Table 2.
Univariate analysis of predictor for visibility of the brownish area under less-air condition
| Brownish area | p value | ||
|---|---|---|---|
| Excellent/good ≥ Score 4.0, n = 51 | Average/fair/poor < Score 4.0, n = 50 | ||
| Visibility score of brownish color change of the epithelium, n | |||
| Excellent/good ≥ score 4.0 | 34 | 0 | < 0.0001 |
| Average/fair/poor < score 4.0 | 17 | 50 | |
| Visibility score of dilated IPCLs, n | |||
| Excellent/good ≥ score 4.0 | 46 | 21 | < 0.0001 |
| Average/fair/poor < score 4.0 | 5 | 29 | |
| Macroscopic type, n | |||
| 0-IIa | 1 | 4 | 0.207 |
| 0-IIb | 22 | 15 | |
| 0-IIc | 28 | 31 | |
| Lesion size, n | |||
| > 1.0 cm | 26 | 25 | 1.000 |
| ≤ 1.0 cm | 25 | 25 | |
| Location, n | |||
| Ce | 2 | 0 | 0.219 |
| Ut | 9 | 8 | |
| Mt | 30 | 37 | |
| Lt | 10 | 5 | |
| Cross-sectional circumference, n | |||
| Anterior wall | 9 | 9 | 0.428 |
| Posterior wall | 19 | 26 | |
| Right wall | 10 | 7 | |
| Left wall | 13 | 8 | |
| Depth, n | |||
| EP | 12 | 13 | 1.000 |
| LPM | 34 | 35 | |
| MM | 1 | 1 | |
| SM | 1 | 0 | |
Ce cervical esophagus, EP epithelium, IPCL intrapapillary capillary loop, LPM lamina propria mucosae, Lt lower thoracic esophagus, MM muscularis mucosae, Mt middle thoracic esophagus, SM submucosa, Ut upper thoracic esophagus