Risk stratification (No. of women) | Time | External validation in PIERS cohort | ||
---|---|---|---|---|

Observed survival probability \( \left(\overline{S}(t)\right) \) |
Predicted survival probability ( Ŝ(t))
| Ratio \( \left(\overline{S}(t)\right)/\left(\widehat{S}(t)\right) \) | ||

≤ 15th (n = 59) | 48 hours | 0.91 | 0.95 | 0.96 |

1 week | 0.81 | 0.79 | 1.0 | |

> 15th–50th (n = 70) | 48 hours | 0.88 | 0.89 | 1.0 |

1 week | 0.62 | 0.60 | 1.0 | |

> 50th –85th (n = 123) | 48 hours | 0.90 | 0.70 | 1.3 |

1 week | 0.40 | 0.23 | 1.7 | |

> 85th (n = 87) | 48 hours | 0.46 | 0.28 | 1.6 |

1 week | 0.14 | 0.02 | 7.0 |