Table 3. Pulmonary function changes after VATS lobectomy and VATS segmentectomy evaluated according to the resection extent index before and after propensity score matching.
| Parameters | Before PSM | After PSM | |||||
|---|---|---|---|---|---|---|---|
| Lobectomy | Segmentectomy | P value | Lobectomy | Segmentectomy | P value | ||
| Resection extent index <0.5 | n=338 | n=214 | n=205 | n=205 | |||
| FVC loss (%) | −17.8±10.6 | −10.8±8.5 | <0.001 | −18.5±10.7 | −10.7±8.6 | <0.001 | |
| FEV1 loss (%) | −18.9±10.4 | −13.3±8.4 | <0.001 | −18.1±10.6 | −13.2±8.5 | <0.001 | |
| DLCO loss (%) | −13.6±13.0 | −9.1±12.9 | <0.001 | −14.1±12.5 | −9.0±13.1 | <0.001 | |
| Resection extent index ≥0.5 | n=338 | n=107 | n=55 | n=55 | |||
| FVC loss (%) | −17.8±10.6 | −14.6±8.1 | 0.001 | −17.7±12.3 | −14.7±7.7 | 0.125 | |
| FEV1 loss (%) | −18.9±10.4 | −17.0±7.5 | 0.046 | −18.8±12.3 | −16.0±6.4 | 0.145 | |
| DLCO loss (%) | −13.6±13.0 | −11.8±10.5 | 0.181 | −13.7±12.3 | −11.5±11.1 | 0.357 | |
VATS, video-assisted thoracic surgery; PSM, propensity score matching; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; DLCO, diffusing capacity of the lungs for carbon monoxide.