Table 3 Univariate and multivariate Logistic regression analysis of predictive factors for mediastinal lymph node in NSCLC patients

SUVmax of mediastinal lymph node

< 2.49

Reference

Reference

≥ 2.49

6.947 (3.551–13.591)

7.215 (3.326–15.649)

Primary-tumor SUVmax

< 4.11

Reference

≥ 4.11

5.600 (2.272–13.801)

Primary-tumor SUVpeak

< 2.92

Reference

Reference

≥ 2.92

6.021 (2.444–14.829)

5.717 (2.094–15.605)

Primary-tumor SUVmean

< 2.39

Reference

≥ 2.39

5.077 (2.058–12.525)

Primary-tumor MTV (cm³)

< 30.88

Reference

≥ 30.88

2.388 (1.244–4.583)

Primary-tumor TLG

< 83.53

Reference

≥ 83.53

2.737 (1.460–5.128)

Degree of primary-tumor solidity

Partial solid

Reference

solid

5.429 (2.321–12.697)

CEA (ng/ml)

< 3.94

Reference

Reference

≥ 3.94

3.394 (1.800–6.400)

2.467 (1.182–5.149)

CYFRA21-1 (ng/ml)

< 2.10

Reference

≥ 2.10

2.642 (1.116–6.252)

CA19-9 (U/ml)

< 16.6

Reference

≥ 16.6

2.234 (1.168–4.273)

SCC (ng/ml)

< 16.6

2.052 (1.023–4.113)

4.795 (2.019–11.388)

≥ 16.6

Reference

Reference

NSE (ng/ml)

< 14.66

Reference

≥ 14.66

1.976 (1.051–3.713)