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Table 4 Comparison of zinc, iron and red blood cell status between study groups

From: Cow’s milk-based beverage consumption in 1- to 4-year-olds and allergic manifestations: an RCT

Variable Control median (IQRa) CMBB median (IQRa) p-value*
Serum Zinc, μmol/L
 Baseline 21.4 (17.6–25.4) 21.8 (17.2–25.9) 0.793
 Week 28 24.4 (20.5–29.5) 24.6 (20.2–28.2) 0.648
 Baseline to Week 28 3.2 (−1.0–8.0) 3.3 (−2.0–8.0) 0.820
Serum Ferritin, ng/mLb
 Baseline 16.4 (<10–26.2) 14.8 (<10–21.8) 0.413
 Week 28 13.5 (<10–19.6) 13.3 (<10–21.8) 0.863
 Baseline to Week 28 −2.2 (−10.0–3.0) 0.0 (−7.0–6.0) 0.148
Hemoglobin, g/dL
 Baseline 11.8 (11.2–12.3) 11.7 (11.1–12.3) 0.432
 Week 28 12.0 (11.4–12.6) 11.9 (11.4–12.5) 0.595
 Baseline to Week 28c 0.26 (0.1) 0.30 (0.1) 0.561
Hematocrit, %
 Baseline 35.5 (34.0–37.1) 35.3 (33.8–37.2) 0.560
 Week 28 35.1 (33.0–36.9) 34.9 (33.4–36.8) 0.736
 Baseline to Week 28c −0.41 (0.2) 0.32 (0.2) 0.747
Red Blood Cells, x109/mL
 Baseline 4.6 (4.4–4.8) 4.6 (4.4–4.8) 0.678
 Week 28 4.6 (4.3–4.7) 4.5 (4.2–4.8) 0.200
 Baseline to Week 28c −0.05 (0.0) −0.12 (0.00) 0.024
  1. aIQR = 25–75 % interquartile range
  2. b26 % of the samples were at or under the detection limit
  3. cChanges from baseline to study week 28 were analyzed using analysis of covariance (ANCOVA), with baseline values as covariate; the values listed are adjusted mean (SE)
  4. *Kruskal-Wallis test was used for all variables except the ones described in footnote c