一般中学生におけるうつ病の有病率―半構造化面接を用いた実態調査

Prevalence Rate of Depressive Disorders in a Community Sample of Adolescents in Japan

抄録

　本研究では，わが国の一般中学生におけるうつ病の有病率について検討を行った。中学1～2年生328名(平均年齢13.3±0.6歳)を対象に，大うつ病，気分変調症，および小うつ病に関する半構造化面接を実施した。その結果，うつ病の時点有病率は4.9％(男子2.2％，女子8.0％)，生涯有病率は8.8％(男子6.2％，女子12.0％)であり，約20人に1人が面接の時点でうつ病の診断基準に該当し，約11人に1人がこれまでにうつ病に罹患した経験があることが示された。自殺念慮はうつ病群の31.3％，非うつ病群の2.6％でみられ，自殺企図の既往歴はうつ病群の18.8％，非うつ病群の1.9％において認められた。

　A community study was conducted to determine the prevalence of DSM-Ⅳ major depressive disorder, dysthymic disorder, and minor depressive disorder among Japanese adolescents aged 12 to 14 years. Diagnoses were based on the Anxiety Disorders Interview Schedule for Children, which was administered to 328 adolescents. The overall current and lifetime prevalence of all depressive disorders were 4.9% (2.2% for boys and 8.0% for girls) and 8.8% (6.2% for boys and 12.0% for girls), respectively. Rates of suicidal ideations and attempts were higher for the currently depressed (31.3% and 18.8%) than the nondepressed (2.6% and 1.9%) sample.