| Demographic characteristics |
| Age at study intake, years, mean (s.d.) |
37.00 (11.82) |
| Gender, n (%) |
|
| Female |
12 (86) |
| Male |
2 (14) |
| Ethnicity, n (%) |
|
| White British |
11 (79) |
| White other |
3 (21) |
| |
|
| Clinical characteristics |
| Bipolar disorder, n (%) |
|
| Type 1 |
9 (64) |
| Type 2 |
5 (36) |
| DSM-5 anxiety specifier, n (%) |
|
| Mild |
4 (29) |
| Moderate |
4 (29) |
| Moderate–severe |
6 (43) |
| Comorbidity and clinical course, n (%) |
|
| History of psychosis |
3 (21) |
| Current depressive episode |
7 (50) |
| Current comorbid anxiety disorder |
9 (64) |
| Past comorbid anxiety disorder |
3 (21) |
| History of other Axis I disorders |
5 (36) |
| Bipolar illness variables, mean (s.d.) |
|
| Age at illness onset, years |
21.07 (10.48); range: 7–48 |
| Number of depressive episodes (past 6 months) |
1.29 (0.83); range: 0–3 |
| Duration of depressive episodes (past 6 months) in weeks |
11.67 (6.39); range: 5–20 |
| Number of (hypo)manic episodes (past 6 months) |
0.79 (0.89); range: 0–3 |
| Duration of (hypo)manic episodes (past 6 months) in weeks |
3.13 (2.03); range 1–6 |
| Number of suicide attempts (lifetime) |
0.86 (1.46); range: 0–5 |
| Number of hospitalizations (lifetime) |
0.93 (2.37); range: 0–7 |
| Number of depressive episodes (lifetime), n (%) |
|
| 0–4 episodes |
4 (29) |
| 5–9 episodes |
2 (14) |
| >10 episodes |
8 (57) |
| Medication at screening, n (%) |
|
| Lithium |
6 (43) |
| Anticonvulsants |
5 (36) |
| Antipsychotics |
5 (36) |
| Antidepressants |
3 (21) |
| None |
1 (7) |
