Table 1. Clinical characteristics of the study cohort.

Characteristics	Statistics
Age (years)	58.7±10.6
No. of patients	246
Female, n (%)	114 (46.3)
Male, n (%)	132 (53.7)
No. of nodules, n (%)
Solitary	192 (78.0)
Multiple	54 (22.0)
Scanning features
CT scanning times	3 [2–11]
Follow-up period (days)	354±224

CT, computed tomography.