Table 2.

Stepwise linear regression analysis used to assess determinants of the TIDD (IU/day).

Dependent variable	Coefficient	SE coefficient	p value
Intercept	-194, 62	83, 27	0.021801
Age2 (years)	0.09020	0.02727	0.001385
Weight loss (%)	0.67817	0.16919	0.000132
Veinous pH	28.59818	11.87413	0.018208
Veinous Bicarbonate (mmol/L)	-1.02781	0.26083	0.000167
Weight (kg)	0.81462	0.13253	2.55e − 08

For the whole model: R² = 0.7809 and R² adjusted = 0.7678; Pearson's correlation coefficient 0.88; p value < 2.2e − 16.