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. 2011 Feb 23;6(2):e16914. doi: 10.1371/journal.pone.0016914

Table 1. Characteristics of the study populations.

Phase I Controls Cases
1,266 815
Age at recruitment (Median, Mean,Std) 60.5 (61.3,6.1) 60.4 (60.7,5.8)
Severity of disease a
Non-aggressive - 657
Aggressive - 158
a

Disease aggressiveness was defined as extraprostatic extension (stage C/D) or high histologic grade (Gleason score ≥8).