AK, perhaps you didn't notice that the material you posted to me contained no scientific data at all - just some descriptive info about the study:
Background
Methods
Results
Conclusions
Author Affiliations
Aaron Folsom, Kristin Anderson, Andrew Flood, David Jacobs, DeAnn Lazovich, or Julie Ross (U of MN); James Cerhan, Celine Vachon, Janet Olson, and Paul Limburg (Mayo Clinic). And at the top:
Jaakko Mursu, PhD; Kim Robien, PhD; Lisa J. Harnack, DrPH, MPH; Kyong Park, PhD; David R. Jacobs Jr, PhD
Here's some related material which you might find interesting, informative, and full of scientific data as well.
Can vitamin D help prevent certain cancers and other diseases such as type 1 diabetes, cardiovascular disease, and certain autoimmune and chronic diseases? To answer these questions and more, UCSD School of Medicine and GrassrootsHealth bring you this innovative series on vitamin D deficiency. Join nationally recognized experts as they discuss the latest research and its implications.
In this program, Cedric Garland, Dr. PH, discusses the expected vitamin D serum level for cancer prevention. Series: Vitamin D Deficiency – Treatment and Diagnosis [2/2009] [Health and Medicine] [Professional Medical Education][Show ID: 15767]
It's a longish video, but well worth your time if you watch the whole thing.