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These studies were not modern studies with a control group. According to Jones, the death-rate in case of cancer would remain constant over time (''the death rate for all kinds of cancer remains nearly fixed from the moment when cancer is identified'' page 314). This theory was also known as "The Hardin Jones Principle" and was cited by Linus Pauling in 1989. However, it is known today that this simple theory is invalid. Different cancers have their own and different curve of survival.
These studies were not modern studies with a control group. According to Jones, the death-rate in case of cancer would remain constant over time (''the death rate for all kinds of cancer remains nearly fixed from the moment when cancer is identified'' page 314). This theory was also known as "The Hardin Jones Principle" and was cited by Linus Pauling in 1989. However, it is known today that this simple theory is invalid. Different cancers have their own and different curve of survival.
The description given by Jones is false, if it was to be related to our times. At the end of the fifties, 25% of all breast cancer patients were still alive after 5 years. In industrialised countries of today, this figure amounts to around 80% (USA, year 2003,<ref>Jemal A, Thomas A, Murray T, Thun M. Cancer statistics, 2002. CA Cancer J Clin. 2002: 23-47 Also: Weir HK, Thun MJ, Hankey BF, Ries LA, Howe HL, Wingo PA, Jemal A, Ward E, Anderson RN, Edwards BK Annual report to the nation on the status of cancer, 1975-2000, featuring the uses of surveillance data for cancer prevention and control. J Natl Cancer Inst. 2003 Sep 3;95(17):1276-99</ref>) even considering that breast cancer is detected much earlier today.
The description given by Jones is false, if it was to be related to our times. At the end of the fifties, 25% of all breast cancer patients were still alive after 5 years. In industrialised countries of today, this figure amounts to around 80% (USA, year 2003),<ref>Jemal A, Thomas A, Murray T, Thun M. Cancer statistics, 2002. CA Cancer J Clin. 2002: 23-47 Also: Weir HK, Thun MJ, Hankey BF, Ries LA, Howe HL, Wingo PA, Jemal A, Ward E, Anderson RN, Edwards BK Annual report to the nation on the status of cancer, 1975-2000, featuring the uses of surveillance data for cancer prevention and control. J Natl Cancer Inst. 2003 Sep 3;95(17):1276-99</ref> even considering that breast cancer is detected much earlier today.
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