Table 2:
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Univariable analysis with proportion of blood pixels and drainage volume; multivariable linear regression model with proportion of blood pixels and log (drainage volume) (model R2 = 0.228)

CharacteristicsUnivariable analysis
Multivariable linear regression analysis
Regression Coefficient(β)95% CIP-valueRegression Coefficient(β)95% CIP-value
Age at surgery10.7865.803-15.769< 0.0010.0050.001-0.0080.005
Male−228.153−329.657-126.650< 0.001
Immediate postoperative air leakage250.608150.735-350.482< 0.0010.1300.061 ∼ 0.199< 0.001
Surgery duration4.0992.977-5.220< 0.0010.0010.001 ∼ 0.0020.001
SumPBP0.1620.108-0.215< 0.001
SumPBP-Flushing1.1960.843-1.548< 0.001< 0.001< 0.001 ∼ 0.0010.022
Clinical N stage106.7065.160-208.2520.040
Bleeding volume1.5630.917-2.208< 0.001< 0.001< 0.001 ∼ 0.0010.033
CharacteristicsUnivariable analysis
Multivariable linear regression analysis
Regression Coefficient(β)95% CIP-valueRegression Coefficient(β)95% CIP-value
Age at surgery10.7865.803-15.769< 0.0010.0050.001-0.0080.005
Male−228.153−329.657-126.650< 0.001
Immediate postoperative air leakage250.608150.735-350.482< 0.0010.1300.061 ∼ 0.199< 0.001
Surgery duration4.0992.977-5.220< 0.0010.0010.001 ∼ 0.0020.001
SumPBP0.1620.108-0.215< 0.001
SumPBP-Flushing1.1960.843-1.548< 0.001< 0.001< 0.001 ∼ 0.0010.022
Clinical N stage106.7065.160-208.2520.040
Bleeding volume1.5630.917-2.208< 0.001< 0.001< 0.001 ∼ 0.0010.033

PBP, proportion of blood pixels; SumPBP: sum of PBP; SumPBP-Flushing: sum of PBP from flushing to the end of the operation.

Table 2:
Open in new tab

Univariable analysis with proportion of blood pixels and drainage volume; multivariable linear regression model with proportion of blood pixels and log (drainage volume) (model R2 = 0.228)

CharacteristicsUnivariable analysis
Multivariable linear regression analysis
Regression Coefficient(β)95% CIP-valueRegression Coefficient(β)95% CIP-value
Age at surgery10.7865.803-15.769< 0.0010.0050.001-0.0080.005
Male−228.153−329.657-126.650< 0.001
Immediate postoperative air leakage250.608150.735-350.482< 0.0010.1300.061 ∼ 0.199< 0.001
Surgery duration4.0992.977-5.220< 0.0010.0010.001 ∼ 0.0020.001
SumPBP0.1620.108-0.215< 0.001
SumPBP-Flushing1.1960.843-1.548< 0.001< 0.001< 0.001 ∼ 0.0010.022
Clinical N stage106.7065.160-208.2520.040
Bleeding volume1.5630.917-2.208< 0.001< 0.001< 0.001 ∼ 0.0010.033
CharacteristicsUnivariable analysis
Multivariable linear regression analysis
Regression Coefficient(β)95% CIP-valueRegression Coefficient(β)95% CIP-value
Age at surgery10.7865.803-15.769< 0.0010.0050.001-0.0080.005
Male−228.153−329.657-126.650< 0.001
Immediate postoperative air leakage250.608150.735-350.482< 0.0010.1300.061 ∼ 0.199< 0.001
Surgery duration4.0992.977-5.220< 0.0010.0010.001 ∼ 0.0020.001
SumPBP0.1620.108-0.215< 0.001
SumPBP-Flushing1.1960.843-1.548< 0.001< 0.001< 0.001 ∼ 0.0010.022
Clinical N stage106.7065.160-208.2520.040
Bleeding volume1.5630.917-2.208< 0.001< 0.001< 0.001 ∼ 0.0010.033

PBP, proportion of blood pixels; SumPBP: sum of PBP; SumPBP-Flushing: sum of PBP from flushing to the end of the operation.

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