Table 3 Risk factors for prolonged (> 4 days) postoperative chest tube duration

Age (continuous)

1.04 (1.00–1.08)

0.033

1.03 (1.00–1.07)

0.07

Gender (male vs female)

2.67 (1.33–5.34)

0.006

2.47 (1.22–5.01)

0.012

BMI (continuous)

0.94 (0.87–1.02)

0.13

–

–

Cardiac comorbidities (none vs yes)

1.14 (0.54–2.41)

0.73

–

–

Pleural adhesiolysis (none vs yes)

1.84 (0.85–4.00)

0.12

–

–

Site of resection (upper/middle vs lower)

1.63 (0.82–3.26)

0.17

–

–

Tumor size (continuous)

1.14 (0.87–1.49)

0.35

–

–

Tumor histology (adenocarcinoma vs others)

1.80 (0.86–3.75)

0.12

–

–

N° of resected lymph nodes (continuous)

1.00 (0.93–1.07)

0.89

–

–

Energy device (ultrasonic vs monopolar)

1.03 (0.53–2.01)

0.93

1.52 (0.71–3.24)

0.28

Surgery duration (continuous)

1.01 (1.00–1.01)

0.039

1.00 (1.00–1.01)

0.22