Question

HW 10 1. Review the output for a multibaciable Cox proes Calculate thng a sample of 5Urtobardmodel predicting onset of answers. (2pts) for each independent variable. Fill n the table with your each a. Calculate the Hazards Ratios Multivariable model output HR Race/Ethnicity (ref white) Black 0.351 0.277 0.029 0.002 0.041 0.235 Hispanic Gender (ref man) Education (ref = HS/GED) 0.001 0.462 0.675 0.006 0.371 -0.139 0.009 0.072 cHigh school >High school Age Income

Answer 1

Answer to the question)

Part a)

Hazards ratio is simply the chance of a hazard occurring divided by the chance of non occurrence of hazard

Following are the calculations for each of the independent variable:

HR (p/(1-p)) Factors B Black Hispanic Gender Less HS More HS Age Income 0.0020 0.0428 0.3072 0.0010 0.8587 2.0769 0.0060 0.351 0.277 0.0290.235 0.371 0.139 0.0090.675 0.0720.006 0.002 0.041 0.001 0.462

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Part b)

The factors with P value < 0.05 are considered to be statistically significant

Thus:

Significant Factors B Black Hispanic Gender Less HS More HS Age Income 0.002 Yes 0.351 0.277 0.041 Yes 0.029 0.371 0.139 0.009 0.675 No 0.235 No 0.001 Yes 0.462 No 0720.006 Yes 0.

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Part c)

HR (p/(1-p)) Interpretation FactorsE Black Hispanic0.2770.041 Gender Less HS More HS -0.139 Age Income0.072 0.006 .351 0.002 0.0020 0.2% of the subjects have the chance of hazard 0.0428 4.28% of the subjects have the chance of hazard 0.3072 30.72% of the subjects have the chance of hazard 0.00 100.10% of the subjects have the chance of hazards 0.8587 85.87% of the subjects have the chance of hazards 2.0769 207.69% of the subjects have the chance of hazards 0.0060 0.60% of the subjects have the chance of hazards 0.0290.235 0.3710.001 0.462 0.00) 0.675