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The data set has four variables: Sex, Age, Tumour thickness, and Ulceration. The main response provided in the data set is the survival time in days post-surgery. Using the data, I test the differences of survival of four factors. These will be tested via the Log-rank, Gehan, Fleming-Harrinnton and Peto-Peto tests. I fit the Cox proportional hazards regression model and Investigate interaction effect to the model. By Testing for Proportional Hazard Assumption, I find out the time varying effect and determine it.

# Graduate Seminar Series

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Mon., Mar. 20, 2023 3:30 p.m.
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Location: CK 185 and Live Stream
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**Speaker**: Chengyu Gao

**Title:** Analysis of Survival from Malignant Melanoma (69 kB)

**Abstract:**

The data set has four variables: Sex, Age, Tumour thickness, and Ulceration. The main response provided in the data set is the survival time in days post-surgery. Using the data, I test the differences of survival of four factors. These will be tested via the Log-rank, Gehan, Fleming-Harrinnton and Peto-Peto tests. I fit the Cox proportional hazards regression model and Investigate interaction effect to the model. By Testing for Proportional Hazard Assumption, I find out the time varying effect and determine it.

**Live Stream:**

https://uregina-ca.zoom.us/j/94125367372