The incidence of first-onset depression in a population followed from the age of 70 to 85

被引:107
作者
Pálsson, SP [1 ]
Östling, S [1 ]
Skoog, I [1 ]
机构
[1] Univ Gothenburg, Sahlgrens Univ Hosp, Dept Psychiat, Inst Clin Neurosci, S-41345 Gothenburg, Sweden
关键词
D O I
10.1017/S0033291701004524
中图分类号
B849 [应用心理学];
学科分类号
040203 ;
摘要
Background. Due to the limited data available, it is not clear whether the incidence of first-onset depression varies with age in the elderly. Methods. A representative sample of individuals born 1901-2 (N = 392) was examined at the ages of 70, 75, 79, 81, 83 and 85 years by psychiatrists using a semi-structured schedule. Information on depressive episodes was also collected from self-report and examination of case records. Depression was diagnosed according to the DSM-III-R criteria. Results. The incidence of depression was 12 per 1000 person-years in men and 30 per 1000 person-years in women between the ages of 70 and 85 (sex difference P = 0.001). The incidence increased from 17 per 1000 person-years (men 8.7, women 23.2, P = 0.007) between the ages of 70 and 79 to 44 per 1000 person years (men 27.0, women 52.8, P = 0.166) between 79 and 85 (age difference: RR 2.6, P < 0.001; men RR 3.1, P = 0.036; women RR 2.3, P = 0.003). A diagnosis of depression was associated with increased mortality and refusal rate during the 15-year follow-up. Previous episodes of depression were associated with an increased risk of further episodes. The prevalence of depression increased from 5.6% at the age of 70 to 13.0% at the age of 85. The lifetime prevalence of depression was 23% in men and 45% in women. Conclusions. Both the incidence and prevalence of depression increased with age in this longitudinally followed birth cohort, and the incidence was higher in women than in men.
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页码:1159 / 1168
页数:10
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