Bradley R T, Young W Y, Ebbs P, Martin J
Department of Research, CTB Macmillan/McGraw-Hill, Monterey, CA 93940.
J Am Diet Assoc. 1993 Feb;93(2):196-202. doi: 10.1016/0002-8223(93)90844-b.
This article, which is the first of a two-part series, presents results for the first objective of The American Dietetic Association (ADA) 1991 Dietetic Practice Study: to determine the characteristics of advanced-level dietetics practice. A nationwide mail survey of ADA members was conducted on a stratified random sample of 8,012 beyond-entry-level (registered before April 1988) registered dietitians who were members of dietetic practice groups (DPGs). The sample was supplemented with two randomly selected control groups of 1,000 entry-level and 1,000 beyond-entry-level registered dietitians. The overall response rate was 63.1%. The 5,852 usable returns were representative of the dietetics population surveyed. A model of advanced-level professional practice was developed that specified minimum necessary requirements for advanced practitioners on five components: education and experience, professional achievement, approach to practice, professional role positions, and professional role contacts; measurement of a sixth component, advanced-level practice performance, was unsuccessful. A series of validation analyses found the model to be a statistically sound and reliable means of distinguishing advanced practitioners from other groups of dietitians in 8 of every 10 cases. A total of 461 (8.9%) dietitians met all requirements of the model and were classified as advanced practitioners. Projected estimations of advanced practitioners in the population of beyond-entry-level ADA members who are also members of DPGs ranged between 2,126 and 2,640 dietitians (3.5% to 4.3% of the ADA membership).(ABSTRACT TRUNCATED AT 250 WORDS)
本文是一个分为两部分系列文章的第一篇，介绍了美国饮食协会（ADA）1991年饮食实践研究第一个目标的结果：确定高级饮食实践的特征。对ADA成员进行了一项全国性的邮件调查，样本是从8012名非入门级（1988年4月前注册）且属于饮食实践小组（DPG）的注册营养师中分层随机抽取的。样本还补充了两个随机选择的对照组，每组1000名，分别是入门级和非入门级注册营养师。总体回复率为63.1%。5852份有效回复代表了所调查的饮食专业人群。开发了一个高级专业实践模型，该模型规定了高级从业者在五个方面的最低必要要求：教育和经验、专业成就、实践方法、专业角色定位和专业角色联系；对第六个方面，即高级实践表现的衡量未成功。一系列验证分析发现，该模型在每10个案例中有8个在统计学上是区分高级从业者和其他营养师群体的合理且可靠的方法。共有461名（8.9%）营养师符合模型的所有要求，被归类为高级从业者。在也是DPG成员的非入门级ADA成员群体中，对高级从业者的预计估计在2126至2640名营养师之间（占ADA成员的3.5%至4.3%）。（摘要截选至250字）
