results don't show comparison group?

I am going through some of the TIS releases showing results of studies. Why don't any of these releases give results experience by either a placebo group, or a group treated with the standard of care? For example:

http://www.tissuetherapies.com/investors/111111TIS%20ASX%20Final%20EU%20Clinical%20Results.pdf

The above release isn't scientific at all. The whole point of studies like this is NOT to document absolute results. The point of the study is to show the incremental improvement over the standard of care, and to prove that this difference was itself statistically significant.