Increasing Household Purchase and Child Consumption of Calcium Products
2018年5月3日 更新者：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.
研究概览
地位
完全的
条件
研究类型
介入性
注册 (实际的)
189
阶段
- 不适用
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
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British Columbia
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Kelowna、British Columbia、加拿大、V1V 1V7
- Health and Exercise Psychology Laboratory
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参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
- 孩子
- 成人
- 年长者
接受健康志愿者
是的
有资格学习的性别
全部
描述
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
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：支持治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：单身的
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的：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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有源比较器：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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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
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Changes in Purchasing Behaviour
大体时间：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
大体时间：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
大体时间：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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次要结果测量
结果测量 |
措施说明 |
大体时间 |
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Changes in Outcome Expectations
大体时间：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
大体时间：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
大体时间：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
大体时间：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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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2015年8月1日
初级完成 (实际的)
2017年3月1日
研究完成 (实际的)
2017年3月31日
研究注册日期
首次提交
2015年10月27日
首先提交符合 QC 标准的
2015年10月27日
首次发布 (估计)
2015年10月29日
研究记录更新
最后更新发布 (实际的)
2018年5月9日
上次提交的符合 QC 标准的更新
2018年5月3日
最后验证
2018年5月1日
更多信息
与本研究相关的术语
其他研究编号
- H14-02762
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.