Table 1.

Clinical characteristics of prostate cancer patients in the Swedish Watchful Waiting Cohort

Lethal prostate cancerNonlethal prostate cancer
Number186325
Age at diagnosis, y74.1 ± 6.671.5 ± 6.6
Gleason score
 4–639 (21.0)179 (55.1)
 764 (34.4)95 (29.2)
 8–1062 (33.3)26 (8.0)
 Unknown21 (11.3)25 (7.7)
Tumor stage
 T1a43 (23.1)168 (51.7)
 T1b143 (76.9)157 (48.3)