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 = 6c	59%	NAd
Gleason score > 6c	41%	NA

^aMean ± Standard Deviation shown for continuous variables.

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

^cGleason scores were available for 302 cases.

^dNA, not applicable