Table 1.
Surveillance Colonoscopy Demographics, Findings, and Characteristics of Recommendations at Surveillance
| Patient demographics, colonoscopy information and surveillance recommendations | Preguidelines n = 336 |
Postguidelines n = 343 |
Delayed postguidelines n = 298 |
P-value |
|---|---|---|---|---|
| N (%) | N (%) | N (%) | ||
| Age, mean (SD) | 66 (8) | 65 (8) | 66 (7) | .142 |
| Gender, male | 280 (83) | 280 (82) | 230 (77) | .144 |
| Most recent prior colonoscopy information readily availablea | 261 (78) | 266 (78) | 182 (61) | <.001 |
| Most recent preceding colonoscopy availability | n = 261 | n = 266 | n = 182 | |
| Information sources | ||||
| Colonoscopy report | 250 (96) | 257 (97) | 182 (100) | .024 |
| Pathology report | 68 (26) | 91 (34) | 112 (62) | <.001 |
| Note or record | 15 (6) | 11 (4) | 0 | .193 |
| Letter to patient or physician | 46 (18) | 71 (27) | 108 (59) | <.001 |
| Other | 20 (8) | 14 (5) | 0 | <.001 |
| Surveillance colonoscopyb findings and recommendations | n = 336 | n = 343 | n = 298 | |
| Surveillance colonoscopy findings | ||||
| High-risk adenoma | 75 (22) | 78 (23) | 73 (25) | .876 |
| Low-risk adenoma | 121 (36) | 117 (34) | 103 (35) | .777 |
| No adenoma (or hyperplastic polyps only) | 140 (42) | 148 (43) | 122 (41) | .888 |
| Surveillance recommendation in colonoscopy report | ||||
| “Await pathology report” | 21 (6) | 37 (11) | 175 (59) | <.001 |
| Discrete interval (eg 5 y) | 291 (87) | 271 (79) | 95 (32) | <.001 |
| Range (eg 3–5 y) | 18 (5) | 27 (8) | 26 (9) | .229 |
| No recommendation | 6 (2) | 8 (2) | 2 (1) | .244 |
| Second surveillance interval recommendations among those with documented HRA or LRA at most recent preceding colonoscopyc | n = 109 | n = 128 | n = 58 | |
| Recommendation adherent to guidelines | 73 (67) | 69 (54) | 38 (66) | .089 |
| Recommendation interval too short | 28 (26) | 50 (39) | 15 (26) | .056 |
| Recommendation interval too long | 1 (1) | 1 (1) | 1 (2) | .791 |
| Recommendation interval unknown | 7 (6) | 8 (6) | 4 (7) | 1.000 |
| Second surveillance interval recommendations among those with no HRA or LRA at most recent preceding colonoscopyc -- assuming no prior advanced adenoma or advanced sessile serrated lesion ever (Scenario 1) | n = 152 | n = 138 | n = 124 | |
| Recommendation adherent to guidelines | 121 (80) | 70 (51) | 66 (53) | <.001 |
| Recommendation interval too short | 28 (18) | 63 (46) | 49 (40) | <.001 |
| Recommendation interval too long | 1 (1) | 1 (1) | 3 (2) | .450 |
| Recommendation interval unknown | 2 (1) | 4 (3) | 6 (5) | .227 |
| Second surveillance interval recommendations among those with no HRA or LRA at most recent preceding colonoscopyc -- assuming ≥1 prior advanced adenoma or advanced sessile serrated lesion ever (Scenario 2) | n = 152 | n = 138 | n = 124 | |
| Recommendation adherent to guidelines | 120 (80) | 95 (69) | 92 (74) | .146 |
| Recommendation interval too short | 28 (18) | 26 (19) | 12 (10) | .070 |
| Recommendation interval too long | 2 (1) | 13 (9) | 15 (12) | .0003 |
| Recommendation interval unknown | 2 (1) | 4 (3) | 5 (4) | .346 |
Statistically significant P values are indicated in bold.
1 High-risk adenoma defined as 3 or more adenomas (including sessile serrated adenomas/polyps [SSA/P]), tubular adenomas or SSA/SSP >10 mm, adenoma or SSA/SSP with villous histology or HGD, as well as traditional serrated adenomas.
2 Low-risk adenoma defined as 1–2 tubular adenomas or SSA/SSP <10 mm.
Readily available defined as the presence of the baseline colonoscopy report in the medical record or detailed history on the past colonoscopy reported in the pathology report or as a note in the medical record.
Surveillance colonoscopy defined as first colonoscopy following prior polypectomy.
Adenomas at most recent preceding and first surveillance colonoscopies were classified using information from the pathology report/letter if available. If a pathology report was not available, then information from the colonoscopy report was used.