. Author manuscript; available in PMC: 2007 Nov 27.

Published in final edited form as: Cancer Detect Prev. 2007;31(4):310–315. doi: 10.1016/j.cdp.2007.07.005

Table 2.

Demographics of the prostate cancer cases and controls.

Demographic	Cases (n=411)	Controls (n=397)
Age (years)^a	66 ± 8	62 ± 11
Smoking (pack-years)^a	30 ± 35	22 ± 32
Non-smokers	28%	42%
Light-smokers	33%	31%
Heavy-smokers	39%	28%
Family history of prostate cancer	19%	8%
PSA level (ng/ml)^a,^b	42 ± 437	1.6 ± 1.7
Gleason score = 6^c	59%	NA^d
Gleason score > 6^c	41%	NA

Mean ± Standard Deviation shown for continuous variables.

PSA levels are shown when available (405 cases and 205 controls).

Gleason scores were available for 302 cases.

NA, not applicable