Table 4.

Backward stepwise logistic regression multivariate analysis of factors associated with identification of delayed gastric emptying

Model 1				Model 2				Final Model
Factor	OR	95% CI	P- Value	Factor	OR	95% CI	P- value	Factor	OR	95% CI	P- value
BMI*	1.0	091 – 1.2	0.5	BMI	1.0	0.92 – 1.2	0.5	BSA	0.26	0.10 – 0.68	0.006
Age	1.0	0.83 – 1.2	0.89	BSA	0.17	0.03 – 0.85	0.03
BSA#	0.14	0.01 – 2.59	0.19

^*BMI = Body Mass Index

^#BSA = Body Surface Area

Each step of the analysis is shown with the final model only including BSA after both BMI and age have been removed.