Table 4. Values and distribution of variables in the classification across the five proposed clusters.
| Life area variables | Cluster 1 (n = 13) |
Cluster 2 (n = 43) |
Cluster 3 (n = 108) |
Cluster 4 (n = 47) |
Cluster 5 (n = 13) |
Statistical test, p |
|---|---|---|---|---|---|---|
| Bipolar disorder | ||||||
| Number of hospitalizations [Mean (SD)] | 0.8 (0.6) | 1.9 (2.6) | 2.0 (2.5) | 2.9 (2.4) | 4.2 (3.1) | 4.397,1 0.002 |
| Number of suicide attempts [Mean (SD)] | 0.4 (0.8) | 0.7 (1.6) | 0.6 (1.1) | 0.9 (1.3) | 2.1 (4.2) | 3.008,1 0.019 |
| Comorbid personality disorder, yes [n (%)] | 0 (0.0) | 1 (2.3) | 17 (15.7) | 14 (29.8) | 9 (69.2) | 37.421,2 <0.0005 |
| Physical health | ||||||
| Body Mass Index [Mean (SD)] | 24.2 (3.4) | 24.9 (3.1) | 27.7 (4.5) | 32.3 (3.7) | 36.2 (7.0) | 30.902,1 <0.0005 |
| Metabolic Syndrome, yes [n (%)] | 1 (7.7) | 5 (12.5) | 28 (26.7) | 19 (41.3) | 5 (38.5) | 12.445,1 0.014 |
| Number of comorbid physical illnesses [Mean (SD)] | 0.5 (0.5) | 0.5 (0.7) | 1.1 (1.3) | 1.7 (1.9) | 2.2 (2.0) | 7.851,1 <0.0005 |
| Cognition | ||||||
| SCIP category, no cognitive impairment [n (%)] | 12 (92.3) | 22 (51.2) | 37 (35.6) | 7 (14.9) | 0 (0.0) | 55.176,2 <0.0005 |
| Real-world functioning | ||||||
| Permanently disabled due to bipolar disorder, yes [n (%)] | 0 (0.0) | 2 (4.7) | 46 (42.6) | 39 (83.0) | 12 (92.3) | 78.5372, <0.0005 |
| FAST total score [Mean (SD)] | 5.9 (6.1) | 13.5 (7.8) | 26.8 (14.3) | 36.4 (13.4) | 47.8 (10.2) | 37.200,1 <0.0005 |
| FAST leisure subscale score [Mean (SD)] | 0.5 (0.8) | 1.1 (1.2) | 2.6 (1.8) | 3.5 (1.9) | 4.5 (1.7) | 20.712,1 <0.0005 |
| Health-related quality of life* | ||||||
| SF-36 physical functioning scale score [Mean (SD)] | 0.4 (0.4) | -0.1 (0.7) | -0.3 (1.0) | -0.8 (1.5) | -1.2 (1.3) | 7.216,1 <0.0005 |
| SF-36 mental health scale score [Mean (SD)] | 0.1 (0.7) | 0.1 (1.0) | -0.7 (1.1) | -0.9 (1.3) | -0.6 (1.2) | 7.257,1 <0.0005 |
Abbreviations: FAST = Functioning Assessment Short Test; SCIP = Scale for Cognitive Impairment in Psychiatry; SD = standard deviation; SF-36 = The MOS 36-item Short-Form Health-Survey.
*. Standardized scores.
1. ANOVA test;
2. Chi-square test.