Sampling in qualitative research. Purposeful and theoretical sampling; merging or clear boundaries?
Sampling in qualitative research. Purposeful and theoretical sampling; merging or clear boundaries?
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DOI：
10.1046/j.1365-2648.1997.t01-25-00999.x
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发表时间：
1997-09-01
影响因子：
3.8
通讯作者：
Coyne, IT
中科院分区：
文献类型：
--
作者：
Coyne, IT
抽样是定性研究中一个非常复杂的问题，因为文献中描述的定性抽样有许多变体，并且抽样类型有许多混淆和重叠，特别是在有目的和理论抽样的情况下，有目的和理论的术语在文献中被视为同义词并可互换使用。许多最常见的误解与术语的不同含义和用法有关。重要的是要审查术语，以便使基本假设更加明确。护理话语中缺乏共同的含义和术语，为新手研究人员造成了混乱，并增加了研究方法的生产。本文分析了批判性目的抽样和理论抽样，并对理论抽样在护理研究中的应用进行了澄清。其目的是不作出规定性的声明抽样，而是要加强了解有目的的和理论的抽样护理研究之间的差异。
Sampling is a very complex issue in qualitative research as there are many variations of qualitative sampling described in the literature and much confusion and overlapping of types of sampling, particularly in the case of purposeful and theoretical sampling, The terms purposeful and theoretical are viewed synonomously and used interchangeably in the literature. Many of the most frequent misinterpretations relate to the disparate meanings and usage of the terminology. It is important that the terminology is examined so that underlying assumptions be made more explicit. Lack of shared meanings and terminology in the nursing discourse creates confusion for the neophyte researcher and increases the production of studies with weak methodologies. This paper analyses critically purposeful and theoretical sampling and offers clarification on the use of theoretical sampling for nursing research. The aim is not to make prescriptive statements on sampling; rather, to enhance understanding of the differences between purposeful and theoretical sampling for nursing research.