prevalence

  1. J

    question about incidence and prevalence

    I have a question about incidence and prevalence, so maybe it's off topic (if so can anyone recommended another forum?) I have a paper that claims to measure incidence and prevalence in one study. They're calling any new cases that appeared (starting dialysis) in the most recent year an...
  2. S

    [R] Prevalence by site. Stuck after fisher.test and pairwise.t.test

    Hi, I run into a problem I can't solve and I got stuck doing the pairwise.t.test. I'll try to give you as many details I could so maybe you can help me out. Thanks in advance. I'm studying the prevalence of one parasite on a host from different localities. I do it by assigning presence...
  3. J

    Testing for significance: Disease Prevalence vs Disease Severity

    Hi Folks, This is my first post and low and behold, it's a help request. I am a relative stats beginner and I have been searching the net for clues to help me determine the correct statistical test to undertake. I have been unable to work this out- perhaps I am just not used to the language. I...
  4. R

    Percentage Prevalence comparison (non-independent groups)

    Hi all! I have a dataset which I think could potentially be very exciting but I am struggling to find how to analyse it! We have gathered lots of information on the percentage if individuals who exhibit different forms of the same class of behaviour (categorical data- present/absent). All...
  5. R

    Literature review: comparing prevalences calculated from existing data. Chi-squared?

    I am currently conducting a systematic review of the literature on the prevalence and topography of challenging behaviours (such as self-injury and aggression) within a specific syndrome. I was wondering if you could advise me about whether there are any tests that I can do to conduct the...
  6. A

    How to estimate a population prevalence from several primary studies

    I have received point estimates from several studies for the prevalence of a rare disease, and I would like to estimate the over-all prevalence in the population of interest, together with some indication of the precision of the estimation (preferrably a confidence interval). The trouble is that...