Table 3.
Relationship of periodic complexes with clinical and imaging variables
| Variable | PSWC present | PSWC absent | Chi-square test value | df | P | |
|---|---|---|---|---|---|---|
| Gender | Male | 20 | 11 | .08 | 1 | 0.78 |
| Female | 13 | 6 | ||||
| Duration of illness | < 3 months | 19 | 11 | 0.24 | 1 | 0.63 |
| > 3 months | 14 | 6 | ||||
| Myoclonus | Present | 23 | 10 | 0.004 | 1 | 0.95 |
| Absent | 12 | 5 | ||||
| Dementia | Present | 30 | 14 | |||
| Absent | 3 | 3 | ||||
| Psychiatric disturbances | Present | 26 | 12 | 0.41 | 1 | 0.52 |
| Absent | 7 | 5 | ||||
| Extrapyramidal Symptoms/signs | Present | 20 | 8 | 0.84 | 1 | 0.36 |
| Absent | 13 | 9 | ||||
| Ataxia | Present | 6 | 9 | 6.45 | 1 | 0.01 |
| Absent | 27 | 8 | ||||
| Pyramidal signs | Present | 16 | 2 | |||
| Absent | 17 | 15 | ||||
| Akinetic mutism | Present | 12 | 4 | 0.85 | 1 | 0.36 |
| Absent | 21 | 13 | ||||
| Visual symptoms | Present | 4 | 5 | 2.27 | 1 | 0.13 |
| Absent | 29 | 12 | ||||
| Seizures | Present | 2 | 0 | |||
| Absent | 31 | 17 | ||||
| Cortical ribbon in MRI brain | Present | 31 | 15 | |||
| Absent | 2 | 2 | ||||
| Basal ganglia signal changes | Present | 23 | 15 | |||
| Absent | 10 | 2 | ||||
| Thalamic signal changes | Present | 9 | 8 | 1.96 | 1 | 0.16 |
| Absent | 24 | 9 |