Table 1.
Demographic and Clinical Characteristics of Patients with and Without Circulating Tumor Cells
| No. of Patients (%) | P | |||
|---|---|---|---|---|
| Total N=50 |
CTC-Negative (N=23) | CTC-Positive (N=27) | ||
| Sex | ||||
| Male | 30 (60) | 13 (57) | 17 (63) | 0.64 |
| Female | 20(40) | 10(43) | 10(37) | |
| Age | ||||
| <40 | 6(12) | 2 (9) | 4 (15) | 0.60 |
| 40–60 | 36 (72) | 16 (70) | 20 (74) | |
| >60 | 8 (16) | 5 (22) | 3 (11) | |
| Biopsy history | ||||
| Positive | 10 (20) | 5 (22) | 5 (19) | 1.0 |
| Family history | ||||
| With positive family history | 16(32) | 9(39) | 7(26) | 0.32 |
| Smoking status | ||||
| Positivea | 25 (50) | 12 (52) | 13 (48) | 0.77 |
| Stage | ||||
| III | 28 (56) | 12 (52) | 16 (59) | 0.86 |
| IVa | 15 (30) | 8 (35) | 7 (26) | |
| IVb | 7(14) | 3(13) | 4(15) | |
| T stage | ||||
| T2 | 6 (12) | 2 (9) | 4 (15) | 0.66 |
| T3 | 28 (56) | 12 (52) | 16 (59) | |
| T4 | 16 (32) | 9 (39) | 7 (26) | |
| N stage | ||||
| N0–N1 | 11 (22) | 6 (26) | 5 (19) | 0.66 |
| N2 | 32 (64) | 14 (61) | 18 (67) | |
| N3 | 7 (14) | 3 (13) | 4 (15) | |
Note: aIncludes both former and current smokers.