Experimental group A (n = 51) | Control group B (n = 38) | Total (n = 89) | T/ χ2 value | p value | |
---|---|---|---|---|---|
Age [year, average age (± SD)] | 60.73 ± 5.643 | 61.61 ± 6.445 | 61.10 ± 5.979 | -0.685 | 0.495 |
Gender | |||||
Male [no. of cases (%)] | 21 (41.2) | 14 (36.8) | 35 (39.3) | 0.171 | 0.679 |
Female [no. of cases (%)] | 30 (58.8) | 24 (63.2) | 54 (60.7) | ||
History of smoking | |||||
Smoker [no. of cases (%)] | 17 (33.3) | 11 (28.9) | 28 (31.5) | 0.194 | 0.659 |
Non-smoker [no. of cases (%)] | 34 (66.7) | 27 (71.1) | 61 (68.5) | ||
Position (no. of cases, proportion %) | |||||
Left lung | 18 (35.3) | 13 (34.2) | 31 (34.8) | 0.011 | 0.915 |
Right lung | 33 (64.7) | 25 (65.8) | 58 (65.2) | ||
LS1 + 2 | 3 (5.9) | 2 (5.3) | 5 (5.6) | 0.829 | 1.000 |
LS1 + 2 + 3 | 3 (5.9) | 3 (7.9) | 6 (6.7) | ||
LS4 + 5 | 3 (5.9) | 2 (5.3) | 5 (5.6) | ||
L3 | 2 (3.9) | 1 (2.6) | 3 (3.4) | ||
L6 | 2 (3.9) | 2 (5.3) | 4 (4.5) | ||
L basal segment | 5 (9.8) | 3 (7.9) | 8 (9.0) | ||
RS1 | 6 (11.8) | 4 (10.5) | 10 (11.2) | ||
RS1 + 2 | 7 (13.7) | 5 (13.2) | 12 (13.5) | ||
RS3 | 3 (5.9) | 2 (5.3) | 5 (5.6) | ||
RS6 | 5 (9.8) | 3 (7.9) | 8 (9.0) | ||
R basal segment | 12 (23.5) | 11 (28.9) | 23 (25.8) |