[Personality traits of women participating in a breast cancer prevention trial].

We have evaluated the psycho-social factors in women--during menopause with different biological characteristics--who participated in two extensive trials of breast cancer prevention: Diana1 and Tamoxifen. Through the use of a recognized personality test (MMPI, Minnesota Multiphasic Personality Inventory), we observed 500 healthy women who agreed to or refused the health care proposal. The findings show that the women who accept chemical preparations or to modify their dietary habits present different personality traits from those who refuse to adhere.