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. 2021 Feb 3;16:63. doi: 10.1186/s13023-021-01686-8

Table 1.

Severity score including 5 items, each being rated from 0 (worst score) to 3 (best score)

Score
Head circumference
 Normal head circumference for age 3
 Head circumference between − 2 SD and − 3 SD (limits included) 2
 Head circumference between − 3 SD and − 5 SD (limits excluded) 1
 Head circumference equal to or below − 5 SD 0
Weight/height
 Absence of growth delay 3
 Weight and/or height between − 2 SD and − 3 SD (limits included) 2
 Weight and/or height between − 3 SD and − 5 SD (limits excluded) 1
 Weight and/or height equal to or below − 5 SD 0
Neurosensorial symptoms
 No neurosensorial symptom 3
 Neurosensorial symptoms from one or two categoriesa 2
 Neurosensorial symptoms from three categoriesa 1
 Neurosensorial symptoms from four categoriesa 0
Autonomy/motor development
 Normal motor skills for age 3
 Moderate motor impairment/motor delay 2
 Severe motor impairment/motor delay (or no standing position after 2 years of age) 1
 No motor development/bedridden 0
Communication
 Normal communication and language for age 3
 Moderate communication impairment/speech delay 2
 Severe communication impairment (or non-verbal communication only after 2 years) 1
 No communication 0
Total 15

SD standard deviation

aNeurosensorial categories: 1—cerebellar signs (ataxia, action tremor, cerebellar dysarthria); 2—pyramidal or extrapyramidal signs (spasticity, rigidity, akinesia); 3—peripheral nerve involvement (hyporeflexia or areflexia); 4—sensorial impairment (neurosensorial hearing loss, retinopathy, cataracts)