Borland S E, Robinson S M, Crozier S R, Inskip H M
MRC Epidemiology Resource Centre, Southampton General Hospital, University of Southampton, Southampton, SO16 6YD, UK.
Eur J Clin Nutr. 2008 Jan;62(1):119-26. doi: 10.1038/sj.ejcn.1602684. Epub 2007 Feb 14.
To examine the stability of dietary patterns in young women over a two-year period and to identify factors that influence stability.
A food frequency questionnaire was used to assess diet. In a subgroup, this was repeated after 2 years. Questions were asked about major changes to diet over this time. Dietary patterns were identified using principal components analysis and pattern scores were compared at the two time points. The consumption of foods was also examined. The relationship between change in pattern scores and socio-demographic factors and body mass index was assessed.
The Southampton Women's Survey, a prospective study of diet, health and lifestyle in young women and their influences on fetal growth.
A subgroup of 94 women from a cohort of 6129 nonpregnant women aged 20-34 years.
Two dietary patterns, labelled 'prudent' and 'high energy', were identified. Spearman correlation coefficients between the initial and repeat scores for the prudent and high-energy patterns were 0.81 and 0.64, respectively. Average changes (repeat - initial) were 0.13 and -0.01 SD of initial score. Change in prudent dietary pattern score was influenced by amount of strenuous exercise taken and by changes in partnership status. An increase in high-energy pattern score was associated with lower social class.
Dietary patterns in young women are reasonably stable over a 2-year period. This suggests that dietary patterns identified in the recent past may provide useful information about current dietary patterns.
研究年轻女性两年内饮食模式的稳定性，并确定影响稳定性的因素。
使用食物频率问卷评估饮食。在一个亚组中，两年后重复此项评估。询问了这段时间内饮食的主要变化。通过主成分分析确定饮食模式，并比较两个时间点的模式得分。还研究了食物的摄入量。评估了模式得分变化与社会人口统计学因素及体重指数之间的关系。
南安普敦女性调查，一项关于年轻女性饮食、健康和生活方式及其对胎儿生长影响的前瞻性研究。
从6129名年龄在20 - 34岁的非孕妇队列中选取的94名女性亚组。
确定了两种饮食模式，分别标记为“谨慎型”和“高能量型”。谨慎型和高能量型模式的初始得分与重复得分之间的斯皮尔曼相关系数分别为0.81和0.64。平均变化（重复得分 - 初始得分）分别为初始得分的0.13和 -0.01标准差。谨慎型饮食模式得分的变化受剧烈运动量和伴侣关系变化的影响。高能量型模式得分的增加与较低的社会阶层相关。
年轻女性的饮食模式在两年内相当稳定。这表明近期确定的饮食模式可能为当前饮食模式提供有用信息。
