Summary of the two schemes used to categorise NIHSS sub-scores assessed at 48 hours (N=180, 84 men).
| Category | Score-based grouping | Anatomy-based grouping |
| Level of consciousness | 1a+1 b+1 c | 1a+2 |
| Language | 9+10 | 1b+1 c+9 + 10 |
| Motor | 4+5 a+5 b+6 a+6 b+7 | 4+5 a+5 b+6 a+6b |
| Sensory | 8 | 8+11 |
| Vision | 2+3 | 3 |
| Ataxia | – | 7 |
| Neglect | 11 | – |
The numbers correspond to the standard definition of the 11-item modified NIHSS scale.10 11 Anatomy-based grouping considers neuroanatomy to group the NIHSS components, while score-based grouping follows the design of the NIHSS scale alone.
NIHSS, National Institutes of Health Stroke Scale.