Campbell M K, Symons M, Demark-Wahnefried W, Polhamus B, Bernhardt J M, McClelland J W, Washington C
Department of Nutrition, University of North Carolina, Chapel Hill 27599, USA.
Am J Health Promot. 1998 Jan-Feb;12(3):185-91. doi: 10.4278/0890-1171-12.3.185.
This study examined the relationship between stages of change, other psychosocial factors, and fruit and vegetable (F&V) consumption among rural African-Americans participating in a 5 a Day study.
The cross-sectional design assessed associations between F&V intake, stage of change, self-efficacy, beliefs, barriers, and social support.
Participants were surveyed by telephone.
Subjects were 3557 adult church members (response rate, 79.1%), aged 18 and over from 10 North Carolina counties.
A seven-item food frequency measured F&V intake. Stage of change was measured using four items; other psychosocial variables were measured using Likert scales. Chi-square tests and analysis of variance were used in statistical analyses.
The majority of participants (65%) were in the preparation stage of change. Individuals in action/maintenance consumed an average of 6.5 daily F&V servings compared to 3.3 to 3.5 servings for those in precontemplation, contemplation, and preparation. Self-efficacy, social support, and belief about how many daily F&V servings are needed, were positively associated with stage. Barriers were most prevalent among precontemplators.
The findings support the applicability of the stages-of-change model to dietary change among rural African-Americans. The relationship between stage, self-efficacy, social support, and barriers supports using a multicomponent intervention strategy.
本研究调查了参与“每日五蔬果”研究的美国非裔农村居民的行为改变阶段、其他社会心理因素与蔬果消费之间的关系。
横断面设计评估了蔬果摄入量、行为改变阶段、自我效能感、信念、障碍和社会支持之间的关联。
通过电话对参与者进行调查。
对象为来自北卡罗来纳州10个县的3557名成年教会成员(回复率为79.1%),年龄在18岁及以上。
用一个包含七个条目的食物频率问卷来测量蔬果摄入量。用四个条目来测量行为改变阶段;其他社会心理变量用李克特量表来测量。统计分析采用卡方检验和方差分析。
大多数参与者(65%)处于行为改变的准备阶段。处于行动/维持阶段的个体平均每天食用6.5份蔬果,而处于前意向、意向和准备阶段的个体每天食用3.3至3.5份。自我效能感、社会支持以及对每日所需蔬果份数的信念与行为改变阶段呈正相关。障碍在前意向者中最为普遍。
研究结果支持行为改变阶段模型在非裔美国农村居民饮食改变中的适用性。行为改变阶段、自我效能感、社会支持和障碍之间的关系支持采用多成分干预策略。