Variable RFA (N/%) Open surgery (N/%) P-values
Cases 65/69.9% 28/30.1% _
Age, years 0.981
>65years 35/53.8% 15/53.6%
<65years 30/46.2% 13/46.4%
Gender 0.535
Male 64/98.5% 27/96.4%
Female 1/1.5% 1/3.6%
Smoking status 0.002
Smoker 36/55.4% 18/64.3%
Non-smoker 29/44.6% 10/35.7%
Alcohol use 0.309
Yes 32/49.2% 17/60.7%
No 33/50.8% 11/39.3%
T stage 0.025
T1a 48/73.8% 14/50%
T1b 17/26.2% 14/50%
Grade 0.010
Highly differentiated 53/81.5% 15/53.6%
Moderately differentiated 11/16.9% 13/46.4%
Poorly differentiated 1/1.5% 0/0%
Anterior commissure 0.286
Invasion 34/52.3% 18/64.3%
Not invasion 31/47.7% 10/35.7%
Resection margins
Positive 2/3.1% 0/0% 0.348
Negative 63/96.9% 28/100%