Recent content by fjanisch

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    Compare different risk scores in the same cohort

    Hello, i have a small question and hope you can help me. I want to compare the distribution of a prognostic score (ordinal variable) of two score methods to predict survival outcome that use different variables in a given cohort. So, both scores use a numerical score to assign the subjects to...
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    Problems with IPTW adjusted survival analysis in stata

    Yes, Fig. A2 of the appendix. They have the standardized differences in a table as well. In the paper, everything was done in stata, so it must be possible somehow. Yes, interestingly, when using the sts test, which usually is used as well to compare the medians and is used for the K-M as well...
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    Problems with IPTW adjusted survival analysis in stata

    Hello, i hope you can maybe help me. I am trying to do a IPTW survival analysis adherent to the paper of Seisen et al. I use Stata/MP 14.0 https://www.researchgate.net/profile...-Data-Base.pdf I first did a multiple imputation and subsequently, iptw. I created a graph with a comparison of...
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    IPTW survival analysis with crossed KM

    Yes, in part. Basically, because of the weighting, the Kaplan-Meier estimates cross repreatedly. From what i take, this is the reason why the proportional hezard assumption is significant. This makes sense to me, as in crossing curves, you cant make an assumption about superiority of one...
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    IPTW survival analysis with crossed KM

    Hello, i am new here but i have the feeling, i will be around for some time. Off to my question now :) I am currently doing a survival analysis between two groups of patients that either received an event (surgery) or not. I want to find out, how this affects different survival endpoints. Now i...