Table 1.
Demographics and tumor characteristics of men in the 5-yr follow-up study in the National Prostate Cancer Register of Sweden who were placed on initial active surveillance
| Characteristic | Finding |
|---|---|
| Men, n (%) | 1729 (100) |
| Year of diagnosis, n (%) | |
| 2003 | 260 (15) |
| 2004 | 326 (19) |
| 2005 | 359 (21) |
| 2006 | 416 (24) |
| 2007 | 368 (21) |
| Age, yr, median (IQR) | 64.0 (60.0–67.0) |
| Clinical T stage, n (%) | |
| T1ab | 173 (10) |
| T1c | 1324 (77) |
| T2 | 232 (13) |
| Biopsy Gleason score, n (%) | |
| ≤6 | 1613 (93) |
| 7 | 116 (7) |
| Serum PSA, ng/ml, median (IQR) | 5.6 (4.1–8.0) |
| Biopsy cores, n (%) | |
| ≤6 | 514 (30) |
| 7–9 | 280 (16) |
| ≥10 | 240 (14) |
| Missing data | 695 (40) |
| Positive cores, n (%) | |
| ≤2 | 899 (52) |
| ≥3 | 135 (8) |
| Missing data | 695 (40) |
| Risk category, n (%)* | |
| Very low | 644 (37) |
| Low, not very low | 757 (44) |
| Intermediate | 328 (19) |
| Comorbidity, n (%) | |
| CCI 0 | 1425 (82) |
| CCI 1 | 165 (10) |
| CCI ≥2 | 139 (8) |
| Marital status, n (%) | |
| Single | 507 (29) |
| Married | 1222 (71) |
| Education, n (%)** | |
| Low | 569 (33) |
| Middle | 747 (43) |
| High | 403 (23) |
| Missing data | 10 (1) |
CCI = Charlson comorbidity index; IQR = interquartile range; PSA = prostate-specific antigen.
*
Risk categories modified from the National Comprehensive Cancer Network Clinical Practice Guidelines in Oncology: very low risk = T1c, Gleason ≤6, PSA <10 ng/ml, two or fewer positive cores; low, not very low risk = T1–2, Gleason ≤6, PSA <10 ng/ml; not very low, intermediate risk = T1–2, Gleason 7 and/or 10≤ PSA <20 mg/ml.
**
Educational level: low = compulsory school, ≤9 yr; middle = upper secondary school, 10–12 yr; high = college or university, ≥13 yr.