+ Reply to Thread
Results 1 to 2 of 2

Thread: 4 proportions to compare, each with separate N and 95% CI. use ANOVA or what?

  1. #1
    Points: 12, Level: 1
    Level completed: 23%, Points required for next Level: 38

    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Question 4 proportions to compare, each with separate N and 95% CI. use ANOVA or what?




    With the above info, what's the correct way to determine whether the proportions differ significantly? I thought I had a lovely formula that used upper and lower confidence limits and N to calculate the SD and then just pop into an online calculator, but I have no such formula, and am not sure whether that is the correct approach anyway. Any help would be appreciated - thanks.

  2. #2
    Omega Contributor
    Points: 38,303, Level: 100
    Level completed: 0%, Points required for next Level: 0
    hlsmith's Avatar
    Location
    Not Ames, IA
    Posts
    6,993
    Thanks
    397
    Thanked 1,185 Times in 1,146 Posts

    Re: 4 proportions to compare, each with separate N and 95% CI. use ANOVA or what?


    If you are comparing proportions you can use chi-square. If significant you can follow it up with pairwise comparisons of groups and remember to correct you alpha value to address multiplicity.
    Stop cowardice, ban guns!

+ Reply to Thread

           




Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats