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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%)