Description Usage Arguments Value Examples

The function compares two Kaplan Meier curves in one plot

1 | ```
km_combine(x1, x2, pos = 0)
``` |

`x1` |
Nx2 data matrix,first columen represents survival time of the i-th subject, second column represents censored flag (0 if not censored, 1 if censored) |

`x2` |
Nx2 data matrix,first columen represents survival time of the i-th subject, second column represents censored flag (0 if not censored, 1 if censored) |

`pos` |
The position of the legend. Can be 0 or 1. The legend will be on the topright if set to 0. The legend will be on the bottomleft if set to 1. Default is 0. |

A combined Kaplan Meier curve

1 2 3 4 5 6 7 8 | ```
t1 <- c(2,3,4,5.5,7,10,12,15)
c1 <- c(0,0,1,0,0,1,0,0)
t2 <- c(1,3,5,4,8,10,9,11)
c2 <- c(0,0,0,0,1,0,0,0)
x1<-cbind(t1,c1)
x2<-cbind(t2,c2)
km_combine(x1,x2)
km_combine(x1,x2,pos=1)
``` |

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