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Table 2 The prevalence of ID/IDA and the comparison of hemoglobin, hematocrit, iron, ferritin, MCV, and RDW levels between age groups in ASD patients

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

  < 6 years, N = 46
N (%)
> 6 years, N = 54
N (%)
RR (95% CI) p*
ID 13 (28.2) 12 (22.2) 1.27 (0.64–2.50) 0.487
IDA 5 (10.8) 8 (14.8) 0.73 (0.25–2.08) 0.559
  Mean (SD) Mean (SD) d p**
Hemoglobin 12.18 (0.92) 13.06 (1.16) 0.840 0.000
Hematocrit 35.05 (2.45) 37.60 (5.63) 0.587 0.006
Iron 55.93 (27.62) 63.60 (30.06) 0.265 0.190
Ferritin 23.75 (17.33) 31.31 (24.96) 0.351 0.087
MCV 70.58 (9.99) 77.37 (5.21) 0.852 0.000
RDW 15.57 (8.41) 13.93 (1.11) − 0.273 0.161
  1. RR relative risk
  2. d Cohen’s d
  3. *Chi-Square test was used, **Independent-Samples t test was used