Urologic Characteristics and Sexual Behaviors Associated with Prostate Cancer in an African-Caribbean Population in Barbados, West Indies
Table 3
Association between prostate cancer grade and sexual behaviors.
Multivariate-adjusted OR (95% CI)
Low-grade PC OR (95% CI)
High-grade PC OR (95% CI)
All PC cases OR (95% CI)
Age at first sexual intercourse (years)a
<16
1.63 (1.03, 2.60)*
1.82 (1.11, 2.99)*
1.74 (1.20, 2.54)*
16–18
1.28 (0.82, 2.00)
1.66 (1.04, 2.66)*
1.43 (1.00, 2.05)*
19–21
1.25 (0.84, 2.18)
1.50 (0.90, 2.49)
1.36 (0.92, 2.00)
>21
1.0 (reference)
1.0 (reference)
1.0 (reference)
-trend = 0.06
-trend = 0.02
-trend = 0.004
Lifetime no. of sexual partnersb
0–3
1.0 (reference)
1.0 (reference)
1.0 (reference)
4–9
1.04 (0.74, 1.46)
1.05 (0.74, 1.48)
1.00 (0.76, 1.31)
10–20
1.21 (0.82, 1.78)
1.16 (0.78, 1.73)
1.14 (0.83, 1.56)
>20
1.09 (0.64, 1.87)
1.74 (1.06, 2.85)*
1.35 (0.89, 2.04)
-trend = 0.65
-trend = 0.02
-trend = 0.10
Sexually transmitted infectionc
1.00 (0.76, 1.31)
1.01 (0.77, 1.33)
1.01 (0.82, 1.26)
OR: odds ratio; CI: confidence interval.
*
, based on logistic regression analyses adjusted for age, marital status, religion, lifetime occupation, family history of PC, and waist-hip ratio.
aSample size for low-grade PC: 412; high-grade PC: 373; all PC cases: 825; controls: 808.
bSample size for low-grade PC: 349; high-grade PC: 327; all PC cases: 707; controls: 708.
cSample size for low-grade PC: 476; high-grade PC: 426; all PC cases: 948; controls: 930.
