Adding A Covariant to a 2-Way Repeated Measures ANOVA

Hi all,

I have a 2-way repeated measures ANOVA for the following data:

1) There are 2 conditions (data for each condition is within a column) 2) There are 4 time points within each condition (data for each is a row within the matrix) 3) I have 14 repeated measures

I.e. The data is arranged as follows:

Condition 1 Observation Condition 2 Observations

Subject One Time1 Subject One Time1

 Subject Two Time1        Subject Two Time1

 .... .. .....     ........ .......   .

 Subject One Time 2       Subject One Time 2

etc. etc.

The code is as follows:

[p,Table,stats] = anova2(Data,reps);

I would like to add a co-variate term for each subject. However the term is the same for each condition and time point (just a single measure for each subject).

I would really appreciate some advice of how to code / model this data.

Thanks