Table 1. PSA measurements of less than 1.5 ng/ml.

(provided with permission of Charles T. Todd Jr., BioReference Laboratories, Inc.)

Age Group	# of men with PSA < 1.5 ng/ml	% of men by age group with PSA < 1.5 ng/ml	Total # Results
41–45	36,121	89.6%	40,306
46–50	54,616	84.1%	64,920
51–55	69,853	76.8%	90,949
56–60	59,195	67.2%	88,034
61–65	45,386	58.1%	78,072
66–70	34,931	51.6%	67,675
71–75	23,742	48.3%	49,185
76–80	16,255	47.1%	34,506
81–85	9,572	46.4%	20,616
86–90	4,562	44.9%	10,154
91–96	1,266	40.1%	3,154
Grand Total	355,499	64.9%	547,571