From: Prostate-specific antigen at or before age 50 as a predictor of advanced prostate cancer diagnosed up to 25 years later: A case-control study
Total PSA (ng/ml)
Cases
Controls
Odds ratio
95% CI
0.00–0.50
22
204
Reference
-
0.51–1.00
42
165
2.37
1.33, 4.23
1.01–2.00
45
55
7.25
3.89, 13.5
2.01–3.00
25
10
21.5
8.58, 53.8
3.01+
27
2
120
26.0, 557