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Table 2 Characteristics of patients with iron deficiency anemia (IDA) and control subjects

From: Association between psychiatric disorders and iron deficiency anemia among children and adolescents: a nationwide population-based study

Characteristics IDA Control p-value
No. 2957 11828  
Age (years) 10.59 ± 6.02 10.59 ± 6.02  
Sex, N (%)    
Male 1060 (35.8) 4240 (35.8)  
Female 1897 (64.2) 7588 (64.2)  
Associated diseases, N (%)    
Schizophrenia 8 (0.3) 14 (0.1) 0.063
Unipolar depressive disorder 48 (1.6) 66 (0.6) <0.001
Bipolar disorder 13 (0.4) 7 (0.1) <0.001
OCD 4 (0.1) 8 (0.1) 0.274
Anxiety disorder 45 (1.5) 80 (0.7) <0.001
ASD 24 (0.8) 32 (0.3) <0.001
ADHD 84 (2.8) 207 (1.8) <0.001
Tic disorder 23 (0.8) 56 (0.5) 0.044
Delayed development 154 (5.2) 278 (2.4) <0.001
Mental retardation 75 (2.5) 114 (1.0) <0.001
  1. IDA iron deficiency anemia, OCD obsessive-compulsive disorder, ASD autistic spectrum disorder, ADHD attention-deficit and hyperactivity disorder.