Survival Analysis Part 2

Descriptive Summary

Below is a descriptive summary of key variables in the Data for practice_BC_lecture4_N220 dataset

## ## Gender Distribution

Gender	Count	Proportion
female	47	0.236
male	152	0.764

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## ## Stage Distribution

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## ## Summary Statistics for Continuous Variables

Variable	Min	Q1	Median	Mean	Q3	Max
age	28	53	61	61.17085	69	86
time_to_death	1	995	1943	2177.66834	3376	6220
time_to_progression	1	110	496	767.24623	1009	4052

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## ## Standard Deviations

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## ## Summary by Stage

Stage	Count	Mean_age	Median_time_death
1	46	58.21739	2122.5
2	70	57.82857	2035.0
3	60	66.21667	1843.0
4	22	64.72727	1146.5
NA	2	50.00000	2905.0

## ## Cox Model Results for Time-to-Death

Variable	Hazard_Ratio	CI_lower	CI_upper	P_value
Stage	1.842	1.204	2.818	0.005
gendermale	1.230	0.659	2.295	0.515
age	1.048	1.017	1.080	0.002
Gene1	0.667	0.343	1.298	0.233
Gene2	0.804	0.377	1.716	0.574
Gene3	0.774	0.355	1.690	0.521
Gene4	0.828	0.287	2.384	0.726
Gene5	1.212	0.528	2.781	0.649

## 
## ## Cox Model Results for Time-to-Progression

Variable	Hazard_Ratio	CI_lower	CI_upper	P_value
Stage	2.705	2.040	3.587	0.000
gendermale	1.033	0.661	1.615	0.885
age	0.983	0.965	1.002	0.077
Gene1	1.333	0.846	2.100	0.215
Gene2	1.771	1.133	2.768	0.012
Gene3	0.337	0.183	0.620	0.000
Gene4	1.444	0.789	2.643	0.233
Gene5	1.113	0.635	1.953	0.708