Table 1. The demographic and clinical characteristics by surgical procedures.
| Variables | Total (n=173) | Surgical procedures | P | |||
|---|---|---|---|---|---|---|
| Mono-segmentectomy (n=71) | Mono-subsegmentectomy (n=37) | Combined subsegmentectomies (n=42) | Single segmentectomy plus adjacent subsegmentectomy (n=23) | |||
| Age, years | 54 [45, 63] | 53 [44, 60] | 54 [48, 63] | 54 [40, 64] | 54 [47, 64] | 0.59 |
| Sex | 0.35 | |||||
| Male | 56 (32.37) | 22 (30.99) | 16 (43.24) | 13 (30.95) | 5 (21.74) | |
| Female | 117 (67.63) | 49 (69.01) | 21 (56.76) | 29 (69.05) | 18 (78.26) | |
| Smoking history | 0.35 | |||||
| Ever | 14 (8.09) | 9 (12.68) | 1 (2.70) | 3 (7.14) | 1 (4.35) | |
| Never | 159 (91.91) | 62 (87.32) | 36 (97.30) | 39 (92.86) | 22 (95.65) | |
| Comorbidity | 0.65 | |||||
| Never | 145 (83.82) | 62 (87.32) | 29 (78.38) | 35 (83.33) | 19 (82.61) | |
| Ever | 28 (16.18) | 9 (12.68) | 8 (21.62) | 7 (16.67) | 4 (17.39) | |
| Tumor size, cm | 1.19 [0.95, 1.47] | 1.20 [0.97, 1.56] | 1.13 [0.89, 1.40] | 1.14 [0.93, 1.41] | 1.35 [1.00, 1.63] | 0.33 |
| Tumor size | 0.63 | |||||
| ≤1 cm | 53 (30.64) | 19 (26.76) | 14 (37.84) | 14 (33.33) | 6 (26.09) | |
| >1 cm | 120 (69.36) | 52 (73.24) | 23 (62.16) | 28 (66.67) | 17 (73.91) | |
| Lobe location | <0.001 | |||||
| Right upper lobe | 57 (32.95) | 25 (35.21) | 16 (43.25) | 5 (11.91) | 11 (47.83) | |
| Right lower lobe | 35 (20.23) | 20 (28.17) | 5 (13.51) | 3 (7.14) | 7 (30.43) | |
| Left upper lobe | 55 (31.79) | 10 (14.08) | 11 (29.73) | 31 (73.81) | 3 (13.04) | |
| Left lower lobe | 26 (15.03) | 16 (22.54) | 5 (13.51) | 3 (7.14) | 2 (8.70) | |
| Transverse location | <0.001 | |||||
| Intra-segmental nodule | 124 (71.68) | 71 (100.00) | 37 (100.00) | 16 (38.10) | 0 | |
| Inter-segmental nodule | 49 (28.32) | 0 | 0 | 26 (61.90) | 23 (100.00) | |
| Depth location | 0.79 | |||||
| Inner | 0 | 0 | 0 | 0 | 0 | |
| Middle | 38 (21.97) | 16 (22.54) | 6 (16.22) | 10 (23.81) | 6 (26.09) | |
| Outer | 135 (78.03) | 55 (77.46) | 31 (83.78) | 32 (76.19) | 17 (73.91) | |
Data are presented as median [interquartile range] or n (%). Comorbidity includes pulmonary and cardiac comorbidities.