이트: Mary Jung, University of British Columbia
Increasing Household Purchase and Child Consumption of Calcium Products: A Randomised Controlled Trial
The objective of this research is to test the effectiveness of persuasive messages targeted at parents who have children who consume inadequate amounts of calcium. Specifically, the effectiveness of the intervention material on increase a) the purchase of calcium-rich products by parents, and b) the consumption of calcium-rich products in the parent and child will be examined in 400 families across Canada. Families will receive either the targeted intervention materials or standard of care generic nutrition materials retrieved from Health Canada's website. Materials will be delivered to parents during weeks 0, 8, 16, and 22 of the study. Monitoring of parents' calcium product purchases and consumption behaviour in both parents and children will occur at week 0,12, 24 weeks (immediately post-intervention) and at 52 weeks (i.e., 6-month follow-up). Purchases will be verified by grocery receipts made during the aforementioned weeks. Parents will self-report on their dietary consumption as well as their child's using a food frequency questionnaire. The study hypotheses are as follows:
- Parents in the experimental condition will purchase more calcium-rich products as compared to parents in the control condition.
- Parents and children in the experimental condition will consume more calcium rich products as compared to parents and children in the control condition.
- Perceived outcome expectancies of consuming calcium-rich products will increase to a greater extent in parents in the experimental condition as compared to parents in the control condition.
- Self-regulatory efficacy to consume calcium-rich products will increase to a greater extent in parents in the experimental condition as compared to parents in the control condition.
- Perceived social support and role modelling behaviour will be highest in parents in the experimental condition as compared to parents in the control condition.
- Self-regulatory efficacy and outcome expectancies will mediate the changes in calcium-rich product purchases and consumption.
연구 개요
상태
완전한
정황
연구 유형
중재적
등록 (실제)
189
단계
- 해당 없음
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 장소
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British Columbia
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Kelowna, British Columbia, 캐나다, V1V 1V7
- Health and Exercise Psychology Laboratory
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참여기준
연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.
자격 기준
공부할 수 있는 나이
- 어린이
- 성인
- 고령자
건강한 자원 봉사자를 받아들입니다
예
연구 대상 성별
모두
설명
Inclusion Criteria:
- Parent of a child between the ages of 4 and 10
- The child consumes less than the recommended daily intake of calcium (1300mg for youth aged 9-10 and 1000mg for children aged 4-8)
- Parent and child have no dietary restrictions, allergies, or medical reasons for limiting intake of dairy products
- Parent can read and speak English
Exclusion Criteria:
- Dietary restrictions, allergies, or medical reasons for limiting intake of dairy products
공부 계획
이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 지지 요법
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 하나의
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
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실험적: Experimental
The experimental condition (EXP) will receive the targeted intervention material developed and designed by the researchers using focus group discussions with parents.
This information will include salient benefits of the consumption of calcium-rich products.
In addition, self-regulatory strategies will be provided to encourage purchasing and consumption of calcium-rich products and address any potential barriers to purchase and consumption.
Material will sent on four different occasions via mail.
At time one (week 0) participants will be sent a 13-month calendar, at time 2 (week 8) participants will be sent a grocery pad and a recipe book.
At time 3 and 4 (week 16 and 22 respectively) participants will be sent a newsletter.
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활성 비교기: Standard Care
Individuals in the Control condition (CON) will receive general healthy eating materials including Canada's Food Guide, Healthier Grocery Shopping Guide and Cooking with Kids.
Material will sent on four different occasions via mail.
At time one (week 0) participants will be sent a 13-month calendar, at time 2 (week 8) participants will be sent a note pad and an activity book.
At time 3 and 4 (week 16 and 22 respectively) participants will be sent a newsletter.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Changes in Purchasing Behaviour
기간: Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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The purchase of calcium-rich products will be assessed objectively via grocery receipts over a 7-day period.Receipts will be mailed to UBC Okanagan.
Information provided within receipts will be entered into the ESHA nutrition analyses software.
Specifically, changes in mg of calcium purchased will be examined over the above time points.
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Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Changes in Adult Consumption Behaviour
기간: Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Consumption of calcium by the parent be assessed using a 3-day food diary at baseline, week-12, week-24 and week-52.
Data provided with the food diary will be entered into the ESHA nutrition analyses software and changes in mg of calcium consumed over time will be examined.
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Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Changes in Child Consumption Behaviour
기간: Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Consumption of calcium by the child be assessed using a 3-day food diary to be completed by the parent at baseline, week-12, week-24 and week-52.
Data provided with the food diary will be entered into the ESHA nutrition analyses software and changes in mg of calcium consumed over time will be examined.
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Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Changes in Outcome Expectations
기간: Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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A total of 21 outcomes will be assessed in relation to expected outcomes of consuming adequate calcium for the parent and 8 outcomes in relation to expected outcomes of the parents child consuming adequate calcium.
Outcomes are scored on a scale from 0 (very unlikely) to 9 (very likely).
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Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Changes in Self-Regulatory Efficacy Beliefs
기간: Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Distinct components of self-regulatory efficacy include confidence in one's ability to schedule, goal set, and overcome barriers to purchasing and consuming calcium-rich products.
A total of 11 items will be assessed and the items will be scored on a scale from 0% (Not at all confident) to 100% (Extremely confident).
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Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Changes in Parent Social Support
기간: Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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The degree to which parents perceive themselves as offering support to their child in regards to consumption of calcium-rich products will be assessed using an adapted version of the Social Support for Diet Survey (Sallis et al., 1987).
Questions will be adapted to pertain to the child's specific consumption of calcium-rich products.
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Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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Changes in Perceived Role Modelling
기간: Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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The degree to which parents perceive themselves as role modelling consumption of calcium-rich products will be assessed using an adapted version of Cullen and colleagues (2001) family and peer influences on fruit, juice and vegetable consumption.
This measure was adapted in a similar way to the current study by Draxten and colleagues (2014).
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Baseline (before the intervention begins), week-12 (mid point of the intervention), week-24 (immediately after the intervention), week-52 (6-months after the intervention is complete)
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여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
연구 기록 날짜
이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.
연구 주요 날짜
연구 시작
2015년 8월 1일
기본 완료 (실제)
2017년 3월 1일
연구 완료 (실제)
2017년 3월 31일
연구 등록 날짜
최초 제출
2015년 10월 27일
QC 기준을 충족하는 최초 제출
2015년 10월 27일
처음 게시됨 (추정)
2015년 10월 29일
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
2018년 5월 9일
QC 기준을 충족하는 마지막 업데이트 제출
2018년 5월 3일
마지막으로 확인됨
2018년 5월 1일
추가 정보
이 연구와 관련된 용어
기타 연구 ID 번호
- H14-02762
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