Table 1.
Descriptive statistics
| Nodes group 1-10 | Nodes group 11-20 | Nodes group 21+ | Total | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Med | Freq | Mean | Med | Freq | Mean | Med | Freq | Mean | Med | Freq | |
| Nodes removed | 7.1 | 7 | 15.3 | 15 | 27.8 | 26 | 16.6 | 15.0 | ||||
| Positive nodes | 0.1 | 0 | 0.3 | 0 | 0.8 | 0 | 0.4 | 0.0 | ||||
| Age (years) | 64.8 | 65.4 | 65.4 | 65.9 | 64.7 | 64.8 | 65.0 | 65.0 | ||||
| Gleason score | 6.1 | 6 | 6.2 | 6 | 6.4 | 6 | 6.2 | 6.0 | ||||
| PSA | 8.8 | 6.9 | 11.6 | 7.1 | 12.3 | 7.1 | 11.1 | 7.0 | ||||
| T1 stage | 485 (58%) | 756 (55%) | 425 (50%) | 1666 (55%) | ||||||||
| T2 stage | 281 (34%) | 448 (33%) | 288 (26%) | 1017 (33%) | ||||||||
| T3 stage | 67 (8%) | 163 (11.9%) | 133 (14.0%) | 363 (11.9%) | ||||||||
| BCR (1 =yes) | 93 (11%) | 187 (14%) | 79 (9%) | 359 (12%) | ||||||||
| OS (1 =dead) | 19 (2%) | 49 (4%) | 16 (2%) | 84 (3%) | ||||||||
| N | 833 (27%) | 1367 (45%) | 846 (28%) | 3046 (100%) | ||||||||
Note: Med indicates the median of the variable; Freq refers to absolute frequencies (the corresponding percentage frequencies are in italics)