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Table 1 Baseline characteristics of the 346 study subjects

From: Stability of lithium treatment in bipolar disorder - long-term follow-up of 346 patients

Men, n (%) 147 (42.5)
Women, n (%) 199 (57.5)
DSM IV diagnosis, n (%)  
 Bipolar I 270 (78.0)
 Bipolar II 76 (22.0)
Length of follow-up period (year, SD, range) 10.0 (6.2, 1 to 20)
Age at onset of bipolar disorder (year, SD, range) 29.2 (11.0, 11 to 66)
Latency before start of lithium treatment (year, SD, range) 9.7 (9.3, 0 to 44)
Number of episodes before start of lithium treatment (n, SD, range) 5.5 (4.9, 0 to 40)
Comedication in all 346 patients (mean number of weeks [per follow-up year] during which any drugs from three different drug categories were administered; n, SD, range)  
 Total 9.8 (17.7, 0 to 91)
 Antipsychotics 2.5 (7.9, 0 to 52)
 Antidepressants 3.5 (9.4, 0 to 52)
 Anticonvulsants 3.8 (10.5, 0 to 52)
Comedication in 152 patients without lithium monotherapy (mean number of weeks [per follow-up year] during which any drugs from three different drug categories were administered; n, SD, range)  
 Total 22.4 (20.9, 0 to 91)
 Antipsychotics 5.6 (11.1, 0 to 52)
 Antidepressants 8.0 (12.9, 0 to 52)
 Anticonvulsants 8.8 (14.4, 0 to 52)