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Table 1.

Relationships between epidermal growth factor receptor (EGFR) and p‐EGFR staining

p‐EGFR n EGFR
1+ 2+ 3+
Positive 88 10 53 20 5
Negative 20  3  8  8 1

No correlation was found between the two stainings (P = 0.36). The difference between EGFR and p‐EGFR staining was analyzed by χ2‐test.