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Table 5 Optimal Splits and Mean/Median Age at First Diagnosis Above/Below Split

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

Clinical Signs & Symptoms Split Mean Above Mean Below p-value* Median Above Median Below
Delayed speech 5.75 34.9 63.7 0.00000 30 58
Delayed response to own name 3.85 35.6 60.4 0.00000 32 52
Poor eye contact 6.15 40.5 52.1 0.00000 33 42
Lack of gestures 6.05 33.6 56.7 0.00000 30 48
Difficulty understanding gestures 3.75 41.1 54.9 0.00000 34 47
Preference to play alone 7.55 42.3 50.7 0.00000 36 40
Too focused on objects 1.05 44.8 61.6 0.00000 36 54
Poor social skills 5.25 43.2 53.9 0.00000 36 42
Unusual play with toys or objects 5.55 41.3 52.7 0.00000 35 42
Need for sameness 2.35 47.4 35.1 0.00000 38 31
Unusual motor mannerisms 3.15 42.6 52.7 0.00000 35 40
Unusual sensory interest 1.65 47.3 35.2 0.00000 38 28
Sensory hyperreactivity 8.55 39.4 47.3 0.00019 33 38
Sensory hyporeactivity 1.75 44.5 51.2 0.00042 36 39
Temper tantrums 2.35 48.2 39.6 0.00000 38 32
Aggression toward self 2.65 51.4 43.3 0.00000 40 36
Aggression toward others 2.15 50.8 41.9 0.00000 41 34
Loss of skills 5.15 39.8 47.5 0.00011 35 38
Loss of language (words only) 5.8 34.8 49.3 0.00000 30 39
Loss of language (phrases) 7.25 35.7 48.0 0.00000 32 38
Difficulty initating on maintaing relationships “n.a.” “n.a.” “n.a.” “n.a.” “n.a.” “n.a.”
Unusual interest in objects or toys “n.a.” “n.a.” “n.a.” “n.a.” “n.a.” “n.a.”
Less social engagement “n.a.” “n.a.” “n.a.” “n.a.” “n.a.” “n.a.”
Loss of motor skills “n.a.” “n.a.” “n.a.” “n.a.” “n.a.” “n.a.”
Loss of daily living skills “n.a.” “n.a.” “n.a.” “n.a.” “n.a.” “n.a.”
  1. * The p-value is for the difference between the means