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Table 5 Survey results regarding the degree of xerostomia at 60 months after RT

From: Clinical observation of submandibular gland transfer for the prevention of xerostomia after radiotherapy for nasopharyngeal carcinoma: a prospective randomized controlled study of 32 cases

Degree of xerostomia

Experimental group

Control group

Z-value

P-value

None (G1)

7 (26.9%)

0 (0.0%)

4.423

0.000

Mild (G2)

15 (57.7%)

6 (23.1%)

Moderate (G3)

3 (11.5%)

16 (61.5%)

Severe (G4)

1 (3.9%)

4 (15.4%)