Kothe Emily J, Mullan Barbara A
School of Psychology, Deakin University, Melbourne, VIC 3125, Australia.
BMC Public Health. 2014 Sep 30;14:1020. doi: 10.1186/1471-2458-14-1020.
Fresh Facts is a 30-day email-delivered intervention designed to increase the fruit and vegetable consumption of Australian young adults. This study investigated the extent to which the program was acceptable to members of the target audience and examined the relationships between participant and intervention characteristics, attrition, effectiveness, and acceptability ratings.
Young adults were randomised to two levels of message frequency: high-frequency (n = 102), low-frequency (n = 173). Individuals in the high-frequency group received daily emails while individuals in the low-frequency group received an email every 3 days.
Individuals in the high-frequency group were more likely to indicate that they received too many emails than individuals in the low-frequency group. No other differences in acceptability were observed. Baseline beliefs about fruit and vegetables were an important predictor of intervention acceptability. In turn, acceptability was associated with a number of indicators of intervention success, including change in fruit and vegetable consumption.
The findings highlight the importance of considering the relationship between these intervention and participant factors and acceptability in intervention design and evaluation. Results support the ongoing use of email-based interventions to target fruit and vegetable consumption within young adults. However, the relationships between beliefs about fruit and vegetable consumption and acceptability suggest that this intervention may be differentially effective depending on individual's existing beliefs about fruit and vegetable consumption. As such, there is a pressing need to consider these factors in future research in order to minimize attrition and maximize intervention effectiveness when interventions are implemented outside of a research context.
“新鲜事实”是一项为期30天的电子邮件干预项目，旨在增加澳大利亚年轻人的水果和蔬菜摄入量。本研究调查了该项目在目标受众成员中的可接受程度，并探讨了参与者与干预特征、损耗、有效性和可接受性评分之间的关系。
将年轻人随机分为两种信息频率水平：高频组（n = 102）、低频组（n = 173）。高频组的个体每天收到电子邮件，而低频组的个体每3天收到一封电子邮件。
高频组的个体比低频组的个体更有可能表示他们收到的电子邮件过多。在可接受性方面未观察到其他差异。对水果和蔬菜的基线信念是干预可接受性的重要预测因素。反过来，可接受性与干预成功的一些指标相关，包括水果和蔬菜摄入量的变化。
研究结果强调了在干预设计和评估中考虑这些干预因素与参与者因素之间的关系以及可接受性的重要性。结果支持继续使用基于电子邮件的干预措施来针对年轻人的水果和蔬菜摄入量。然而，对水果和蔬菜消费的信念与可接受性之间的关系表明，这种干预措施可能因个体对水果和蔬菜消费的现有信念而具有不同的效果。因此，迫切需要在未来的研究中考虑这些因素，以便在研究背景之外实施干预措施时尽量减少损耗并最大限度地提高干预效果。
