Table 3.
Comparison of the clinical variables of the lithium, carbamazepine, and sodium valproate groups
| Variables | Lithium group | Carbamazine group | Sodium valproate group | |||
|---|---|---|---|---|---|---|
| n | χ2 (df), P | n | χ2 (df), P | n | χ2 (df), P | |
| Sex | ||||||
| Male | 16 | 2.71 (1), 0.100 | 14 | 2.14 (1), 0.143 | 13 | 1.12 (1), 0.290 |
| Female | 14 | 6 | 4 | |||
| Family history | ||||||
| Nil | 14 | 6.73 (2), 0.034 | 13 | 2.05 (2), 0.359 | 10 | 3.66 (2), 0.160 |
| Affective | 15 | 4 | 6 | |||
| Nonaffective | 1 | 3 | 1 | |||
| Number of past manic episode | ||||||
| Nil | 26 | 1.36 (2), 0.507 | 16 | 2.14 (2), 0.343 | 11 | 4.53 (2), 0.103 |
| One | 3 | 3 | 3 | |||
| Two | 1 | 1 | 3 | |||
| Past number of depressive episodes | ||||||
| One | 22 | 1.09 (2), 0.295 | 16 | 0.95 (2), 0.329 | 15 | 7.36 (2), 0.007 |
| Two | 8 | 4 | 2 | |||
| Type of onset of index episode | ||||||
| Abrupt | 9 | 2.40 (2), 0.300 | 8 | 2.84 (2), 0.241 | 12 | 0.04 (2), 0.825 |
| Acute | 17 | 11 | 5 | |||
| Insidious | 4 | 1 | 0 | |||
| Total number of episodes (including index episode) | ||||||
| One | 20 | 0.54 (2), 0.761 | 14 | 0.68 (2), 0.712 | 10 | 7.72 (2), 0.021 |
| Two | 7 | 5 | 3 | |||
| Three | 3 | 0 | 4 | |||
| Four | 0 | 1 | 0 | |||
df – Degree of freedom; χ2 – Chi-square value; P<0.05