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Table 4 Survey results regarding the degree of xerostomia at 12 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%) 4.896 0.000
Mild (G2) 18 (56.3%) 6 (18.2%)
Moderate (G3) 4 (12.5%) 19 (57.%)
Severe (G4) 2 (6.2%) 8 (24.2%)