Table 4. Odds of Advanced Pathology in Right vs Left Colon, Stratified by Polyp Size.
| Right colon | Left colon | |||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| n | % | n | % | OR (95% CI) | Adjusted OR (95% CI)a | |
| All polypsb | ||||||
| HGD/AdenoCa (mm) | ||||||
| <6 | 225 | 38.5 | 167 | 15.1 | 5.27 (4.06–6.82) | 4.10 (3.15–5.34) |
| 6–9 | 183 | 31.3 | 245 | 22.2 | 2.92 (2.27–3.75) | 1.98 (1.45–2.42) |
| >9 | 177 | 30.3 | 692 | 62.7 | Reference | Reference |
| AdNeo (mm) | ||||||
| <6 | 1315 | 39.1 | 794 | 18.3 | 4.89 (4.34–5.51) | 4.39 (3.85–5.01) |
| 6–9 | 1262 | 37.6 | 1238 | 28.5 | 3.01 (2.69–3.36) | 2.19 (1.93–2.48) |
| >9 | 784 | 23.3 | 2317 | 53.3 | Reference | Reference |
| AdenoCa (mm) | ||||||
| <6 | 43 | 43.4 | 44 | 16.9 | 5.80 (3.27–10.24) | 4.28 (2.42–7.61) |
| 6–9 | 26 | 26.3 | 39 | 15.0 | 3.95 (2.10–7.41) | 2.42 (1.29–4.55) |
| >9 | 30 | 30.3 | 178 | 68.2 | Reference | Reference |
| All patients with isolated right or left colonic polyps (per-patient analyses) (mm)c | ||||||
| HGD/AdenoCa (mm) | ||||||
| <6 | 90 | 31.5 | 87 | 15.5 | 3.47 (2.4–5.0) | – |
| 6–9 | 93 | 32.5 | 130 | 23.1 | 2.40 (1.70–3.4) | – |
| >9 | 103 | 36.0 | 346 | 61.5 | Reference | – |
| AdNeo (mm) | ||||||
| <6 | 675 | 37.1 | 430 | 17.9 | 4.51 (3.83–5.30) | – |
| 6–9 | 698 | 38.4 | 697 | 29.0 | 2.87 (2.47–3.34) | – |
| >9 | 444 | 24.4 | 1276 | 53.1 | Reference | – |
| AdenoCa (mm) | ||||||
| <6 | 24 | 48.0 | 29 | 21.8 | 5.09 (2.29–11.3) | – |
| 6–9 | 13 | 26.0 | 24 | 18.0 | 3.33 (1.36–8.14) | – |
| >9 | 13 | 26.0 | 80 | 60.2 | Reference | – |
a
Adjusted for patient age and sex.
b
n = 114,354 right colonic polyps, n = 119,060 left colonic polyps.
c
n = 49,566 patients with isolated right colonic polyps, n = 62,075 patients with isolated left colonic polyps.