i am a new user of SPSS and fan of statistics.As you can understand, it really surprized me to find out that there is a site like yours, with so much interesting topics in statistics and so much help.It is the first time to post. So here is my problem

"i have two groups of patients with urine stones in the kidney and the upper ureter to be treated with ESWL. The first group is positioned in the supine position,whereas the second group is positioned in the lateral position.The aim of my study is to see if the second group can be treated more efficient than the first group and even more to see if the outcome of the ESWL in each and between groups depends on the location of the stones,i.e.kidney or ureter."

I would be grateful if you could help me to choose the right statistical analysis with SPSS.

with kind regards

TDK