Retrospective Study
Copyright ©The Author(s) 2020.
World J Clin Cases. Aug 26, 2020; 8(16): 3450-3457
Published online Aug 26, 2020. doi: 10.12998/wjcc.v8.i16.3450
Table 1 Comparison of general data between the two groups
Clinical dataControl group (n = 101)Observation group (n = 101)P value
Gender (n)0.884
Male6465
Female3736
Age (yr)61.6 ± 3.262.3 ± 3.10.116
Location of lesion0.916
Lower lobe3635
Medium lobe1312
Upper lobe5254
Disease size (mm)0.769
≤ 203537
> 20-306664
Computed tomography bronchial signs0.737
Positive7779
Negative2422
Ultrasonic probe position0.162
External to the lesion1011
Near the lesion3937
Within the lesion5253
Table 2 Comparison of the diagnostic rates between different subgroups of the two groups
GroupControl (n = 101)Observation (n = 101)χ2P value
Focus position
Upper left24230.0150.901
Lower left26250.0140.907
Upper right21210.0020.965
Lower right15160.0520.819
Lesion size0.0070.933
8-20 mm3938
21-30 mm4747
Probe position
Internal51520.0630.802
External2200.991
Approaching33310.0660.797
Total8685
Table 3 Comparison of the total operating time of diagnosis and time needed to determine the lesion in the two groups
GroupControl (n = 101)Observation (n = 101)tP value
General operating time (min)25.4 ± 4.926.1 ± 4.81.0260.306
Time needed to determine the lesion (min)8.7 ± 1.14.9 ± 1.024.5490