General characteristics of the study population
| Characteristic | All participants (N=50) | Primary care participants (N=25) | BO registry participants (N=17) | Previous study participants (N=8) |
| Age (years), mean (range) | 63.7 (50–75) | 60.8 (50–75) | 67.0 (56–75) | 66.0 (60–75) |
| Male gender, n (%) | 29 (58.0) | 15 (60.0) | 10 (58.8) | 4 (50.0) |
| White ethnicity, n (%) | 48 (96.0) | 24 (96.0) | 16 (94.1) | 8 (100.0) |
| Highest level of education, n (%) | ||||
| Primary/high school | 11 (22.0) | 5 (20.0) | 2 (11.8) | 4 (50.0) |
| Vocational college | 11 (22.0) | 7 (28.0) | 4 (23.5) | 0 (0.0) |
| College or university | 28 (56.0) | 13 (52.0) | 11 (64.7) | 4 (50.0) |
| Current employment, n (%) yes | ||||
| Working full-time | 14 (28.0) | 12 (48.0) | 1 (5.9) | 1 (12.5) |
| Working part-time | 10 (20.0) | 3 (12.0) | 4 (23.5) | 3 (37.5) |
| Unemployed, looking for work | 1 (2.0) | 1 (4.0) | 0 (0.0) | 0 (0.0) |
| Retired | 25 (50.0) | 9 (36.0) | 12 (70.6) | 4 (50.0) |
| Current GORD symptoms,* n (%) yes | 21 (42.0) | 11 (44.0) | 7 (41.2) | 3 (37.5) |
| Upper endoscopy experience, n (%) yes | 45 (90.0) | 21 (84.0) | 17 (100.0) | 7 (87.5) |
| PPI usage, n (%) yes | 42 (84.0) | 21 (84.0) | 16 (94.1) | 5 (62.5) |
| BO diagnosis, n (%) yes | 17 (34.0) | 0 (0.0) | 17 (100.0) | 0 (0.0) |
| Knowing someone with oesophageal cancer, n (%) yes | 18 (36.0) | 9 (36.0) | 5 (29.4) | 4 (50.0) |
| Participant ELECTRONIC study (screening trial), n (%) yes | 8 (16.0) | 1 (4.0) | 4 (23.5) | 3 (37.5) |
| Participated in population-based cancer screening programmes, n (%) yes | 39 (78.0) | 18 (72.0) | 14 (82.4) | 7 (87.5) |
*Based on a GerdQ32 Score of 8 or higher.
GORD, gastro-oesophageal reflux; PPI, proton pump inhibitor; BO, Barrett’s oesophagus.