Table 1 Clinical features of the patients.
Variables | Young (n = 103) | Elder (n = 100) | p value |
|---|---|---|---|
Age (year ± SD) | 34.74 ± 4.94 | 65.50 ± 10.54 | < 0.001 |
Sex, n (%) | 0.657 | ||
Male | 30 (29.13) | 32 (32.00) | |
Female | 73 (70.87) | 68 (68.00) | |
Smoking history, n (%) | 0.059 | ||
Never smoker | 93 (90.29) | 81 (81.00) | |
Current or former smoker | 10 (9.71) | 19 (19.00) | |
Largest tumor size | < 0.001 | ||
< 1 cm | 35 (33.98) | 2 (2.00) | p < 0.05 |
1–2 cm | 61 (59.22) | 48 (48.00) | |
> 2 cm | 7 (6.80) | 50 (50.00) | p < 0.05 |
Tumor location, n (%) | 0.744 | ||
Ipsilateral | 102 (99.03) | 99 (99.00) | |
Bilateral | 1 (0.97) | 1 (1.00) |
