## Warning: package 'survival' is in use and will not be installed
## Warning: package 'survival' is in use and will not be installed
## Warning: package 'survminer' is in use and will not be installed
## Warning: package 'ggplot2' is in use and will not be installed
## Call:
## survdiff(formula = Surv(time, status) ~ sex, data = lung)
##
## N Observed Expected (O-E)^2/E (O-E)^2/V
## sex=1 138 112 91.6 4.55 10.3
## sex=2 90 53 73.4 5.68 10.3
##
## Chisq= 10.3 on 1 degrees of freedom, p= 0.001
## Call:
## coxph(formula = Surv(time, status) ~ age + sex + ph.ecog, data = lung)
##
## n= 227, number of events= 164
## (1 observation deleted due to missingness)
##
## coef exp(coef) se(coef) z Pr(>|z|)
## age 0.011067 1.011128 0.009267 1.194 0.232416
## sex -0.552612 0.575445 0.167739 -3.294 0.000986 ***
## ph.ecog 0.463728 1.589991 0.113577 4.083 4.45e-05 ***
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## exp(coef) exp(-coef) lower .95 upper .95
## age 1.0111 0.9890 0.9929 1.0297
## sex 0.5754 1.7378 0.4142 0.7994
## ph.ecog 1.5900 0.6289 1.2727 1.9864
##
## Concordance= 0.637 (se = 0.025 )
## Likelihood ratio test= 30.5 on 3 df, p=1e-06
## Wald test = 29.93 on 3 df, p=1e-06
## Score (logrank) test = 30.5 on 3 df, p=1e-06
## chisq df p
## age 0.188 1 0.66
## sex 2.305 1 0.13
## ph.ecog 2.054 1 0.15
## GLOBAL 4.464 3 0.22