|
Sexual Behavior and PSA Concentrations among US Men (Age 40 – 59), NHANES 2001 – 2004 |
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| Variable |
n |
Predicted margin geometric mean PSA (ng/ml) |
p-value |
Predicted margin percent free PSA |
p-value |
|
|
|||||
| Age at first intercourse (years) |
1185 |
||||
| ≤ 15 |
400 |
0.80 (0.73 to 0.89) |
Reference |
30.3 (28.6 to 32.0) |
Reference |
| 16 – 18 |
476 |
0.81(0.76 to 0.87) |
0.833 |
31.1 (29.5 to 32.6) |
0.561 |
| ≥ 19 |
309 |
0.82 (0.75 to 0.90) |
0.802 |
31.3 (29.6 to 32.9) |
0.417 |
| Number of lifetime sexual partners |
1169 |
||||
| 0 – 3 |
268 |
0.83 (0.76 to 0.91) |
Reference |
31.0 (29.2 to 32.7) |
Reference |
| 4 – 5 |
181 |
0.94 (0.84 to 1.05) |
0.072 |
31.3 (29.1 to 33.6) |
0.820 |
| 6 – 10 |
268 |
0.73 (0.68 to 0.79) |
0.069 |
31.4 (29.4 to 33.4) |
0.783 |
| 11 – 20 |
193 |
0.91 (0.78 to 1.05) |
0.345 |
29.2 (26.6 to 31.7) |
0.317 |
| 20 + |
259 |
0.73 (0.66 to 0.80) |
0.072 |
31.4 (29.0 to 33.9) |
0.767 |
| Number of sexual partners in the past year |
1190 |
||||
| 0 |
155 |
0.78 (0.68 to 0.88) |
Reference |
30.5 (28.1 to 32.9) |
Reference |
| 1 |
854 |
0.82 (0.78 to 0.87) |
0.471 |
31.1 (30.0 to 32.1) |
0.703 |
| ≥ 2 |
181 |
0.79 (0.69 to 0.90) |
0.916 |
30.3 (27.4 to 33.1) |
0.882 |
| Number of sexual partners in the past 30 days* |
194 |
||||
| 0 |
29 |
0.76 (0.58 to 1.00) |
Reference |
30.8 (25.6 to 36.1) |
Reference |
| 1 |
95 |
0.77 (0.65 to 0.92) |
0.914 |
29.9 (27.1 to 32.6) |
0.734 |
| ≥ 2 |
70 |
0.88 (0.70 to 1.11) |
0.392 |
29.4 (24.1 to 34.7) |
0.696 |
| Have you had sex without a condom in the past 30 days?† |
161 |
||||
| Yes |
119 |
0.76 (0.66 to 0.88) |
Reference |
30.8 (27.8 to 33.7) |
Reference |
| No |
42 |
1.15 (0.81 to 1.63) |
0.029 |
24.7 (19.0 to 30.3) |
0.031 |
| Are you circumcised? |
1211 |
||||
| Yes |
837 |
0.82 (0.77 to 0.86) |
Reference |
31.1 (30.0 to 32.2) |
Reference |
| No |
374 |
0.80 (0.72 to 0.90) |
0.810 |
30.0 (27.3 to 32.7) |
0.348 |
| Self-reported history of STD infection |
1182 |
||||
| Yes |
77 |
0.85 (0.74 to 0.98) |
0.517 |
28.5 (25.2 to 32.0) |
0.151 |
| No |
1105 |
0.81 (0.77 to 0.85) |
Reference |
31.1 (30.1 to 32.1) |
Reference |
|
*Question asked only of men who have had >1 lifetime sexual partner †Question asked only of men who have had at least one sexual partner in the past 30 days and had >1 lifetime sexual partner | |||||
Werny et al. Infectious Agents and Cancer 2007 2:19 doi:10.1186/1750-9378-2-19 |
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