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Table 3 The comparison of hemoglobin, hematocrit, iron, ferritin, MCV, and RDW levels between ASD patients with normal intellectual capacity and intellectual disability

From: Iron deficiency parameters in autism spectrum disorder: clinical correlates and associated factors

  Normal intellectual capacity, N = 42
Mean (SD)
Intellectual disability, N = 58
Mean (SD)
d p
Hemoglobin 12.97 (1.04) 12.42 (1.16) 0.499 0.017
Hematocrit 37.78 (3.05) 35.45 (5.29) 0.539 0.012
Iron 62.87 (29.87) 58.05 (28.57) 0.164 0.416
Ferritin 29.63 (27.61) 26.53 (16.99) 0.135 0.489
MCV 74.01 (10.52) 74.42 (6.66) − 0.046 0.813
RDW 15.48 (8.85) 14.11 (0.99) 0.217 0.244
  1. Independent-Samples t test was used
  2. d Cohen’s d