概括
一种新的调查方法通过提供更短的工具来提高人类服务评估的响应率. 然而,这种方法可能不会显著减少非响应偏差,尽管它可以揭示研究臂内的结果差异.
科学领域:
- 社会科学 社会科学 社会科学
- 项目评估 项目评估
- 调查方法 调查方法
背景情况:
- 人类服务计划评估经常使用调查,在随机对照试验中收集结果数据.
- 低的调查响应率,特别是在控制组中,阻碍了评估达到清算机构设定的高证据质量标准.
- 提高响应率的传统方法是昂贵的,耗时的,对减少非响应偏差的影响有限.
研究的目的:
- 引入和评估一种新的方法,以提高在人力服务计划评估中的调查响应率.
- 评估缩短数据收集工具对不情愿的受访者有效性的评估.
- 确定新方法是否减少非响应偏差并影响结果数据.
主要方法:
- 实施了一种新的调查方法,允许受访者完成数据收集工具的缩短版本.
- 该研究比较了这种新方法的有效性与提高反应率的传统方法.
- 分析的重点是响应率,成本效益,以及减少非响应偏差的程度.
主要成果:
- 这种新方法成功地提高了调查响应率,并且比传统方法更具成本效益.
- 使用缩短仪器的不情愿的受访者的数据可能并没有大大减少对计划影响的非响应偏差.
- 然而,该方法在研究臂内发现了结果平均值的显著差异,这对于描述性目的有价值.
结论:
- 虽然新方法提高了响应率并降低了成本,但它在影响评估中减轻非响应偏差的能力值得怀疑.
- 这些发现与先前的研究一致,表明积极追求高响应率可能会带来偏见减少的收益.
- 该方法在识别研究组内结果差异方面的实用性使其对描述性调查研究具有潜在的有用性.
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