Table 2.

Analysis of the correlation between CTCs counts with NSCLC clinical stage

Stage	No. of cases (n)	CTC count (mean ± SD)	95% CI	rs	P-value
I	26	49.46 ± 13.34	26.04–80.81	− 0.25	0.015
II	17	23.53 ± 13.32	5.28–52.53
III	16	29.88 ± 13.66	6.29–58.37
IV	30	14.63 ± 4.38	8.42–23.50

CTC circulating tumor cells