Table 1 Sample characteristics for eligible publications (listed by year of publication)
| Publication | Country | Sample size (n) | Gender (% males)b | Age groups (age range in years and number of participants per group)a | Setting | BD subtypes | ||
|---|---|---|---|---|---|---|---|---|
| Child | Adolescent | Adult | ||||||
| Ballenger et al. (1982) | USA | 21 | NK |
<21 (n = 9) |
>30 (n = 12) | Inpatient | BD-I (mania) | |
| McElroy et al. (1997) | USA | 128 | 43% |
12–18 (n = 40) |
19–45 (n = 88) | Inpatient | BD-I (mania) | |
| Findling et al. (2001) | USA | 90 | 71% |
5–11 (n = 56) |
12–17 (n = 34) | Outpatient | BD-I | |
| Jerrell and Shugart (2004) | USA | 267 | 52% |
7–17 (n = 83) |
18–59 (n = 184) | Inpatient and outpatient | BD-I | |
| Lazaro et al. (2007) | Spain | 43 | 40% |
< 13 (n = 14) |
≥13 (n = 29) | Outpatient | BD-I, BD-II and BD-NOS | |
| Birmaher et al. (2009)c | USA | 263 | 53% |
4–11 (n = 173) |
<12 (n = 90) | Inpatient and outpatient | BD-I, BD-II and BD-NOS | |
| Song et al. (2010) | Korea | 53 | 59% |
NK (n = 16) |
NK (n = 37) | Inpatient | BD-I, BD-II and BD-NOS | |
| Chan et al. (2011) | UK | 35 | 51% |
7–12 (n = 9) |
13–18 (n = 26) | Outpatient | BD-I, BD-II and BD-NOS | |
| Safer et al. (2012) | USA | 1106 | NK |
10–17 (n = 457) |
18–65 (n = 649) | Inpatient and outpatient | BD-I (mania) | |