Latent profile analysis of eating episodes in anorexia nervosa.
Latent profile analysis of eating episodes in anorexia nervosa.
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DOI：
10.1016/j.jpsychires.2014.02.019
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发表时间：
2014-06
影响因子：
4.8
通讯作者：
Le Grange, Daniel
中科院分区：
文献类型：
--
作者：
Goldschmidt, Andrea B.;Wonderlich, Stephen A.;Crosby, Ross D.;Cao, Li;Engel, Scott G.;Lavender, Jason M.;Mitchell, James E.;Crow, Scott J.;Peterson, Carol B.;Le Grange, Daniel
关键词：
尽管主要以进食行为障碍为特征，但对神经性厌食症(AN)的具体进食行为及其与不同情绪、行为和环境特征的关系知之甚少。患有AN的女性(n=118)完成了为期两周的生态瞬时评估(EMA)方案，在此期间，她们报告了与日常饮食和情绪相关的模式。潜伏期分析被用来根据以下指标的存在或不存在来识别进食事件的类别：失控；暴饮暴食；独自进食；避免食物；以及饮食限制。最适合的模型支持5类解决方案：回避性进食、单独进食、暴饮暴食、限制进食和失控进食。失控和暴饮暴食的特点是同时产生高水平的负面情绪，更有可能采取补偿行为。限制进食课程与同时报告的压力事件的数量最多有关，而回避和单独进食课程的特点是伴随压力事件的相对较少。身体检查最不可能与限制饮食行为一起发生。结果支持在AN中存在不同类型的进食发作，这些进食发作与不同程度的负面情绪、压力和进食障碍的行为特征有关。失控和饮食限制可能在AN中起到不同的功能目的，正如它们与负面情绪和压力的不同关联所强调的那样。对AN的临床干预可能受益于针对患有该疾病的人的饮食行为的功能方面。
Despite being characterized primarily by disturbances in eating behavior, relatively little is known about specific eating behaviors in anorexia nervosa (AN) and how they relate to different emotional, behavioral, and environmental features. Women with AN (n=118) completed a 2-week ecological momentary assessment (EMA) protocol during which they reported on daily eating- and mood-related patterns. Latent profile analysis was used to identify classes of eating episodes based on the presence or absence of the following indicators: loss of control; overeating; eating by oneself; food avoidance; and dietary restraint. The best-fitting model supported a 5-class solution: avoidant eating; solitary eating; binge eating; restrictive eating; and loss of control eating. The loss of control and binge eating classes were characterized by high levels of concurrent negative affect and a greater likelihood of engaging in compensatory behaviors. The restrictive eating class was associated with the greatest number of concurrently-reported stressful events, while the avoidant and solitary eating episode classes were characterized by relatively few accompanying stressful events. Body checking was least likely to occur in conjunction with restrictive eating behaviors. Results support the presence of discrete types of eating episodes in AN that are associated with varying degrees of negative affect, stress, and behavioral features of eating disorders. Loss of control and dietary restriction may serve distinct functional purposes in AN, as highlighted by their differing associations with negative affect and stress. Clinical interventions for AN may benefit from targeting functional aspects of eating behavior among those with the disorder.
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