Table 1. Baseline of the two groups.
| Characteristics | PR group, n=197 | NPR group, n=742 | P |
|---|---|---|---|
| Age, mean ± SD | 58.5±9.6 | 58.8±9.3 | 0.564 |
| Gender | |||
| Men | 116 (58.9) | 406 (54.7) | 0.295 |
| FEV1, L | 2.2±0.6 | 2.3±0.5 | 0.059 |
| ppoFEV1% | 69.9±17.5 | 69.3±18.4 | 0.676 |
| Dlco, mL/min/mmHg | 21.7±5.0 | 22.2±5.0 | 0.231 |
| ppoDlco% | 72.2± 23.3 | 71.4±24.6 | 0.684 |
| Comorbidities | |||
| Hypertension or/and coronary disease | 10 (5.0) | 37 (5.0) | 0.959 |
| Current smoking status | 50 (25.4) | 176 (23.7) | 0.628 |
| COPD | 22 (11.2) | 92 (12.4) | 0.638 |
| Diabetes | 13 (6.6) | 49 (6.6) | 0.998 |
| Clinical stage | 0.524 | ||
| Stage I | 102 (51.8) | 350 (47.2) | |
| Stage II | 69 (35.0) | 303 (40.8) | |
| Stage III | 24 (12.2) | 81 (10.9) | |
| Stage IV | 2 (1.0) | 8 (1.1) | |
| Surgical approach | |||
| VATS | 122 (61.9) | 489 (65.9) | 0.298 |
| Open | 75 (38.1) | 253 (34.1) | |
| Duration of drainage | 4.2±2.8 | 4.5±2.5 | 0.110 |
| Average time of in-hospital stay, day | 14.7±4.0 | 16.7±6.2 | <0.001 |
| Preoperative, day | 8.6±1.9 | 8.4±1.8 | 0.230 |
| Postoperative, day | 6.2±3.3 | 8.3±5.6 | <0.001 |
Data are shown as number (%) or mean ± standard deviation. PR, pulmonary rehabilitation; NPR, non-pulmonary rehabilitation; FEV1, forced expiratory volume in one second; ppoFEV1, postoperative predicted FEV1. Dlco, diffusion capacity for carbon monoxide of the lung; COPD, chronic obstructive pulmonary disease; VATS, video assisted thoracic surgery.