mortality

  1. M

    Confidence intervals exceeding 100% and going below 0% for mortality rates

    Hello, This is probably a very naïve question however, when plotting some graphs of mosquito mortality against different insecticide treatments I noticed the confidence intervals for some of the most effective treatments exceed 100% and that in the control they sometimes go below 0%. Firstly...
  2. M

    How to test if gender impacts mortality rates when already considering age

    Hi, I am currently working on a research project where I'm analysing the impact of different factors on mortality. I have the past 10 years of data from a specific hospital and I have graphed the mortality curve by age separately for males and females. I can see that the one curve lies above...
  3. R

    [WinBUGS] Hierarchical Analysis in WinBUGS14 "Undefined Real Result"

    Hello, I'm new here so I hope that I am posting in the correct forum. I am building a stock-recruitment hierarchical model for Atlantic cod in WinBUGS14. In this case, I'm estimating several hyperparameters across several different and exchangeable stocks. BEFORE I can do that, I must...
  4. K

    Cox Proportional Hazards Assumption Question

    I have a dataset of cancer cases from 1997 to 2007. I am performing a Cox Model on this set of cases. However, I just realized that mortality rates and the raw number of deaths are decreasing. Does anyone have an opinion as to whether a non-constant death rate over time will violate any Cox...