Group

Sex ratio

(M/F, cases)

Age

(years, $\overline{x}$ ± s)

Mean duration of disease

(month, $\overline{x}$ ± s)

Microwave ablation group

20/23

58.4 ± 12.1

16.9 ± 4.5

Surgical group

19/20

57.7 ± 11.8

15.4 ± 3.7

t-value

0.26

1.64

P-value

0.79

0.11