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Table 1 Reported Clinical Signs & Symptoms and Level of Severity

From: Clinical signs associated with earlier diagnosis of children with autism Spectrum disorder

Clinical Signs & Symptom Obs. Level of Severity on a 0–10 scale
Mean Median Std. % Non Zero
Social and Communication
 Delayed speech 1609 6.18 7.40 3.58 0.83
 Delayed response to name 1609 4.66 4.90 3.51 0.77
 Poor eye contact 1609 6.07 6.30 2.99 0.91
 Lack of gestures (e.g., pointing, nodding or shaking head) 1609 5.23 5.30 3.54 0.82
 Difficulty understanding gestures 1609 5.08 5.20 3.38 0.83
 Preference to play alone or play with objects rather than with others 1609 7.10 7.80 2.90 0.93
 More focus on objects than people 1609 6.79 7.50 2.96 0.92
 Failure to initiate or respond to social interactions 1609 6.94 7.70 2.80 0.94
 Difficulties in initiating and/or maintaining relationships and friendships 1609 7.48 8.30 2.81 0.94
Restricted and Repetitive behaviors
 Played with toys or objects in an unusual way (e.g. repetitive play, lining up toys) 1609 6.19 6.60 3.02 0.92
 Need for sameness (e.g. difficulties with changes in routine) 1330 6.30 6.90 3.01 0.76
 Unusual motor mannerisms (e.g. hand flapping, spinning) 1330 5.29 5.40 3.41 0.71
 Unusual interest in specific objects or toys (e.g. high in intensity or focus) 1330 6.45 7.10 3.00 0.75
Sensory Symptoms
 Unusual interest in sensory aspects of the environment (e.g. excessive smelling of objects or people, fascination with lights or movement) 1609 4.77 4.90 3.16 0.86
 Sensory hyperreactivity (e.g. excessive or adverse response to specific sounds, lights, touch, smell or tastes) 1609 6.16 6.50 3.01 0.93
 Sensory hyporeactivity (e.g. insensitivity or indifference to sensory pain or temperature, slow response to sensory stimuli in the environment) 1609 4.81 5.00 3.39 0.83
Aggression
 Temper tantrums 1609 4.85 5.00 3.20 0.85
 Aggression toward self 1609 2.48 1.30 3.01 0.60
 Aggression toward others 1609 2.65 1.80 3.01 0.64
Regression (At some point in time, did x’s behavior regress (deteriorate) in any of the following ways?)
 Loss of skills 1609 2.31 0.10 3.12 0.50
 Loss of language (words only) 1609 2.68 0.10 3.60 0.49
 Loss of language (phrases) 1609 2.16 0.00 3.46 0.41
 Less social engagement 1609 2.96 1.20 3.49 0.56
 Loss of motor skills 1609 1.18 0.00 2.36 0.35
 Loss of daily living skills 1609 1.56 0.00 2.80 0.38
  1. The smaller number of observations for three of the clinical signs was the result of a technical problem that resulted in a loss of data