Table 1.
Descriptive Statistics for Symptom Clusters
| Variable | Cluster 1: Predominantly complex tics | Cluster 2: Simple head/face tics | Cluster 3: Simple body tics | Cluster 4: Simple vocal/facial tics |
|---|---|---|---|---|
| Cluster membership | ||||
| Participants with at least one tic—no. (%) | 84 (84.8)b | 95 (96.0)a | 61 (61.6)c | 86 (86.9)b |
| Cluster score intercorrelations | ||||
| Cluster 1 | 1.00 | |||
| Cluster 2 | 0.280** | 1.00 | ||
| Cluster 3 | 0.407*** | 0.372*** | 1.00 | |
| Cluster 4 | 0.307*** | 0.161 | 0.216* | 1.00 |
*p < 0.05, **p < 0.01, ***p < 0.005. Values in a given row with different superscripts differ significantly at p < 0.05