Table 2 Univariate analysis of predictor for visibility of the brownish area under less-air condition
| Â | 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 |  |