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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Eur J Cancer Prev. 2014 Mar;23(2):96–109. doi: 10.1097/CEJ.0b013e3283647394

Table 5. Epidemiologic Studies Evaluating Intakes of Lycopene and Tomato Products and Risk of Advanced Prostate Cancer.

Author Sample Size OR/RR (95% CI)* P-trend Confounders Adjusted for

Case Control Studies

Kolonel et al., 2000
USA & Canada Multi-ethnic
1,619 cases (514 advanced)
1,618 controls
Tomatoes 0.96 (0.48-1.93) 0.76 Age, education, ethnicity, geographic area, and energy intake

Amin et al., 2008
Canada
Aggressive cases 188
268 controls
Tomatoes 1.27 (0.72-2.23) 0.39 Age, ethnicity, education, family history of prostate cancer, smoking, and alcohol consumption, sexually transmitted infections, cystitis, and prostatitis.

Agalliu et al., 2011
Canada
Subcohort 1979
Advanced cases 173
Lycopene 0.71 (0.42-1.20) 0.98 Age at baseline, race, BMI, exercise activity, and education

Cohort Studies

Giovannucci et al., 2002
USA
47,365 subjects
2,481 incident cases
12 years of follow-up
Tomato sauce 0.65 (0.42-0.99) 0.02 Age, time period, ancestry, BMI at age 21, and intakes of energy, calcium, phosphorus, fructose, vitamin D, vitamin E, fat, and linolenic acid

Kirsh et al., 2006
USA
29,361 men
1,338 incident cases (520 advanced)
4.2 years follow-up
Lycopene 1.11 (0.83-1.47) 0.80 Age, race, BMI, study center, family history of prostate cancer, smoking status, physical activity, intake of energy, supplemental vitamin E, fat, red meat, history of diabetes, aspirin use, and previous number of screening exams within the follow-up period
Spaghetti/Tomato sauce 0.81 (0.5-1.16) 0.31
Pizza 0.79 (0.56-1.10) 0.12
Lasagna 0.96 (0.70-1.33) 0.92

Takachi et al., 2010
Japan
46,033 subjects
93 advanced cases
321,061 person-years of follow-up
Tomato & tomato products 0.90 (0.49-1.67) 0.89 Age, public health center area, BMI, smoking status, marital status, alcohol consumption, intake of dairy food and soy products, green tea consumption, vitamin supplement use, screening examinations

Key et al., 2007
Europe
966 incident cases
1,064 controls
Lycopene 0.40 (0.19-0.88) 0.05 Smoking status, alcohol intake, BMI, marital status, physical activity, and education
*

Highest vs. Lowest Categories.