比如说probit 或线性回归方法。
Sackett DL (October 2001). "Why randomized controlled trials fail but needn't: 2. Failure to employ physiological statistics, or the only formula a clinician-trialist is ever likely to need (or understand!)". CMAJ 165 (9): 1226–37. PMC 81587. PMID 11706914.
http://www.cmaj.ca/cgi/pmidlookup?view=long&pmid=11706914.
http://en.wikipedia.org/wiki/Statistical_significance#cite_note-4
好像从统计上做了说明 。