intraclass

  1. P

    Intraclass Correlation Coefficient: Single Measures or Average Measures

    For our research we use Intraclass correlations (ICC's), but I can't figure out wether I need to use the Single Measures-value or the Average Measures-value. Our study: 10 children with a rare metabolic disease wore an activity tracker (kind of fitbit) for two weeks, with the first week being...
  2. D

    Intraclass correlations

    I am doing a study to investigate the interrater reliability of a rating scale. I solicited 100 teachers to complete a rating scale on a child and then have another teacher complete the same rating scale on the same child. The rating scale uses ordinal ratings (i.e., 0, 1, 2, 3) and consists...
  3. C

    Correlation not reflecting actual similarity of values

    Hello, I have 2 vector of data which correspond to rating in a test. Subjects perform the test and rate their result (from 0 to 10) and the next week they repeat the same procedure. The values are "very similar" but correlation does no actually reflect it. Since all values are around 8...
  4. R

    inter-rater agreement: uses of kappa, pearson's, and intraclass coefficients

    Hi everyone: I really appreciate all of the great posts on here! I'm trying to wrap my head around a couple of things. First of all, a bit of background: I am trying to "validate" a questionnaire that was developed against a "gold standard": medical records. The variables are all...