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. Author manuscript; available in PMC: 2021 Aug 30.
Published in final edited form as: Eur J Surg Oncol. 2019 May 15;45(10):1983–1992. doi: 10.1016/j.ejso.2019.05.009

Table 3A.

Stepwise Linear Regression Results for Rank {Intraoperative Estimated Blood Loss, cc} (N=311).

Note: (√) Represents Selection into the Linear Regression Model.
Univariable Multivariable Model2
Baseline Variable1: P-value P-value Coeff ± SE
N-Z Thrombus Level .000001 (√) <.000001 40.812±6.595
TB Approach .00003 (√) <.000001 −57.751±7.390

Abbreviations: N-Z, Neves-Zincke; TB, Transplant Based.

1

The 2 variables selected into the stepwise linear regression model were defined as follows: N-Z Thrombus Level={ordinal variable, scored 0–2 for N-Z Thrombus Level II, III, and IV, respectively}; and TB Approach={1 if TB Approach, 0 otherwise}. The order of selection for the 2 selected variables are shown as listed in the table.

2

Note that if Propensity Score for the TB approach was retained first in the linear regression model, then the same 2 variable model would still be selected.