Table 1.

Correlation of total CTCs and Vim⁺ CTCs in pre-treatment patients with clinical characteristics (n = 61)

Characteristics	n (%)	Total CTCs		P	Vim+ CTCs		P
		≥ 5	< 5		≥ 1	< 1
Age
≥ 60	38 (62)	21	17	0.814	7	31	0.752
< 60	23 (38)	12	11		5	18
Gender
Male	51 (84)	25	26	0.147	11	40	0.684
Female	10 (16)	8	2		1	9
PS
0	8 (13)	4	4	0.856	1	7	0.944
1–2	53 (87)	29	24		11	42
Smoking history
Yes	52 (85)	24	28	0.008	11	41	0.806
No	9 (15)	9	0		1	8
Histology type
SCLC	44 (72)	23	21	0.645	9	35	0.911
ADC	17 (28)	10	7		3	14
TNM stage
III	25 (41)	13	12	0.784	3	22	0.353
IV	36 (59)	20	16		9	27
Liver metastasis
Yes	7 (11)	7	0	0.029	5	2	0.002
No	54 (89)	26	28		7	47
Bone metastasis
Yes	8 (13)	4	4	0.896	1	7	0.944
No	53 (87)	29	24		11	42
Brain metastasis
Yes	3 (5)	2	1	0.884	1	2	0.893
No	58 (95)	31	27		11	47
Treatment response
PR	37 (61)	21	16	0.605	7	30	0.854
SD + PD	24 (39)	12	12		5	19