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Table 3 Distribution of the studied cases according to the Standford Binet IQ test (n = 55)

From: Cognitive functions and anti-oxidant in children with sickle cell disease: A single center based study

IQ result Number (%) of cases (n = 55)
Normal IQ (n = 19):
Group I
Excellent (IQ: 111–120) 1 (1.8%)
Average (IQ: 89–110) 8 (14.5%)
Below average (IQ: 79–88) 10 (18.2%)
Abnormal IQ (n = 36):
Group II
Slow learner (IQ: 68–78) 19 (34.5%)
Mild MR (IQ: 52–67) 13 (23.6%)
Moderate MR (IQ: 36–51) 4 (7.3%)
  1. IQ: intelligence quotient, MR = mental retardation