Recent content by qjuice

  1. Q

    Chi Square: Columns are repeated measures of ordinal dependent variable?

    I have 300 people. They are placed into one of two groups (Group_Variable: A or B). Then four measurements are taken (V1, V2, V3, V4) and these are on an ordinal scale (1-3). [The four measurements are on different parts of the body but should theoretically have the same value - for example...
  2. Q

    95% CI for rare incidence rate increasing in time.

    I'm very confused by the above equations. Definitely not a stat expert, and I don't know what a, b, time, or timebar mean. I tried to search and I'm not getting very far. With regards to the comment above from hlsmith, yes the point of the graph is to draw conclusions regarding an increasing...
  3. Q

    95% CI for rare incidence rate increasing in time.

    I just used unadjusted Poisson distribution for a CI.
  4. Q

    95% CI for rare incidence rate increasing in time.

    Can I simply calculate the Poisson distribution interval for each year as I've done (thereby assuming a 'relatively' constant rate over the course of a single year). The fact that the rate increases over the entire study period doesn't necessarily violate the 'constant rate' assumption of a...
  5. Q

    95% CI for rare incidence rate increasing in time.

    I have a plot of 10 incidence rates across time (see picture). I want to calculate the 95% confidence interval for each rate. It would be easiest to just do a normal distribution calculation, but I'm concerned this is not applicable here. For one, they are rare events. I thought to do a poisson...
  6. Q

    P values from 95% CI using poisson distribution

    Hi, Hope I'm in the best place for an answer :) I have a study across 10 years. I have an incidence rate that was calculated for each year along with the 95% confidence interval using a Poisson distribution. My question is how do a get p-values for pairwise comparisons? I understand I can say...