Table 4. Analysis of influencing factors of improvement of postoperative muscle weakness in 54 patients with thymoma complicated with myasthenia gravis.
| Features | Changes of MG after surgery | χ2 | P value | |
|---|---|---|---|---|
| Effective (CR/PR) | Ineffective (S/A) | |||
| Sex | 0.321 | 0.571 | ||
| Male | 14 | 15 | ||
| Female | 14 | 11 | ||
| Age | 0.126 | 0.723 | ||
| ≤45 | 11 | 9 | ||
| >45 | 17 | 17 | ||
| Myasthenia type | 0.223 | 0.637 | ||
| I | 6 | 7 | ||
| IIa/IIb/III | 22 | 19 | ||
| Masaoka stage | 0.026 | 0.872 | ||
| I/II | 21 | 19 | ||
| III/IV | 7 | 7 | ||
| Pathological type | 0.228 | 0.633 | ||
| A/AB | 12 | 14 | ||
| B1 | 8 | 3 | ||
| B2/B3/C | 8 | 9 | ||
| Surgical approach | 0.026 | 0.872 | ||
| Latero-thoracotomy/VATS | 21 | 19 | ||
| Median sternotomy | 7 | 7 | ||
| Diseased time | 0.164 | 0.686 | ||
| <3 m | 18 | 16 | ||
| ≥3 m | 7 | 8 | ||
| Hospital stay | 0.000 | 0.984 | ||
| ≤20 | 13 | 12 | ||
| >20 | 15 | 14 | ||
VATS, video-assisted thoracic surgery; MG, myasthenia gravis; S, stability; PR, partial remission; CR, complete remission; A, aggravation.