Table 1. Patient characteristics at the time of surgery among patient groups.
| Characteristics | SL, n=40 (%) | PN, n=67 (%) | P value | Matched PN, n=40 (%) | P value |
|---|---|---|---|---|---|
| Age, years median [range] | 61.5 [40-78] | 60 [45-83] | 0.560 | 65.5 [46-78] | 0.325 |
| Female | 11 (27.5) | 18 (26.9) | 0.137 | 9 (22.5) | 0.797 |
| Never smokers | 3 (7.5) | 6 (9.0) | 0.734 | 1 (2.5) | 0.615 |
| Pack years, median [range] | 40 [0-150] | 40 [0-100] | 0.547 | 40 [0-100] | 0.944 |
| Mediastinoscopy | 7 (17.5) | 14 (20.9) | 0.010 | 9 (22.5) | 0.781 |
| Neoadjuvant therapy | 11 (27.5) | 14 (20.9) | 0.493 | 11 (27.5) | 0.729 |
| Clinical stage | 0.366 | 0.875 | |||
| IA | 3 (7.5) | 8 (11.9) | 4 (10.0) | ||
| IB | 5 (12.5) | 8 (11.9) | 2 (5.0) | ||
| IIA | 1 (2.5) | 1 (1.5) | 1 (2.5) | ||
| IIB | 18 (45.0) | 25 (37.3) | 17 (42.5) | ||
| IIIA | 6 (15.0) | 9 (13.4) | 8 (20.0) | ||
| IIIB | 7 (17.5) | 16 (23.9) | 8 (20.0) | ||
| IV | 0 (0.0) | 0 (0.0) | 0 (0.0) | ||
| CCI | 3 [0-6] | 2 [0-6] | 0.135 | 3 [1-5] | 0.657 |
| Preoperative spirometry median [range] | |||||
| FEV1, L/1s | 2.23 [1.21-3.87] | 2.49 [1.41-4.83] | 0.690 | 2.30 [1.41-3.19] | 0.734 |
| FEV1% | 70.5 [29-97] | 77 [42-111] | 0.014 | 71 [42-109] | 0.701 |
| DLCO | 72 [32-101] | 77 [30-125] | 0.037 | 73 [30-115] | 0.256 |
| DL/VA | 84 [48-131] | 89 [25-125] | 0.029 | 88 [25-125] | 0.289 |
| Predicted FEV1, L/1s median [range] | 1.67 [1.07-2.81]; n=14 | 1.47 [0.93-2.39]; n=56 | 0.217 | 1.4 [0.93-2.3]; n=34 | 0.360 |
| Predicted FEV1% median [range] | 54.8 [24-75]; n=40 | 45.66 [32-72]; n=56 | 0.318 | 42.76 [32-68]; n=34 | 0.080 |
| Predicted DLCO median [range] | 59.7 [27-81]; n=29 | 49.77 [31-85]; n=50 | 0.099 | 50.23 [31-85]; n=30 | 1.163 |
SL, sleeve lobectomy; PN, pneumonectomy; FEV1, forced expiratory volume in 1 s; DLCO, diffusing capacity for carbon monoxide; CCI, Charlson Comorbidity Index.