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Table 2 The correlation between PDV and factors with P < 0.1 from continuous variables

From: Predictive factors for pleural drainage volume after uniportal video-assisted thoracic surgery lobectomy for non-small cell lung cancer: a single-institution retrospective study

Factors Mean ± SD or median (IQR) Correlation coefficient P value
Age (years) 60 (53–65) 0.245 < 0.001
BMI (kg/m2) 24.01 ± 3.34 0.096 0.045
Operation time (min) 132 (108–164) 0.127 0.008
FEV1% (%) 96.2 ± 16.7 − 0.229 < 0.001
DLCO% (%) 89.1 ± 16.8 − 0.089 0.063
LVFS (%) 32.5 ± 2.3 − 0.090 0.059
LVEF (%) 61.5 ± 2.8 − 0.139 0.003
TP (g/l) 68.85 ± 4.92 − 0.105 0.028
ALB (g/l) 40.63 ± 3.44 − 0.085 0.076
CRE (μmol/l) 64.20 ± 13.67 0.083 0.081
APTT (s) 27.32 ± 3.36 0.089 0.063
PT (s) 10.75 ± 0.83 0.081 0.089
INR 0.96 ± 0.06 0.081 0.091
WBC (109/l) 5.87 ± 1.49 0.091 0.056
  1. PDV pleural drainage volume, IQR interquartile range, BMI body mass index, FEV1% forced expiratory volume in 1 s % predicted, DLCO% carbon monoxide lung diffusion capacity % predicted, LVFS left ventricular fractional shortening, LVEF left ventricular ejection fraction, TP serum total protein, ALB serum albumin, CRE serum creatinine, PT prothrombin time, APTT activated partial thromboplastin time, INR international normalized ratio, WBC white blood cell count