Parvin C A
Department of Pathology, Washington University School of Medicine, St. Louis, MO 63110.
Clin Chem. 1992 Mar;38(3):358-63.
A simulation approach that allows direct estimation of the power of a quality-control rule to detect error that persists until detection is used to compare and evaluate the error detection capabilities of a group of quality-control rules. Two persistent error situations are considered: a constant shift and a linear trend in the quality-control mean. A recently proposed "moving slope" quality-control test for the detection of linear trends is shown to have poor error detection characteristics. A multimean quality-control rule is introduced to illustrate the strategy underlying multirule procedures, which is to increase power without sacrificing response rate. This strategy is shown to provide superior error detection capability when compared with other rules evaluated under both error situations.
一种模拟方法可直接估计质量控制规则检测持续到被检测出的误差的功效，该方法用于比较和评估一组质量控制规则的误差检测能力。考虑了两种持续误差情况：质量控制均值中的恒定偏移和线性趋势。结果表明，最近提出的用于检测线性趋势的“移动斜率”质量控制测试具有较差的误差检测特性。引入了一种多均值质量控制规则来说明多规则程序的基本策略，即提高功效而不牺牲响应率。与在两种误差情况下评估的其他规则相比，该策略显示出具有卓越的误差检测能力。
