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| Index | Median | P | |
|---|---|---|---|
| Conservative treatment group (%) | Surgical treatment group (%) | ||
| VC | 35.3 | 42.1 | 0.027 |
| FEV1 | 35.9 | 44.2 | 0.027 |
| PEF | 19.6 | 21.2 | 0.127 |
| Pain | 6 | 3 | 0** |
**, P<0.001. VC, vital capacity; FEV1, forced expiratory volume in one second; PEF, peak expiratory flow.
