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Table 2 Scoring system for the WNV-N Index

From: Identifying risks for severity of neurological symptoms in Hungarian West Nile virus patients

Neurological symptom   assigned points
Localisation of muscle weakness normal 0
lower body 0.5
upper body 0.25
lower body +upper body 1
Degree of muscle weaknessa normal 0
25% weak 1
50% weak 2
75% weak 3
can just move against gravity 3.25
can just move with gravity eliminated 3.5
muscle contraction can be felt or seen but no visible movement 3.75
paralysis 4
Reflex involvement (decreased/absent) yes 1
no 0
Sensory involvement (decreased/absent) yes 1
no 0
Dizziness yes 1
no 0
Gait uncertainty yes 0.5
no 0
Tremor yes 0.5
no 0
Photophobia yes 0.5
no 0
Speech impairment yes 0.5
no 0
Slow speech yes 0.5
no 0
Confusion, altered mind state yes 0.5
no 0
Diplopia yes 0.5
no 0
Headache yes 0.5
no 0
  1. a Based on the principles of the Neuropathy Impairment Score [20]