Table 2

Analysis of variance for scores in the 'Dry Eye Questionnaire'

Source
df
MS
F
P' values

Within subjects factor (Assessments)
1
0.133
3.221
0.075
Between subjects factor (Groups)
1
8.326
15.369
0.001
Interaction (Assessments and Groups)
1
7.381
178.607
0.001
Error (Within subjects factor)
115
4.133


Error (Between subjects factor)
115
0.542



Greenhouse-Geisser epsilon = 1.000, hence Sphericity Assumed

Telles et al. Head & Face Medicine 2006 2:46   doi:10.1186/1746-160X-2-46