Cox Regression (Survival Analysis) : WinSTAT Statistics Software Add-In for Excel

Survival Analysis (Cox-Regression)

Sample Results as an Excel Table:

Cox regression

Survival time:	Survival Time
Event:	Death

X-Variables:	Treatment numeric
	Age

Method:	Direct

Steps	P	-2 Log- Likelihood	Chi-Square	Degrees of Freedom	P Total

Treatment numeric(+)	----	----	----	----	----
Age(+)	----	----	----	----	----


Equation
		95%			Hazard =
	Coefficient	Conf. (±)	Std.Error	P	Exp(Coef.)

Treatment numeric	0.97236485	1.81935207	0.92824667	0.29485592	2.6441902
Age	0.09701086	0.22328821	0.11392327	0.39446635	1.10187234


Survival table
	Cumulative Hazard Rate, Baseline	at Covariate Mean		Survival Probability, Cursive case
Survival time	Cumulative Hazard Rate, Baseline	Survival Probability	Cumulative Hazard Rate	Survival Probability, Cursive case

21	0.00030755	0.95108341	0.05015351	----
42	0.00069007	0.89356855	0.11253222	----
55	0.00110832	0.83465523	0.18073654	----
69	0.00161467	0.76850455	0.2633088	----
130	0.00288931	0.62427243	0.47116841	----
210	0.00392335	0.52740174	0.6397927	----

Sample Results as an Excel Chart:

The curve displays the survival probabilites of an average individual ("at Mean"). Optionally, the survival curve of a specific individual with known input values ("Cursive case") may be displayed in contrast.