Table 3

Characteristics of the individuals and cancers occurring within 3 years of a colonoscopy undertaken between 2001 and 2007

Cancers occurring in individuals
>6 months after colonoscopy≤ 6 months after colonoscopyAll cancers
Characteristicn%n%n
Median age at diagnosis (IQR)72 (64–69)74 (65–81)72 (64–79)
Sex  
 Male26258.129 75591.932 380
 Female23469.223 23790.225 583
IMD income category at diagnosis
 Most affluent10098.710 54891.311 557
 211018.811 45491.212 555
 39868.011 38292.012 368
 410128.610 74291.411 754
 Most deprived8638.9886691.19729
Charlson comorbidity score at diagnosis
 030427.537 43192.540 473
 187310.6736689.48239
 264810.1574589.96393
 ≥340814.3245085.72858
Previous in-patient hospital episode for Crohn's disease
 No47438.352 49691.757 239
 Yes22831.549668.5724
Previous in-patient hospital episode for ulcerative colitis
 No43927.851 94392.256 335
 Yes57935.6104964.41628
Previous in-patient hospital episode for diverticular disease
 No29547.237 97192.840 925
 Yes201711.815 02188.217 038
Number of colonoscopic investigations in time period
 142237.750 66992.354 892
 >174824.4232375.63071
Dukes’ stage at diagnosis
 A7329.5696890.57700
 B10296.315 21393.716 242
 C9947.013 17893.014 172
 D68610.2607189.86757
 Unknown153011.711 56288.313 092
Tumour site
 Rectal/sigmoid colon18976.726 34993.328 246
 Splenic flexure/descending colon2067.4258092.62786
 Transverse colon2768.6292391.43199
 Right colon18599.817 91694.019 055
 Colon NOS73315.7394484.34677
 Total49718.652 99291.457 963
  • IMD, Index of Multiple Deprivation; NOS, not otherwise specified.