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Sample statistics of each group
| Group | Mean age (year) | Sample number |
|||||
| Men | Women | I stage/low grade | II stage/medium grade | III stage/high grade | IV stage | ||
| ESCC | 59 | 21 | 9 | ||||
| DYS | 49 | 13 | 14 | 19 | 7 | 1 | 0 |
| BCH | 51 | 15 | 25 | 32 | 8 | 0 | |
| HC | 47 | 22 | 41 | ||||
Stage for ESCC and DYS, grade for BCH. There were 25 ESCC postoperative control (PO) samples out of 30 ESCC patients. ESCC: esophageal squamous cell carcinoma; DYS: dysplasia; BCH: basal cell hyperplasia; HC: healthy control
