Table 6 Estimated difference between mean at indicated day and mean at day 3 in Control for serum iron (Fe in µmol/L) with lower and upper limits of the 95% confidence interval (95%CI) between three iron supplementation methods (Needle-Free injection, injection by needle and no treatment) in course of time from the multivariate model

From: Comparison of efficacy of needle-free injection versus injection by needle for iron supplementation of piglets: a double blind randomized controlled trial