Feb 9, 2024 · 3 The marker gene XYX1 being high in breast cancer is associated with poor prognosis with higher hazard ratio : 3.5. I want to calculate sample size with 1 - β (power) = 80%, one sided, …

Apr 9, 2016 · Is it possible to calculate the Hazard Ratio, Log [HR], and SE for overall survival (OS) using data from a manuscript that presents Kaplan Meier curve for OS? Usually these manuscripts …

Sep 27, 2021 · 4 I often come across hazard ratios and their confidence intervals in the published literature on clinical trials. I would like to calculate the standard deviation from these confidence …

Feb 19, 2025 · Sample Size Calculation in Time-to-Event Analysis with Hazard Ratio as non-inferiority Endpoint Ask Question Asked 10 months ago Modified 10 months ago

Mar 25, 2024 · This poster has been making headlines lately due to its subject and conclusions. Specifically, I'm interested in understanding how the hazard ratios are being calculated in this table: …

Oct 15, 2020 · The hazard as a function of time is the probability of having an event given that an individual has survived up to that time. So your understanding is correct, as are your hazard …

The R survival package is very useful to do survival analysis. And I know the survdiff function can be used to compare the difference of survival time in two or more groups. And the p-value number ...

Like the first person I am interested in calculating a hazard ratio (HR) from a ratio of survival times (assuming the distributional assumptions hold).

Nov 14, 2023 · That's a good deal more complicated than the single regression coefficient that you are implicitly working with in the 2-sample tests handled by simple survival power-calculation tools. If you …

Oct 22, 2024 · The hazard ratio for males compares the hazard in men to the hazard in women. If you want the hazard ratio for women compared to men, then just invert it, or-rerun your model with the …