Table 3. Proportions of Patients in Surveillance by Dysplasia Status.
| Cases | Controls | |||
|---|---|---|---|---|
|
|
|
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| Dysplasia status | Total n (%)a | In surveillance n (%)b | Total n (%)a | In surveillance (%)b |
| No dysplasia | 17 (44.7) | 9 (52.9) | 80 (79.2) | 46 (57.5) |
| Indeterminate | 3 (7.9) | 1 (33.3) | 7 (6.9) | 6 (85.7) |
| Low-grade dysplasia | 9 (23.7) | 6 (66.7) | 13 (12.9) | 9 (69.2) |
| High-grade dysplasia | 9 (23.7) | 5 (55.6) | 1 (1.0) | 0 (0) |
| Total | 38 (100) | 21 (55.3) | 101 (100) | 61 (60.4) |
NOTE. The most advanced dysplasia found before the 3-year surveillance period or, for persons with <3 years between their diagnosis date and the index date, the dysplasia status from their first endoscopy.
a
Denominator is total cases or total controls.
b
Denominator is the relevant population (eg, cases: no dysplasia in surveillance for 9 of 17; 52.9%).