I am doing research into psychological methods of pain control and am busily writing up, but have hit a problem...
Most of my data is parametric and is going ok, but apparently VASs for pain should be analysed as if they are non-parametric.
I have pre- and post-intervention VASs for pain intensity, five days of testing and five between-subjects groups (different distraction methods). I would normally do a 2x5x5 repeated measures ANOVA, but can't do this if it is non-parametric. How do you do repeated measures in non-parametric data? Is there an alternative?
PhD is due in about one month and a quarter of my stats need re-run to get this right! What can you suggest?
Also, how do I write up normal distribution? I have eyeballed the data and it is normally distributed, but I need some test or way of writing this up. How could that be done?
All help appreciated ASAP!