disease

  1. E

    5 year average data- statistically significant increase?

    Here is the scenario: I have 5 year average information for # of reported Campylobacter cases (a bacterial gastrointestinal illness) for a particular region. # from April to June, 2014-2019 2014 = 2 cases 2015 = 5 cases 2016 = 0 cases 2017= 6 cases 2018 = 11 cases Which makes the 5 year...
  2. A

    Statistical analysis and playing around with incidence rates

    Dear TalkStats Members, I am a bloody noob to R (used SPSS till now) and decided to learn R now. My first quest would be following: I have incidence rates in an Excel file for a disease, which look quite like this: Year Total Male Female 2003 0.3 0.4 0.2 2004 0.3 0.3 0.3...
  3. J

    calculating probability of disease according to age

    I'm making a program which, at one point, is supposed to estimate the probability of having a certain disease based on the patient's age. I'm going to feed the mean age at which the disease occurs, along with the standard deviation, into the program, but I can't figure out how to actually...
  4. 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...
  5. G

    Patient data - Choosing the Right Model

    Hello, I just finished up my first year as a statistics major and have been assigned a summer project from my employer at the hospital near my school. The aim of the project is to use data from 50 patients infected with a certain disease, create a data model based on this information and use...
  6. O

    Working out risk factors for a medical complication?

    Hi All - HELP! I have a large dataset on women in labour, and I'm interested in finding out risk factors for a particular complication of labour. The complication is either there, or not there. I also have lots of information on possible risk factors for the complication, e.g.: length of...
  7. J

    Is Chi-sqaure the right test for analysing these disease test results?

    Hi All! I have three tests testing for three different strains of the same disease. Unfortunately the tests are not very specific since antibodies (and therefore positive results) to the three strains are common in most populations. If however, there is a true outbreak of the disease, then of...
  8. M

    Disease Probability

    I'm stuck on a question. A doctor thinks, before testing, that the probability that his patient has XYZ disease is 85%. He tests 5 times and gets 3 positive tests and 2 negatives. When a patient does have XYZ, they test positive 70% of the time. Patients who do not have XYZ test positive...