Figure 1From: Could giardiasis be a risk factor for low zinc status in schoolchildren from northwestern Mexico? A cross-sectional study with longitudinal follow-up Comparison of the serum zinc levels between the Giardia -free (n = 65) and the Giardia -infected (n = 49) groups (cross-sectional analysis). A = 14.4 (1.4), *B = 13.8 (1.9), *Error Bars = (S.E.). * Non-adjusted geometric means. ** Adjusted ANCOVA (region, sex, age and intake of zinc).Back to article page