Table 1.
Demographics IPS impaired and preserved patients and HC.
| IPS impaired |
IPS preserved |
HC |
Test statistic |
P-value |
|
|---|---|---|---|---|---|
| N | 130 | 200 | 96 | ||
| Age, years | 50.01 (11.33) | 46.93 (10.74) | 45.87 (10.45) | F = 4.80 | 0.01a, c |
| Women/men | 85/45 | 140/60 | 56/40 | χ2 = 3.96 | 0.14 |
| Educational level, years* | 4.00 (3.00–6.00) | 5.00 (4.00–6.00) | 6.00 (4.00–7.00) | H = 12.65 | 0.002a, b |
| RRMS/SPMS/PPMS | 83/31/16 | 160/20/20 | – | χ2 = 0.59 | 0.002 |
| Symptom duration, years* | 15.82 (7.8–21.59) | 9.80 (6.63–20.32) | – | H = 7.09 | 0.001 |
| EDSS* | 4.0 (3.0–6.0)) | 3.0 (2.00–4.00) | – | H = 28.318 | 0.04 |
| SDMT | 37 (8.6) | 58 (8.9) | 61 (9.81) | F = 255.73 | 0.001a, b, c |
IPS: information processing speed; RRMS: relapsing remitting multiple sclerosis; SPMS: secondary progressive multiple sclerosis; PPMS: primary progressive multiple sclerosis; EDSS: expanded disability status scale. * not normally distributed data for which median (interquartile range) are provided.. Test statistics were provided for the statistical analyses that was used to compare the three groups.
a
Significant difference between IPS impaired and HC.
b
Significant difference between IPS preserved and HC.
c
Significant difference between IPS impaired and IPS preserved.