+ Reply to Thread
Results 1 to 5 of 5

Thread: Need help picking a statistical procedure

  1. #1
    Points: 1,436, Level: 21
    Level completed: 36%, Points required for next Level: 64

    Posts
    3
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Need help picking a statistical procedure




    Hello all,
    We have collected quite a bit of data and we would like to write it up as a study, but we are having trouble determining which statistical procedure is the most appropriate. See what you all think:

    Over the course of a 15 week sport season, we collected 2 separate physical performance measures once each week for each of the athletes (n=42). We now want to look at the changes that occur in those physical performance measures across the season. We have the 2 different physical performance measures (measured 15 times) as the dependent variables and we have time (weeks), games played, innings played, year in school (freshman-senior), and weight room training load volumes as independent variables. What statistical procedures do you suggest? Thanks for your input.

  2. #2
    TS Contributor
    Points: 14,811, Level: 78
    Level completed: 91%, Points required for next Level: 39
    Miner's Avatar
    Location
    Greater Milwaukee area
    Posts
    1,171
    Thanks
    34
    Thanked 405 Times in 363 Posts

    Re: Need help picking a statistical procedure

    This appears to be a longitudinal repeated measures study with covariates.

  3. #3
    Points: 1,436, Level: 21
    Level completed: 36%, Points required for next Level: 64

    Posts
    3
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Need help picking a statistical procedure

    Quote Originally Posted by Miner View Post
    This appears to be a longitudinal repeated measures study with covariates.
    So RM ANCOVA?

  4. #4
    TS Contributor
    Points: 14,811, Level: 78
    Level completed: 91%, Points required for next Level: 39
    Miner's Avatar
    Location
    Greater Milwaukee area
    Posts
    1,171
    Thanks
    34
    Thanked 405 Times in 363 Posts

    Re: Need help picking a statistical procedure

    That should work.

  5. #5
    Points: 3,457, Level: 36
    Level completed: 72%, Points required for next Level: 43

    Posts
    156
    Thanks
    42
    Thanked 43 Times in 40 Posts

    Re: Need help picking a statistical procedure


    RM ANOVA and ANCOVA make assumptions (e.g. sphericity) that are very unlikely to be met in a longitudinal study. Multilevel models are a better option. Or generalized estimating equations.

    Also, the time to figure out your statistics is before you start collecting data.

+ 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