# How to find probability of survival of a particular patient from kaplan meier plot?

Upon doing:

kmsurvival <<- survfit(Surv(time, event) ~ Risk)


I get a KM plot similar to :

Now, for a particular patient in the data; say patient number 15, can I find out his/her probability of survival at a given time, using the kaplan meier estimate?

kmsurvival <- survfit(Surv(time, event) ~ Risk)