Table 1: Changes in anthropometric and hematological parameters in children before and after the intervention of nutritional education in schools from Aragua, Táchira, and Lara States, Venezuela. ( 𝑛 = 4 2 7 ).

Before interventionAfter intervention

Age (years) 8 . 6 8 ± 2 . 3 1 9.44 ± 2.44*
Weight (Kg) 2 8 . 4 7 ± 9 . 6 9 31.12 ± 12.11*
Height (cm) 1 2 7 . 4 9 ± 1 3 . 8 0 131.40 ± 15.88*
Hematocrit (%) 3 7 . 4 2 ± 3 . 3 2 38.57 ± 2.90*
Ferritin (μg/L) 1 8 . 0 4 ± 1 2 . 0 0 22.56 ± 15.82*
Serum retinol (μg/dL) 2 2 . 0 9 ± 6 . 6 1 20.73 ± 5.80
Serum folate (nmol/L) 1 1 . 7 4 ± 7 . 1 9 10.58 ± 8.80

*Statistically significant difference between before and after intervention ( 𝑃 < . 0 5 ).