Effects of a combination of beta carotene and vitamin A on lung cancer and cardiovascular disease

…, B Valanis, JH Williams Jr…

Index: Bolton, Roger; Burley, Rita E.; Williams, Nigel J. Australian Journal of Chemistry, 1986 , vol. 39, # 4 p. 625 - 634

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Citation Number: 3515

Abstract

A total of 388 new cases of lung cancer were diagnosed during the 73,135 person-years of follow-up (mean length of follow-up, 4.0 years). The active-treatment group had a relative risk of lung cancer of 1.28 (95 percent confidence interval, 1.04 to 1.57; P = 0.02), as compared with