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  • Title: Suicidal risks among 2826 Sardinian major affective disorder patients.
    Author: Tondo L, Lepri B, Baldessarini RJ.
    Journal: Acta Psychiatr Scand; 2007 Dec; 116(6):419-28. PubMed ID: 17997721.
    Abstract:
    OBJECTIVE: We estimated risks of suicidal behaviors in 2826 mood-disorder patients evaluated and followed in a Sardinian mood disorders research center over the past 30 years. METHOD: We determined rates of suicidal ideation, attempts, and suicides, with associated risk factors, in men and women with DSM-IV bipolar I (BP-I; n = 529), BP-II; (n = 314), or major depressive disorders (MDD; n = 1983), at risk for an average of 11 years of illness. RESULTS: Observed rates (% of patients/year) of suicide ranked: BP-II (0.16) > or = BP-I (0.14) > MDD (0.05); attempts: BP-I (1.52) > BP-II (0.82) > MDD (0.48); ideation: BP-II (42.7) > MDD (33.8) > BP-I (22.7). The ratio of attempts/suicides (lethality index) ranked: BP-II (5.12) < MDD (9.60) < or = BP-I (10.8). Male/female risk-ratios were greater for suicide than attempts or ideation. One-third of all reported acts occurred within the first year of illness, and earliest among MDD patients. Factors associated independently with suicidal acts included BP diagnosis, hospitalizations/person, and early illness-onset; factors associated with suicidal ideation were having an affective temperament, BP-II diagnosis, and higher suicidality-corrected depression score at intake. CONCLUSION: Suicidal behaviors were more prevalent among BPD than MDD out-patients.
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