Geriatric depression: prevalence, risk factors, and relationship to physical illnesses in a sample of medical clinic outpatients

Prevalence of depression and anxiety in older people in low- and middle- income countries in Africa, Asia and South America: A systematic review and meta-analysis

BACKGROUND

There is rapid growth of older people in Low- and Middle- Income Countries (LMICs). The aim of this review was to assess the literature on prevalence of anxiety and depression in this demographic, which to our knowledge, has not yet been conducted.

METHODS

Databases including Medline, PsychInfo, Embase, Scielo and African Journals Online were searched for terms including "mental disorders", "neurotic disorders", "mood disorders" and "anxiety disorders". Studies published between 1990 and 2020 providing data on older people (≥50 years) in LMICs (defined by World Bank Criteria) were included and quality-assessed. Meta-analysis was conducted on a subset of higher-quality studies to derive pooled prevalence estimates of depression.

RESULTS

One hundred and forty relevant studies were identified, of which thirty-two were included in meta-analysis. One hundred and fifteen studies reported depression prevalence only, 19 reported both depression and anxiety, and six reported anxiety only. In all studies identified, depression prevalence ranged from 0.5 % to 62.7 %, and Generalised Anxiety Disorder prevalence ranged from 0.2 % to 32.2 %. The pooled prevalence of depression on meta-analysis was 10.5 % (95 % CI, 8.9 % - 11.2 %). Reported prevalence rates of depression were significantly different in studies using ICD-10 compared with DSM criteria, and between community and clinical settings.

LIMITATIONS

The search strategy contained bias towards English language papers and high income country (HIC) publications. There is significant heterogeneity within the meta-analysis.

DISCUSSION

A wide range of methodologies and clinical criteria are used in prevalence studies of depression and anxiety in older people. Studies using screening tools found higher prevalence rates; clinicians and researchers should ensure diagnosis is made with gold-standard clinical criteria. Meta-analysis data suggest that rates of depression are similar in older people in LMICs compared to HICs but mental healthcare resources are limited, suggesting a large potential treatment gap.

Measuring suicide risk in the elderly with non-institutionalized depression: an integrative review

OBJECTIVE

Analyze the state of the art about instruments, at national and international levels, for assessing the risk of suicide in elderly people with depression assisted in the community.

METHODS

Integrative review of 38 complete articles, published in journals indexed in the databases: US National Library of Medicine (PubMed Central), Scopus, CINAHL and Web of Science, located using controlled descriptors combined with Boolean operators: elderly OR aged OR older OR elder OR geriatric AND depression AND suicide AND risk assessment.

RESULTS

Six instruments were found, all international and published in the English language, in order to identify suicidal behavior and ideation in the elderly. Of these, two are specific scales for assessing the risk of suicide in the elderly in the community: 5-item GDS subscale and Geriatric Suicide Ideation Scale.

FINAL CONSIDERATIONS

With the scarcity of national instruments to assess such risk, research is recommended to cross-culturally adapt one of these scales to the Brazilian Portuguese language.