Table 2 Characteristics associated with colorectal cancer mortality post diagnosis and colonoscopy history (deaths by December 31st, 2013, registered in 2003–2013, South Australia (n = 12,906)
Characteristics | Colorectal cancer death n = 3771 | Other death n = 1621 | Alive n = 7514 | Unadjusted SHR (95% CI) * |
|---|---|---|---|---|
Mean age (SD) at diagnosis (years) | 72.2 (13.2) | 78.3 (10.0) | 67.4 (12.6) | 1.13 (1.11–1.16) |
Age at diagnosis (years) | ||||
< 60 | 652 (17.3%) | 68 (4.2%) | 1887 (25.1%) | 1.00 |
60–69 | 781 (20.8%) | 193 (11.9%) | 2118 (28.2%) | 1.00 (0.91–1.11) |
70–79 | 1056 (28.0%) | 495 (30.5%) | 2194 (29.2%) | 1.13 (1.03–1.25) |
> 80 | 1280 (34.0%) | 865 (53.4%) | 1310 (17.5%) | 1.70 (1.55–1.87) |
Sex | ||||
Male | 2014 (53.6%) | 917 (56.6%) | 3881 (53.6%) | 1.00 |
Female | 1745 (46.4) | 703 (43.4%) | 3361 (46.4%) | 1.03 (0.97–1.10) |
Country of birth | ||||
Australia & NZ | 2599 (71.1%) | 1113 (71.1%) | 4980 (68.3%) | 1.0 |
Europe | 957 (26.2%) | 427 (27.3%) | 1700 (23.3%) | 1.03 (0.96–1.11) |
North Africa/ Middle East | 10 (0.3%) | 2 (0.1%) | 22 (0.3%) | 0.99 (0.54–1.82) |
Asia and Pacific Islands | 47 (1.2%) | 15 (1.0%) | 106 (1.5%) | 0.87 (0.66–1.15) |
Americas | 14 (0.4%) | 2 (0.1%) | 23 (0.3%) | 1.35 (0.80–2.28) |
Africa (other) | 32 (0.9%) | 7 (0.5%) | 461 (6.3%) | 0.66 (0.46–0.95) |
Indigenous | ||||
No | 3653 (99.5%) | 1576 (99.9%) | 6843 (99.7%) | 1.00 |
Yes | 17 (0.5%) | 2 (0.1%) | 19 (0.3%) | 1.85 (1.12–3.05) |
Remoteness | ||||
Major city | 2663 (70.6%) | 1199 (74.0%) | 5334 (71.0%) | 1.00 |
Inner regional | 386 (10.2%) | 156 (9.6%) | 859 (11.4%) | 0.95 (0.85–1.05) |
Outer regional and remote | 722 (19.2%) | 266 (16.4%) | 1319 (17.6%) | 1.11 (1.02–1.20) |
SES disadvantage quintile | ||||
1st (most disadvantage) | 1020 (27.1%) | 406 (25.1%) | 1785 (23.8%) | 1.00 |
2nd | 838 (22.3%) | 346 (21.4%) | 1687 (22.5%) | 0.92 (0.84–1.00) |
3rd | 689 (18.3%) | 365 (22.5%) | 1427 (19.0%) | 0.84 (0.77–0.93) |
4th | 699 (18.6%) | 283 (17.5%) | 1442 (19.2%) | 0.89 (0.81–0.98) |
5th (least disadvantage) | 519 (13.8%) | 220 (13.6%) | 1165 (15.5%) | 0.82 (0.73–0.91) |
Local Health Network code | ||||
Country Health SA | 1211 (32.1%) | 474 (29.2%) | 2428 (32.3%) | 1.00 |
Central Adelaide | 1122 (29.8%) | 527 (32.5%) | 2127 (28.3%) | 1.00 (0.92–1.09) |
Northern Adelaide | 755 (20.0%) | 273 (16.8%) | 1472 (19.6%) | 1.04 (0.95–1.14) |
Southern Adelaide | 683 (18.1%) | 347 (21.4%) | 1484 (19.8%) | 0.90 (0.82–0.98) |
Years survived on Dec 31st 2013 Median (IQR) | 2.8 (0.9–5.1) | 2.8 (0.9–5.1) | 4.4 (1.9–7.2) | |
Cancer staging (max spread) | ||||
Local | 439 (18.1%) | 547 (59.6.%) | 2494 (58.2%) | 1.00 |
Regional | 783 (32.2%) | 277 (30.2%) | 1393 (32.5%) | 3.05 (2.72–3.42) |
Distant | 1208 (49.7%) | 94 (10.2%) | 401 (9.4%) | 11.41 (10.24–12.71) |
Pre-diagnosis colonoscopy | ||||
No | 2505 (66.4%) | 899 (55.5%) | 4790 (63.8%) | 1.00 |
Yes | 1266 (33.6%) | 722 (44.5%) | 2724 (36.3%) | 0.83 (0.78–0.89) |
Follow-up time from initial colonoscopy to diagnosis | ||||
< 1 year | 883 (69.8%) | 529 (73.3%) | 1577 (57.9%) | 1.00 |
> =1 year | 383 (30.3%) | 193 (26.7%) | 1147 (42.1%) | 0.82 (0.73–0.93) |
Pre-diagnostic colonoscopy examinations | ||||
One | 1023 (80.8%) | 560 (77.6%) | 1991 (73.1%) | 1.00 |
Two | 179 (14.1%) | 119 (16.5%) | 446 (16.4%) | 0.90 (0.77–1.05) |
> = 3 | 64 (5.1%) | 43 (6.0%) | 287 (10.5%) | 0.63 (0.49–0.81) |