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Table 3 Survey results regarding the degree of xerostomia at 6 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)

8 (25.0%)

0 (0.0%)

4.584

0.000

Mild (G2)

15 (46.9%)

4 (12.1%)

Moderate (G3)

6 (18.7%)

19 (57.6%)

Severe (G4)

3 (9.4%)

10 (30.3%)