Table 3.

Multiple linear regression model simultaneously accounting for age, gender, length, weight and study group (Model 1).

Independent variables	Unstandardized coefficient	Standardized coefficient	p value
Constant	-0.067	-	0.686
Age	0.016	0.341	0.173
Gender	-0.009	-0.03	0.741
Length	-0.001	-0.07	0.817
Weight	-0.003	-0.205	0.301
Study group	-0.055	-0.186	0.065

R² = 0.089, p = 0.057