Table 4

 Comparison of follow up measures of iron status in the three intervention groups

Follow up measureIntervention group Median (5th, 95th centile)Iron follow-on versus iron medicine (p value)Iron milk versus iron medicine (p value)
Iron medicine (n1 = 59)Iron follow-on (n2 = 49)Iron milk (n3 = 54)Bivariate*Multivariate†Bivariate*Multivariate†
*Adjusted for enrolment iron measure.
†Adjusted for enrolment iron measure, initial C reactive protein, Pacific ethnicity, having a diagnosis of pneumonia, currently drinking breast milk, maternal restriction of meat intake during pregnancy, and living in a household with more than three children.
‡Loge transformed as dependent variable for regression analysis.
§n1 = 57, n2 = 48, n3 = 50; ¶n2 = 48, n3 = 53; **n1 = 56, n2 = 45, n3 = 50.
Haemoglobin (g/l)118 (99, 134)120 (104, 132)115 (94, 127)0.450.980.260.52
Ferritin‡§ (μg/l)22 (4, 92)17 (7, 65)20 (4, 56)0.140.420.210.94
Iron saturationঠ(%)14 (3, 34)15 (5, 29)12 (5, 24)0.660.470.350.44
Red cell distribution width‡** (%)16 (14, 18)16 (14, 20)17 (14, 18)0.250.180.220.03
Mean cell volume (fl)74 (61, 82)73 (66, 79)73 (60, 80)0.170.230.900.80