Table 5.

Linear Regression model to predict hemoglobin concentration according the iron metabolism parameter iron in blood (μg/dl), transferrin (mg/dl), ferritin (ng/ml) in all participants (n = 99) such as the participants without (n = 70) and with (n = 29) anemia

All patients	Coefficient beta	95% CI	p-value
Iron in blood	0.358	0.009–0.028	0.000*
Transferrin	0.180	−0.001 – 0.011	0.119
Ferritin	0.191	0.000–0.004	0.099
Without anemia
Iron in blood	0.151	−0-003 – 0.014	0.201
Transferrin	0.243	−0.001 – 0.013	0.092
Ferritin	0.314	0.000–0.004	0.032*
With anemia
Iron in blood	0.085	−0.013 – 0.020	0.673
Transferrin	−0.448	−0.011 – 0.001	0.092
Ferritin	−0.489	−0.006 – 0.000	0.048*

Significance* = p < 0.05; Coefficient beta = the negative sign indicated a negative effect of the independent variable on hemoglobin concentration