Could someone explain the summary(cph.object)?

The example is in the help file of cph.

n <- 1000
set.seed(731)
age <- 50 + 12*rnorm(n)
label(age) <- "Age"
sex <- factor(sample(c('Male','Female'), n,
              rep=TRUE, prob=c(.6, .4)))
cens <- 15*runif(n)
h <- .02*exp(.04*(age-50)+.8*(sex=='Female'))
dt <- -log(runif(n))/h
label(dt) <- 'Follow-up Time'
e <- ifelse(dt <= cens,1,0)
dt <- pmin(dt, cens)
units(dt) <- "Year"
dd <- datadist(age, sex)
options(datadist='dd')
Srv <- Surv(dt,e)

f <- cph(Srv ~ rcs(age,4) + sex, x=TRUE, y=TRUE)
summary(f)

                                         Effects              Response : Srv

 Factor            Low    High   Diff.  Effect S.E. Lower 0.95 Upper 0.95
 age               40.872 57.385 16.513 1.21   0.21 0.80       1.62
  Hazard Ratio     40.872 57.385 16.513 3.35     NA 2.22       5.06
 sex - Female:Male  2.000  1.000     NA 0.64   0.15 0.35       0.94
  Hazard Ratio      2.000  1.000     NA 1.91     NA 1.42       2.55


Wat's the meaning of Effect, S.E. Lower, Upper?

Thanks

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