The effects of the interventions (between-group differences) will be calculated using linear mixed models by using interaction terms (group allocation versus time), which is equivalent to the between-group differences.
The intervention (between-group) effect for change in weight was of a medium size ds = 0.57.
This equated to a medium-sized intervention (between-group) effect on the change in energy intake, ds = 0.5.
The intervention (between-group) effect on change in self-reported weight at six months was of a medium size ds = 0.48.
Also the number of analgesic administrations was significantly lower in the II phase interventions group (between-groups effect of intervention, P < 0.001; between-groups effect of time-intervention interaction, P < 0.001; see Figure 3).
Then analysis will be applied to compare the effects of intervention between groups.
a) P values for effect of intervention between groups (repeated-measurements ANOVA adjusted by baseline values).
Comparisons of mean values at baseline and after the intervention between groups were performed by unpaired t-test.
However, research into differences in effectiveness of the intervention between groups of patients with different characteristics (e.g. differences in personality and demographic and medical characteristics) is scarce.
To determine whether video dance induces greater changes in health indicators, compared to controls, we will compare change from baseline to post intervention between groups.
