SPSS nightmare!!! Can anybody help please :)

Hey guys!! sorry to hijack your feed, I am a newbie and just couldn't figure out how to create a new feed / I am snowed under with dissertation that I got all flustered as I needed an answer :colondollar:

sorry. If anyone can help me with this I will be so grateful:
My experiment involved training subjects under two conditions: an occlusion condition (intervention group) and a non-occlusion control group.
Each subject performed 6 weeks of training, 2 days/wk. For each of their 12 sessions, their discomfort score (0-10 scale - we assume it's interval data) was taken pre training and post training. This was performed for both legs. Therefore each subject has 12 pre-post data for each leg (24 items total)We therefore have 1 between subjects factors (Group: intervention versus control)We have 2 within group factors (pre left leg versus post left leg and pre right versus post right) but we also have 12 repeated pairwise comparisons for both these within group factors.In SPSS to analyse the data ANOVA with 1 between subject factor and 2 within subject factors would work if we only look at, for example, the comparisons between pre and post for one given session. I don't know how to set it up so that it looks at the 12 sessions repeatedly. Or should i set up R/L as another between subjects factor? and line up all the data for each subject in 2 columns and code it by group and which leg is being trained, rather than having having 2x24columns of data on one row specific to each subject (24 columns for each pairwise comparison)? i assume if you do this, the data is considered independent, when in fact it is not?Can anyone save me :smile:

???THANKS

Reply 1

Ginger_Nut

What has your supervisor said? First thing I'd do is talk to your supervisor if you haven't already.

I can't really help you much as I don't have my SPSS book in front of me, sorry!

Reply 2

alleycat393

I think you have two questions here. What is the best way to look at the data? And, how do I get SPSS to do it for me?

Talk to your supervisor. They should be able to answer/help you to work out the answer to the first question. If they don't use SPSS, see if there is a statistics support system at your uni and ask them. There are also SPSS tutorials available online

Reply 3

piglet33

I'd also just reply and say Andy Field's book on SPSS was my absolute saviour in my diss (I did a similar thing). One of the PhD guys who was helping me recommended it and I cannot recommend it enough. AMAZING book. It might help you with this!