Retrospective Study
Copyright ©The Author(s) 2024.
World J Clin Cases. Jul 6, 2024; 12(19): 3791-3799
Published online Jul 6, 2024. doi: 10.12998/wjcc.v12.i19.3791
Table 1 Demographic characteristics, lesion distribution and size in two groups, n (%)

CEUS group
Control group
χ2/t value
P value
Age68.0±11.068.1±9.60.0950.93
Gender0.0010.96
    Male87 (73.7)88 (73.9)
    Female31 (26.3)31 (26.1)
Smoking history68 (57.6)69 (58)0.0010.96
Location1.9970.37
    Upper leaf44 (37)42 (35.6)
    Middle leaf30 (25.2)39 (33.1)
    Lower leaf45 (37.8)37 (31.4)
Diameter (mm)43.1 ± 15.842.0 ± 14.00.2820.58
    1-5 cm83 (50.6)81 (49.4)0.1430.71
    ≥ 5 cm35 (47.9)38 (52.1)