Outcome <12 weeks (n=60) ≥ 12 weeks
(n=61)
Local recurrence    
Number of events 4 5
Regional recurrence    
Number of events 3 4
Distant metastasis    
Number of events 14 11
Second primary malignancy    
Number of events 9 5
Death    
Number of deaths 19 12
Median follow-up time (mo) 46.2 20.5
mo=month(s)
Table 6: Clinical outcomes based on the timing of neck dissection.