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Table 3 Distribution of the headache levels measured using the numeric rating scales (NRS) among the patients with postradiation nasopharyngeal necrosis who underwent radical necrectomy followed by reconstruction

From: A curative-intent endoscopic surgery for postradiation nasopharyngeal necrosis in patients with nasopharyngeal carcinoma

Level of NRS Time point (cases)
Before surgery Within 3 months after surgery
0 8 49
1 0 2
2 1 1
3 3 2
4 1 0
5 4 0
6 7 0
7 8 4
8 13 1
9 10 3
10 17 10