Randomized controlled trial of a messaging intervention to increase fruit and vegetable intake in adolescents: Affective versus instrumental messages
Randomized controlled trial of a messaging intervention to increase fruit and vegetable intake in adolescents: Affective versus instrumental messages
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DOI：
10.1111/bjhp.12208
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发表时间：
2016-11-01
影响因子：
7.9
通讯作者：
Conner, Mark
中科院分区：
文献类型：
--
作者：
Carfora, Valentina;Caso, Daniela;Conner, Mark
目的比较情感性短信和工具性短信与无短信控制对青少年果蔬摄入量的影响。采用DesignA随机对照试验，在2周内测试不同短信与无短信对FVI的影响。方法意大利南部一所高中共有1065名14-19岁的青少年完成了基线问卷，并被随机分配到三种情况之一：工具性信息（N=238）、情感信息（N=300）和无信息（N=521）。短信组的学生在两周的时间里每天收到一条短信。这些信息针对的是关于FVI的情感（情感利益）或工具（工具利益）信息。2周时自我报告的FVI是关键的因变量。分析是基于N=634人完成了研究的所有方面。结果研究发现，信息显著增加了FVI，特别是在情感状态下，这种影响部分是由情感态度和对FVI的意图的改变介导的。结论短信可以提高青少年的FVI。基于情感利益的短信比基于工具利益的短信更有效。
ObjectiveThe present research aimed to test the efficacy of affective and instrumental text messages compared with a no-message control as a strategy to increase fruit and vegetable intake (FVI) in adolescents.DesignA randomized controlled trial was used test impact of different text messages compared with no message on FVI over a 2-week period.MethodA total of 1,065 adolescents (14-19years) from a high school of the South of Italy completed the baseline questionnaire and were randomly allocated to one of three conditions: instrumental messages (N=238), affective messages (N=300), and no messages (N=521). Students in the message conditions received one message each day over a 2-week period. The messages targeted affective (affective benefits) or instrumental (instrumental benefits) information about FVI. Self-reported FVI at 2weeks was the key dependent variable. Analyses were based on the N=634 who completed all aspects of the study.ResultsFindings showed that messages significantly increased FVI, particularly in the affective condition and this effect was partially mediated by changes in affective attitude and intentions towards FVI.ConclusionText messages can be used to increase FVI in adolescents. Text messages based on affective benefits are more effective than text messages based on instrumental benefits.