Applying of risk adjusted cusum control chart monitoring of medical information
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Applying of risk-adjusted CUSUM control chart monitoring of medical information. Zi-Hsuan Chen Advisor : Jing- Er Chiu, Ph.D. Contents. Research Reason. Research P urposes. Research F ramework. ARL. Time conditions. CUSUM. CUSUM. ARL. Logistic Model. Cox Model. Shoulder surgery.

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Applying of risk adjusted cusum control chart monitoring of medical information

Applying of risk-adjusted CUSUM control chart monitoring of medical information

Zi-HsuanChen

Advisor: Jing-Er Chiu, Ph.D.



Research reason
Research Reason


Research p urposes
Research Purposes


Research f ramework
Research Framework

ARL

  • Time conditions

CUSUM

CUSUM

ARL

Logistic Model

Cox Model

Shoulder surgery


Limitations of research
Limitations of Research

  • Biswas ed.(2008)


Cusum control chart
CUSUMControl Chart

Proposed by Page(1954)

Small process shifts



Logistic regression
Logistic Regression

Observed outcome can have only two possible

Failure

Success

Source : Wikipedia



Cox ph model
Cox PH Model

Use survival time

Proposed by Cox(1972)

Use the Logistic Model Method and Cox Model Method to compare the result ,which can quickly detect the patient has a shoulder joint shift or death situation.

  • Applying Of Cox Model In Medical


Research process
Research Process

  • Calculate and Simulation

Collection and Simulation of patient information

  • Establish

  • Cox Model

Establish

Logistic Model

  • CUSUM control chart

Notation and Assumptions

  • Calculate ARL

  • Comparative analysis

  • Conclusion


O bject o f s tudy and assumptions
Object Of Study And Assumptions


O bject o f s tudy and assumptions1
Object Of Study And Assumptions


Logistic model in cusum
Logistic Model in CUSUM

  • Monitoring probability of Yt

  • Binary data is transformed into probability

  • Establish a Logistic Regression Model

  • Find the significant factor

  • Calculate the weight value

  • Steiner et al.(2000)

  • Draw CUSUM control chart


Cox model in cusum
Cox Model in CUSUM

  • Monitoring probability of Yt

  • Yt of time conditions convert the probability of occurrence

  • Establish a Cox Regression Model

  • Find the significant factor

  • Calculate the weight value

  • Biswas ed.(2008)

  • Draw CUSUM control chart


Simulation arl steps logistic model
Simulation ARL steps (Logistic Model )

  • Simulate number of samples N

  • calculation the patient t the surgery the probability of failure

  • is true

  • To draw CUSUM control chart , and monitoring control chart

  • In control

  • Randomly generated patient after surgery results

Out –of-control

⇒ARL1

  • is true

  • is true

  • is true

  • Steiner et al.(2000)


Simulation arl steps cox model
Simulation ARL steps(Cox Model )

  • Calculate significant factor and Hazard ratio 。

  • Simulate number of samples N , added time's condition

  • is true

  • To draw CUSUM control chart , and monitoring control chart

  • Randomly generated patient after surgery results

  • In control

Out –of-control

⇒ARL1

  • is true

  • is true

  • is true

  • W

  • Biswas ed.(2008)