Table 4

Estimated relative risks and confidence intervals for prostate cancer in Caucasian and African-American men, by activity

CaucasiansAfrican AmericansBoth races
CasesPerson-yearsRRaCICasesPerson-yearsRRCICasesPerson-yearsRRbCI
Nonrecreational activity (NRA)
1. Very active6832,7751.00155,3901.008338,1651.00
2. Moderately active6929,7770.930.66–1.30223,8831.740.90–3.389133,6601.060.79–1.44
3. Inactive176,4341.670.78–2.28108233.741.66–8.44277,2581.731.12–2.67
P for trend0.62<0.010.05
Recreational activity (RA)
1. Much3617,9981.0031,9611.003919,9591.00
2. Moderate6127,6660.920.61–1.39163,2412.960.85–10.237731,9071.100.75–1.61
3. Little or none5722,3090.980.64–1.49284,8953.170.96–10.468527,2041.170.80–1.72
P for trend0.970.080.41
Combined activity (NRA, RA)
(1,1)2713,1851.0031,6491.003014,8341.00
(1,2) or (2,1)3014,8251.090.65–1.8361,7331.750.44–7.033616,5581.150.71–1.87
(1,3) or (2,2) or (3,1)5625,9140.940.60–1.49163,9882.080.60–7.227229,9021.070.70–1.64
(2,3) or (3,2)2810,9330.970.57–1.64122,0542.660.75–9.444012,9871.150.71–1.84
(3,3)134,1151.350.69–2.62106725.861.60–21.47234,7881.891.10–3.27
P for trend0.80<0.010.10
  • a Adjusted for age, education, and family history.

  • b Adjusted for age, education, family history, and race.