Table 4

Clinical factors: morbidity during lithium maintenance

Variable Time ill (% (s.d.))
1.For diagnostic type, by analysis of variance [I; 358 d.f.]; F=5.57, P=0.02; no other difference is significant. D, depression; M, mania; I, euthymic interval; RC, rapid cycling.
Diagnostic type1
Bipolar I 22.0 (22.0)
Bipolar II 16.5 (21.0)
Bipolar I subtypes
Typical 23.9 (24.2)
Psychotic 19.9 (19.5)
Mixed 23.3 (22.1)
Polarity sequence
M-D-I 17.7 (15.7)
D-M-I 19.2 (21.4)
Cycling rate
RC 22.0 (23.8)
Non-RC 19.5 (21.4)