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. Author manuscript; available in PMC: 2008 May 5.
Published in final edited form as: Neurochem Res. 2007 Jun 15;32(10):1665–1672. doi: 10.1007/s11064-007-9396-8

Table 1.

Background characteristics*

Group Iron-deficient anemic Non-anemic P-value
N 26 18
Infant
 Age at recording (months) 7.1 ± 0.4 6.8 ± 0.4 0.05
 Gender (% male, n) 69% (18) 50% (9) 0.20
 Gestational age (weeks) 39.1 ± 1.1 39.6 ± 1.3 0.19
 Birth weight (kg) 3.4 ± 0.4 3.7 ± 0.4 0.01
 Birth length (cm) 50.6 ± 2.1 51.9 ± 1.6 0.04
 Milk intake (ml/day) 572.7 ± 251.3 544.5 ± 288.7 0.73
 Growth in infancy (6 months)
  Weight-for-age z-score 0.8 ± 0.7 0.4 ± 1.0 0.19
  Height-for-age z-score 0.1 ± 0.8 0.2 ± 0.9 0.80
 Iron status at study entry in infancy
  Hemoglobin (g/L) 94.2 ± 6.9 123.3 ± 4.0 0.0001
  Mean corpuscular volume (fl) 65.3 ± 4.2 73.8 ± 1.9 0.0001
  Erythrocyte protoporphyrin (μg/dl rbcs) 194.2 ± 76.9 83.1 ± 17.4 0.0001
  Ferritin (μg/l) 8.7 ± 9.03 20.7 ± 13.9 0.0015
Family
 Socioeconomic status index 40.1 ± 9.0 39.0 ± 5.4 0.66
 HOME score in infancy 28.8 ± 5.1 31.2 ± 4.0 0.11
 Father’s education (years) 9.6 ± 3.2 11.7 ± 1.8 0.07
 Mother’s education (years) 9.4 ± 3.1 10.4 ± 1.9 0.23
 Mother’s IQ 82.7 ± 8.8 88.2 ± 11.1 0.08
*

Values are mean ± SD