Urologic characteristics and sexual behaviors associated with prostate cancer in an african-Caribbean population in barbados, west indies.

A marginally significant trend of increasing risk was found in men with aggressive PC, which could have been a matter of statistical imprecision due to a smaller sample size than that of the group with nonaggressive tumors.

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First coitus before age 16 was associated with an increased likelihood of high-grade PC (OR 1.82; 1.11–2.99), with a clear trend to a reduced risk with older age at the first intercourse ( P -trend = 0.02).

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