Table 4

Investigation findings in learning difficulties and control groups

InvestigationLearning difficulties (n=104)Controls (n=80)p Value
Anaemic (%) with haemoglobin < 115.0 g/l12 (11)1 (1.2) 0.007
Iron depleted (%) iron < 11 μmol or saturation < 16%20 (19)7 (9) 0.05
Haemoglobin g/l, mean (SD)123.0 (7.0)128.0 (7.0)< 0.0001
% Saturation, mean (SD)24 (8.4)27.8 (8.4) 0.002
Iron (μmol/l), mean (SD)14.5 (5.1)17.1 (8.0) 0.01
Fragile X detectedNo casesNA
Abnormal TFTsNo casesNA
Abnormal amino acid chromatographyNo casesNA
  • TFTs = thyroid function tests.