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Table 1 Childhood (<10 Years of Age), adolescence (>10 Years of Age) and lifetime prevalence of catatonic features in 18 youngsters suffering from Schizophrenia

From: Catatonic features in adolescents with schizophrenia with and without a comorbid pervasive developmental disorder

Feature Childhood Adolescence Lifetime
Movement   
Odd gait 7/18 (38.9%) 5/18 (27.8%) 8/18 (44.4%)
Poor coordination 4/18 (22.2%) 7/18 (38.9%) 8/18 (44.4%)
Odd hand postures 0/18 (0.0%) 2/18 (11.1%) 2/18 (11.1%)
Runs in circles 0/18 (0.0%) 0/18 (0.0%) 0/18 (0.0%)
Rocks while sitting 2/18 (11.1%) 7/18 (38.9%) 8/18 (44.4%)
Complex body movements 0/18 (0.0%) 4/18 (22.2%) 4/18 (22.2%)
Walks on tiptoe 2/18 (11.1%) 1/18 (5.6%) 2/18 (11.1%)
Grimaces 2/18 (11.1%) 4/18 (22.2%) 5/18 (27.8%)
Lacks facial expression 4/18 (22.2%) 17/18 (94.4%) 17/18 (94.4%)
Speech and vocalization   
Immediate echolalia 2/18 (11.1%) 0/18 (0.0%) 2/18 (11.1%)
Delayed echolalia 4/18 (22.2%) 5/18 (27.8%) 8/18 (44.4%)
Odd intonation 4/18 (22.2%) 14/18 (77.8%) 14/18 (77.8%)
Shrieks for no reason 1/18 (5.6%) 3/18 (16.7%) 3/18 (16.7%)
Laughs for no reason 0/18 (0.0%) 8/18 (44.4%) 8/18 (44.4%)
Behavior   
Eye contact   
Poor eye contact 5/18 (27.8%) 14/18 (77.8%) 14/18 (77.8%)
Sideways glances 2/18 (11.1%) 5/18 (27.8%) 5/18 (27.8%)
Blank look in eyes 2/18 (11.1%) 9/18 (50.0%) 10/18 (55.6%)
Stares 3/18 (16.7%) 7/18 (38.9%) 7/18 (38.9%)
Visual fascinations   
Spins objects 0/18 (0.0%) 0/18 (0.0%) 0/18 (0.0%)
Twists hands near eyes 0/18 (0.0%) 0/18 (0.0%) 0/18 (0.0%)
Closely inspects objects from different angles 0/18 (0.0%) 0/18 (0.0%) 0/18 (0.0%)
Unsocial behavior   
Shouts for no reason 5/18 (27.8%) 8/18 (44.4%) 8/18 (44.4%)
Aggressive for no reason 2/18 (11.1%) 8/18 (44.4%) 8/18 (44.4%)
Lack of cooperation 8/18 (44.4%) 14/18 (77.8%) 15/18 (83.3%)
Destructive 6/18 (33.3%) 7/18 (38.9%) 10/18 (55.6%)
Strips in public 4/18 (22.2%) 6/18 (33.3%) 6/18 (33.3%)
Inappropriate personal habits 1/18 (5.6%) 1/18 (5.6%) 1/18 (5.6%)
Hyperactive 1/18 (5.6%) 3/18 (16.7%) 4/18 (22.2%)