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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2014 Jul 13;23(10):2066–2077. doi: 10.1158/1055-9965.EPI-14-0322

Table 3. Baseline characteristics of participants.

Characteristics Controls (maximum n=12,005)
Cases ( maximum n=1,806)
n Mean (SD) or % n Mean (SD) or %
Age (years) 12,005 61.6 (5.0) 1,806 62.0 (5.0)
Body mass index (kg/m2) 11,901 27.4 (3.9) 1,787 27.1 (3.6)
Total energy intake (kcal/d) 12,005 2408 (681) 1,806 2398 (679)
Ethnicity
 White 11,843 98.7 1,775 98.3
 Others 88 0.7 21 1.2
 Missing 74 0.6 10 0.5
Family history of prostate cancer
 Yes 608 5.1 139 7.7
 No 10,179 84.8 1,470 81.4
 Missing 1,218 10.1 197 10.9
Diabetes
 Yes 884 7.4 111 6.1
 No 10,448 87.0 1,580 87.5
 Missing 673 5.6 115 6.4
Occupational class
 Managerial 5,843 48.7 851 47.1
 Intermediate 1,814 15.1 272 15.1
 Working 4,152 34.6 656 36.3
 Missing 196 1.6 27 1.5
Smoking status
 Never 4,068 33.9 686 38.0
 Past 6,296 52.4 880 48.7
 Current 1,585 13.2 239 13.2
 Missing 56 0.5 1 0.1
Dietary supplement intake
 Yes 6,027 50.2 938 51.9
 No 5,740 47.8 829 45.9
 Missing 238 2.0 39 2.2
Stage
 Localised - - 1,612 89.3
 Locally advanced - - 184 10.2
 Missing - - 10 0.5
Gleason grade
 Low (2-6) - - 1,204 66.7
 High (7-10) - - 596 33.0
 Missing - - 6 0.3