Fecal calprotectin levels at baseline and 4 months, by group, in Kenyan infants (n = 115) receiving daily for 4 months an MNP containing no iron (−12.5mgFeMNP) or containing 12.5 mg iron (+12.5mgFeMNP). At endpoint, fecal calprotectin was significantly higher in the +12.5mgFeMNP group than in the −12.5mgFeMNP group (P = .008). Differences were investigated via general linear models with baseline variables as covariates. Boxplots are shown with the 10th to 90th percentiles. Adapted from Jaeggi et al.²⁰