Data are from Olson and Hanson (1997). "Using Reiki to manage pain," 
Cancer Prevention and Control, I(2).

Data are before and after pain measurements for 18 participants where 
the treatment was a Reiki touch therapy session. Pain level was determined 
by each participant on two scales, the Likert scale (with possible values 
0 to 5) and the Visual Analogue Scale (with possible values 0 to 10).

Data were taken from the web site OzData at:

   http://www.maths.uq.edu.au/~gks/data/