Table 3.
Characteristic | Cohort; no. (%) of patients* | p value | |
---|---|---|---|
1996, n = 89 | 2003/04, n = 148 | ||
Age, yr, mean (range) | 66.6 (41–86) | 65.2 (32–92 | 0.18 |
Sex | 0.98 | ||
Female | 35 (39.3) | 58 (39.1) | |
Male | 54 (60.6) | 90 (60.8) | |
Distance from anal verge | 0.036 | ||
Distal (< 5 cm) | 20 (22.4) | 56 (37.8) | |
Mid (5–10 cm) | 46 (51.6) | 56 (37.8) | |
Upper (> 10 cm) | 23 (25.8) | 36 (24.3) | |
Type of resection | 0.57 | ||
Anterior and Hartmann | 52 (58.4) | 92 (62.1) | |
Abdominoperineal | 37 (41.5) | 56 (37.8) | |
Circumferential resection margin | < 0.001 | ||
Positive | 7 (7.8) | 27 (18.2) | |
Negative | 49 (55.0) | 117 (79.0) | |
Unknown | 33 (37.0) | 4 (2.7) | |
Radiotherapy | 0.17† | ||
None | 27 (30.3) | 33 (22.2) | |
Radiotherapy | 62 (69.7) | 115 (77.7) | |
Preoperative | 4 (4.4) | 91 (61.4) | < 0.001‡ |
Postoperative | 58 (65.1) | 24 (16.2) |
Unless otherwise indicated.
p value using 2 categories: radiotherapy and none.
p value using 3 categories: preoperative radiotherapy, postoperative and none.