Characteristics of the study population
| All cases | Major resections | |||
|---|---|---|---|---|
| Variable | n=209 968 | n=142 663 | ||
| Age group (years) | ||||
| <60 | 38 681 | 18.4% | 28 661 | 20.1% |
| 60–70 | 52 643 | 25.1% | 39 271 | 27.5% |
| 70–80 | 70 659 | 33.7% | 49 426 | 34.6% |
| >80 | 47 985 | 22.9% | 25 305 | 17.7% |
| Sex | ||||
| Male | 116 050 | 55.3% | 79 276 | 55.6% |
| Female | 93 918 | 44.7% | 63 387 | 44.4% |
| Deprivation quintile | ||||
| 1 (least deprived) | 41 557 | 19.8% | 29 059 | 20.4% |
| 2 | 45 121 | 21.5% | 31 302 | 21.9% |
| 3 | 44 478 | 21.2% | 30 330 | 21.3% |
| 4 | 41 076 | 19.6% | 27 390 | 19.2% |
| 5 (most deprived) | 34 488 | 16.4% | 22 529 | 15.8% |
| Missing | 3248 | 1.5% | 2053 | 1.4% |
| Dukes' stage | ||||
| A | 20 390 | 9.7% | 16 967 | 11.9% |
| B | 53 443 | 25.5% | 49 822 | 34.9% |
| C | 53 778 | 25.6% | 49 150 | 34.5% |
| D | 33 654 | 16.0% | 12 653 | 8.9% |
| Missing | 48 703 | 23.2% | 14 071 | 9.9% |
| Tumour site | ||||
| Colon | 148 722 | 70.8% | 104 681 | 73.4% |
| Rectum | 61 246 | 29.2% | 37 982 | 26.6% |
| Primary procedure | ||||
| Major resection | 142 663 | 67.9% | 142 663 | 100.0% |
| Local excision | 7399 | 3.5% | ||
| Bypass | 968 | 0.5% | ||
| Stoma | 7899 | 3.8% | ||
| Stent | 2025 | 1.0% | ||
| No surgical procedure | 49 014 | 23.3% | ||
| Admission method | ||||
| Elective | 144 645 | 68.9% | 109 344 | 76.6% |
| Emergency | 65 323 | 31.1% | 33 319 | 23.4% |
| Screening status | ||||
| Symptomatic | 207 941 | 99.0% | 140 965 | 98.8% |
| Screen detected | 2027 | 1.0% | 1698 | 1.2% |
| Year | ||||
| 2001 | 18 735 | 8.9% | 12 949 | 9.1% |
| 2002 | 25 397 | 12.1% | 17 383 | 12.2% |
| 2003 | 25 880 | 12.3% | 17 587 | 12.3% |
| 2004 | 26 799 | 12.8% | 18 068 | 12.7% |
| 2005 | 27 340 | 13.0% | 18 542 | 13.0% |
| 2006 | 28 011 | 13.3% | 18 841 | 13.2% |
| 2007 | 28 493 | 13.6% | 19 335 | 13.6% |
| 2008 | 29 313 | 14.0% | 19 958 | 14.0% |
| Annual Trust workload* | ||||
| Low | 66 320 | 31.6% | 44 928 | 31.5% |
| Medium | 74 579 | 35.5% | 50 717 | 35.6% |
| High | 69 069 | 32.9% | 47 018 | 33.0% |
| Trust ECMC status† | ||||
| No | 182 599 | 87.0% | 124 834 | 87.5% |
| Yes | 27 369 | 13.0% | 17 829 | 12.5% |
*Annual Trust workload (number of patients with CRC managed) was categorised as: low (≤150), medium (151–250), high (>250).
†Trust ECMC status was categorised as yes or no according to the list of centres provided on the ECMC website (http://www.ecmcnetwork.org.uk/network-centres).
CRC, colorectal cancer; ECMC, Experimental Cancer Medicine Centre.