Introduction to Analysing Repeated Measures Data
Training session with Dr Helen Brown, Senior Statistician, at The Roslin Institute, March 2016.
************************************************
These training sessions were given to staff and research students at the Roslin Institute. The material is also used for the Animal Biosciences MSc course taught at the Institute.
************************************************
*Recommended YouTube playback settings for the best viewing experience:  1080p HD
************************************************
Content:
Covariance pattern model
- Observations on same patient assumed to have a specific pattern of covariance across a time effect (eg visit)
- Residual covariance matrix, R, ‘blocked’ by patients:

Covariance structures for Ri (4 periods)

Separate covariances for treatment groups
- e.g.  First three patients receive A, B, A with measurements at three time points (compound symmetry structures).

Selecting the covariance pattern
- Significance testing
- Measuring model fit