Table 6

Comparisons of initial and repeat lithium maintenance treatment trials

Measures on lithium Initial Repeat Statistic
Subjects were 85 patients with bipolar I or II disorder. By paired t-tests (84 d.f.) or χ2 (1 d.f.), all comparisons are not significant. Also, there were no significant differences in percentage of time ill during first and second lithium trials in bipolar disorder type I (16.3 ± 17.4% v. 20.4 ± 22.7%) or type II patients (18.1 ± 27.6% v. 26.2 ± 29.0%) considered separately.
Duration (years (s.d.)) 4.90 (3.98) 4.42 (3.49) t=0.77
Episodes/year (s.d.) 0.842 (1.172) 0.959 (1.243) t=0.67
Percentage of time ill (s.d.) 17.0 (22.0) 22.8 (25.4) t=1.71
Hospitalisations/year (s.d.) 0.091 (0.315) 0.057 (0.158) t=1.02
Having no recurrences (%) 30.6 25.9 χ 2=0.46