Clinical characteristics at admission.

a: Rate of the number of patients with 5 or greater points in at least one positive symptoms item within disorganization, suspiciousness, delusion and unusual thought content, among each group. b: Rate of the number of patients with 5 or greater points in excitement item among each group. c: Number of patients who required sedation by injected drugs, including haloperidol and/or fulnitrazepam. #: Chi-square test, □: Student t-test, abbreviations: y = years; m = months; number in parentheses indicates standard deviation.