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Number (percentage) of the correctly diagnosed isthmus types and sensitivity values (95% confidence intervals) for endoscope. Different superscript letters in the same column mean significant differences between isthmus types (P less than 0.05).
| Isthmus type/Estimation | Correct endoscopic examination | Sensitivity |
|---|---|---|
| Type I | 7 (58.3%)a | 58.3% (27.6-84.8%) |
| Band-shaped | 5 (25.0%)b | 20.0% (6.8-40.7%) |
