Table 2 Logistic regression analysis

Gender

 Female

Reference

 Male

1.029

0.552–1.918

Age

1.024

1.004–1.045

0.956–1.024

Other autoimmune disorders

0.780

0.265–2.300

Preoperative history of myasthenic crisis

21.250

3.991–113.136

1.892–207.705

Preoperative course

  < 12 months

Reference

Reference

  ≥ 12 months

1.564

0.839–2.917

Osserman classification

 I + IIA

Reference

Reference

 IIB + III + IV

37.798

9.002–158.709

5.981–146.237

Preoperative daily dose of pyridostigmine bromide

  ≤ 240 mg

Reference

Reference

  > 240 mg

6.816

3.534–13.147

2.544–18.693

Preoperative immunosuppressants

1.042

0.417–2.604

Preoperative steroid

1.835

0.825–4.085

ASA score

 1

Reference

Reference

 2 + 3

3.279

1.638–6.564

2.526–31.246

FEV1

0.327

0.189–0.566

0.152–1.679

FEV1/FVC

0.988

0.951–1.026

FEV1%

0.971

0.954–0.988

0.961–1.030

MVV%

0.983

0.966–1.000

0.985–1.028

DLCO%

0.980

0.963–0.998

0.957–1.005

Operation time

1.005

0.998–1.012

Surgical procedure

 OT

Reference

Reference

 VAST

1.293

0.427–3.912

Blood loss

 0–1000

Reference

Reference

  > 1000

7.907

1.086–57.582

0.926–819.913

Drainage volume over the first three days

 0–800

Reference

  > 800

1.191

0.607–2.338

Ectopic thymus

0.749

0.169–3.316

Preoperative application of gamma globulin

5.909

2.720–12.839

0.393–3.531