Table 2.

Association between CAC counts and patient characteristics

Characteristics	CACs positive (n = 156)	CACs negative (n = 76)	P‐value
Age
<60 years	94 (67.1%)	46 (32.9%)	0.969
≥60 years	62 (67.4%)	30 (32.6%)
Gender
Male	61 (67.8%)	29 (32.2%)	0.890
Female	95 (66.9%)	47 (33.1%)
Smoking history
No	106 (67.1%)	52 (32.9%)	0.942
Yes	50 (67.6%)	24 (32.4%)
Pathological types
MIA and AIS	52 (71.2%)	21 (28.8%)	0.592
IAC	98 (65.8%)	51 (34.2%)
Nonadenocarcinoma	6 (60.0%)	4 (40.0%)
Nodule size
≤10 mm	34 (65.4%)	18 (34.6%)	0.944
10–20 mm	83 (68.0%)	39 (32.0%)
>20 mm	39 (67.2%)	19 (32.8%)
Nodule type
Solid nodules	58 (63.0%)	34 (37.0%)	0.397
pGGNs	44 (66.7%)	22 (33.3%)
mGGNs	54 (73.0%)	20 (27.0%)

AIS, adenocarcinoma in situ; CACs, circulating genetically abnormal cells; IAC, invasive adenocarcinoma; mGGNs, mixed ground‐glass nodules; MIA, minimally invasive adenocarcinoma; pGGNs, pure ground‐glass nodules.