Kaiser Margaret M, Hays Bevely J
Medical Center College of Nursing, University of Nebraska, Omaha, Nebraska 68198-5330, USA.
Issues Compr Pediatr Nurs. 2006 Jan-Mar;29(1):45-52. doi: 10.1080/01460860500523764.
Difficulty obtaining a sample is not justification for failure to study a hard-to-enroll population, particularly a vulnerable population such as pregnant adolescents. Recruitment of a representative, adequate sample of pregnant adolescents for a recent instrument development study provided multiple challenges. Although carefully developed, the sampling plan required several modifications to achieve the sample (n=145). Those challenges and the ensuing modifications to the sampling plan are discussed in relation to (a) access/institutional concerns, (b) the human subject's protection considerations, and (c) developmental/personal concerns of the pregnant adolescents. Recommendations for sampling strategies for future research are offered.
难以获取样本并不能成为不研究难以招募人群的理由，尤其是像怀孕青少年这样的弱势群体。为最近的一项工具开发研究招募具有代表性的足够数量的怀孕青少年样本面临诸多挑战。尽管抽样计划经过精心制定，但仍需多次修改才能达到所需样本量（n = 145）。本文将围绕以下方面讨论这些挑战以及随后对抽样计划所做的修改：（a）获取渠道/机构相关问题；（b）对人类受试者的保护考量；（c）怀孕青少年的发育/个人相关问题。同时还给出了未来研究抽样策略的建议。
