Table 1. Characteristics of prostate cancer cases in the Physicians' Health Study, incidence 1982–1995 and survival 1982–2007.
| Cases (N=500) | |
|---|---|
| Mean age at baseline (±s.d.) | 61.2 (7.6) |
| Mean age at diagnosis (±s.d.) | 68.4 (6.8) |
| Grade at diagnosis (%)a,b | |
| Low grade | 265 (53.0) |
| Moderate grade | 137 (27.4) |
| High grade | 83 (16.6) |
| Tumour stage at diagnosis (%)c | |
| T1/T2 | 303 (60.6) |
| T3/T4 | 156 (31.2) |
| PSA era (%) | |
| Before 1992 | 357 (71.4) |
| 1992 or after | 143 (28.6) |
| Died from prostate cancer (%) | |
| Died | 111 (22.2) |
| Survived | 389 (77.8) |
PSA=Prostate-specific antigen.
a
15 cases missing grade.
b
Low-grade disease: Gleason 2–6 or well differentiated; Moderate grade: Gleason 7 or moderately differentiated; High grade: Gleason 8–10 or poorly differentiated.
c
41 cases missing stage.