New confidence intervals for the difference between two sensitivities at a fixed level of specificity

Statistics in Medicine - Tập 25 Số 20 - Trang 3487-3502 - 2006
Gengsheng Qin1, Yu‐Sheng Hsu, Xiao‐Hua Zhou
1Department of Mathematics and Statistics, Georgia State University, University Plaza, Atlanta, GA 30303, USA

Tóm tắt

AbstractFor two continuous‐scale diagnostic tests, it is of interest to compare their sensitivities at a predetermined level of specificity. In this paper, we propose three new intervals for the difference between two sensitivities at a fixed level of specificity. These intervals are easy to compute. We also conduct simulation studies to compare the relative performance of the new intervals with the existing normal‐ approximation‐based interval proposed by Wieand et al. Our simulation results show that the newly proposed intervals perform better than the existing normal‐approximation‐based interval in terms of coverage accuracy and interval length. Copyright © 2005 John Wiley & Sons, Ltd.

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Tài liệu tham khảo

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10.1002/sim.4780060207

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Thông tin xuất bản

Statistics in Medicine

Tập 25 Số 20

3487-3502

Thông tin tác giả