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Table 4 Co-morbidity of the other stereotypic behavior in the children with nail biting

From: Association of nail biting and psychiatric disorders in children and their parents in a psychiatrically referred sample of children

Disorder Total (%) Boy (%) Girl (%)
Lip biting (n = 21) 33.3 26.8 45.5
Bruxism (n = 17) 27 22 36.4
Head banging (n = 11) 17.5 22 9.1
Skin biting (n = 8) 12.7 14.6 9.1
Hair pulling (n = 7) 11.1 7.3 18.2
one or more co-morbid stereotypic behaviors 65.1 58.5 77.3