在检查患者体验调查中尺度性能差异时使用外部
Gary A Abel1, Ron D Hays2, John L Campbell1
1Department of Health and Community Sciences, University of Exeter, St Luke's Campus Exeter, UK.
Medical care
|February 10, 2025
概括
在患者体验调查中,使用带有得分的标记的外部标显示了显著的差异性项目功能 (DIF). 这种方法比内部分析更敏感于尺度使用差异,改善了患者调查数据的解释.
科学领域:
- 医疗保健服务研究 医疗服务研究
- 心理测量 心理测量 心理测量
- 调查方法 调查方法
背景情况:
- 评估测量等效对于识别患者体验差异至关重要.
- 外部,就像得分的图片一样,提供了一个有希望的,但未被充分利用的方法来评估尺度使用差异.
- 患者调查是了解患者体验的关键工具.
研究的目的:
- 证明小幅图作为外部点的实用性,用于评估患者体验调查中的测量等价性.
- 为了比较外部 anchor 分析与内部分析的有效性,以检测差异性项目功能 (DIF).
主要方法:
- 分析了英国 (通用实践患者调查) 和美国 (医疗保健提供者和系统临床医生和小组的消费者评估) 数据集.
- 招募了多样化的患者群体:560名白人英国人,560名巴基斯坦成年人 (英国);575名亚裔美国人,505名非西班牙裔白人患者 (美国).
- 患者使用既定调查问题来评价沟通质量.
主要成果:
- 外部点分析显示,在英国和美国数据中,存在差异性项目功能 (DIF) 的实质证据.
- 内部DIF分析,没有外部,产生了DIF的最小证据.
- 外部 anchor 方法突出了内部方法忽略的差异.
结论:
- 外部器规避了项目缺乏跨组DIF的假设,这可能不适用于患者体验数据.
- 患者体验项目可能会受到响应倾向的影响 (例如,极端响应),可能会掩盖真正的DIF.
- 基于图片的外部 anchors 提供了对患者体验措施的测量等价性的更可靠的评估.
相关概念视频
Ordinal Level of Measurement
22.9K
The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. For analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
Data measured using an ordinal scale are similar to nominal scale data, but there is one major difference. The ordinal scale data can be ordered. An example of ordinal scale data is a list of the top five national parks...
Data measured using an ordinal scale are similar to nominal scale data, but there is one major difference. The ordinal scale data can be ordered. An example of ordinal scale data is a list of the top five national parks...
22.9K
Surveys
14.7K
Often, psychologists develop surveys as a means of gathering data. Surveys are lists of questions to be answered by research participants, and can be delivered as paper-and-pencil questionnaires, administered electronically, or conducted verbally. Generally, the survey itself can be completed in a short time, and the ease of administering a survey makes it easy to collect data from a large number of people.
14.7K
One-Way ANOVA: Equal Sample Sizes
3.2K
One-Way ANOVA can be performed on three or more samples with equal or unequal sample sizes. When one-way ANOVA is performed on two datasets with samples of equal sizes, it can be easily observed that the computed F statistic is highly sensitive to the sample mean.
Different sample means can result in different values for the variance estimate: variance between samples. This is because the variance between samples is calculated as the product of the sample size and the variance between the...
Different sample means can result in different values for the variance estimate: variance between samples. This is because the variance between samples is calculated as the product of the sample size and the variance between the...
3.2K
Testing a Claim about Standard Deviation
2.4K
A complete procedure to test a claim about population standard deviation or population variance is explained here.
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...
2.4K
The Anchoring-and-Adjustment Heuristic
7.2K
In order to make good decisions, we use our knowledge and our reasoning. Often, this knowledge and reasoning is sound and solid. However, sometimes, we are swayed by biases or by others manipulating a situation. For example, let’s say you and three friends wanted to rent a house and had a combined target budget of $1,600. The realtor shows you only very run-down houses for $1,600 and then shows you a very nice house for $2,000. Might you ask each person to pay more in rent to get the...
7.2K
Regression Toward the Mean
6.3K
Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
6.3K


