Phase I Study of Surgical Performances with Risk-Adjusted Shewhart Control Charts

作者：Zhang, Lingyun^*; Gan, Fah F; Loke, Chok K

来源：Quality Technology and Quantitative Management, 2012, 9(4): 375-382.

DOI：10.1080/16843703.2012.11673299

• Likelihood ratio test
• logistic regression
• Parsonnet score
• patient case-mix
• predicted risk
• statistical process control

Monitoring a surgical process has gained prominence in recent years. A number of risk-adjusted charting procedures have been developed for this purpose. For the control limits of charting procedures in a phase II monitoring to be accurate, they must be based on data taken from a process that is in control. We propose using a risk-adjusted Shewhart chart for a phase I study because of its ability to detect extreme observations from out of control processes. The statistic used is shown to be a likelihood ratio test statistic. A real data set is used to illustrate the procedure.

• 出版日期2012-12
• 单位北京师范大学-香港浸会大学联合国际学院