Table 3 Univariate and multivariate cox regression analysis of recurrence-free survival in patients with thymoma

Sex

Female

Reference

Male

1.833

0.777–4.324

0.166

Age

0.953

0.925–0.982

0.002

0.941

0.904–0.979

0.002

Myasthenia gravis

2.127

0.789–5.738

0.136

CCI

0

Reference

1&2&3

1.543

0.667–3.568

0.311

WHO pathological classification

A + AB + MNT

Reference

Reference

B + MIX + C

32.769

0.652–1647.895

0.081

-

-

0.959

Masaoka-Koga staging

I + II

Reference

Reference

III + IV

39.471

9.235–168.708

0.000

46.241

5.927–360.755

0.000

Surgical approach

OT

Reference

VATS

0.604

0.264–1.381

0.232

Resection status

R0

Reference

Reference

None R0

13.604

5.255–35.216

0.000

1.567

0.551–4.454

0.400

Perioperative complications

3.265

1.316–8.103

0.011

1.785

0.667–4.778

0.249

Postoperative therapy

14.282

1.925–105.974

0.009

4.369

0.481–39.665

0.190

Sex

Female

Reference

Male

1.833

0.777–4.324

0.166

Age

0.953

0.925–0.982

0.002

0.941

0.904–0.979

0.002

Myasthenia gravis

2.127

0.789–5.738

0.136

CCI

0

Reference

1&2&3

1.543

0.667–3.568

0.311

WHO pathological classification

A + AB + MNT

Reference

Reference

B + MIX + C

32.769

0.652–1647.895

0.081

-

-

0.961

TNM staging

I + II

Reference

Reference

III + IV

20.646

7.008–60.822

0.000

16.814

4.529–62.421

0.000

Surgical approach

OT

Reference

VATS

0.604

0.264–1.381

0.232

Resection status

R0

Reference

Reference

None R0

13.604

5.255–35.216

0.000

1.516

0.527–4.365

0.440

Perioperative complications

3.265

1.316–8.103

0.011

1.588

0.600–4.199

0.352

Postoperative therapy

14.282

1.925–105.974

0.009

5.536

0.649–47.222

0.118