Table 6. Multiple linear regression models including ferritin or haemoglobin as dependent variables and age, gender, country of birth and H. pylori infection as independent variables in children from Chile (n = 105) and Brazil (n = 125).

	Univariate analysis		Multivariate analysis
	Beta	P value	Beta	P value
	Coefficient		coefficient
FERRITIN
age	0.014	0.8	–	–
female	−0.222	0.001	−0.222	0.001
birth in Brazil	−0.155	0.02	−0.176	0.006
H. pylori infection	−0.164	0.01	−0.172	0.007
HAEMOGLOBIN
age	0.236	<0.001	0.291	<0.001
female	−0.141	0.03	−0.191	0.003
birth in Brazil	−0.19	0.76	–	–
H. pylori infection	−0.130	0.04	−0.159	0.01