Culturally Appropriate Assessment of Depression and Anxiety in Older Torres Strait Islanders: Limitations and Recommendations

OBJECTIVES

The aim of the study was to assess the prevalence of anxiety and depression in older Aboriginal and Torres Strait Islander adults.

METHODS

A modified version of the PHQ-9 (KICA-dep) and the Geriatric Anxiety Inventory (GAI) were administered as part of a wider dementia prevalence study conducted in the Torres Strait. Results were compared to diagnoses obtained on Geriatric review to evaluate their applicability in the region.

RESULTS

A total of 236 participants completed the KICA-dep and 184 completed the GAI short form. Of these, 10.6% were identified with depression and 15.8% with anxiety. Some participants found questions about suicide ideation and self-harm offensive and others had difficulty understanding concepts on the GAI. The KICA-dep performed poorly in comparison to diagnosis on geriatric clinical review, so results are unlikely to reflect the true prevalence of depression in the region.

CONCLUSIONS

Further research is required to explore the underlying dimensions of depression and anxiety and terminology used to express mood symptoms in the Torres Strait.

CLINICAL IMPLICATIONS

• Current mental health screening tools are not applicable for the Torres Strait• More work is required to determine how symptoms of depression and anxiety are expressed within Torres Strait communities.

A Systematic Review of the Psychometric Properties of the Geriatric Anxiety Inventory

The Geriatric Anxiety Inventory (GAI) and its short form (GAI-SF) are self-reported scales used internationally to assess anxiety symptoms in older adults. In this study, we conducted the first critical comprehensive review of these scales' psychometric properties. We rated the quality of 31 relevant studies with the COSMIN checklist. Both the GAI and GAI-SF showed adequate internal consistency and test-retest reliability. Convergent validity indices were highest with generalized anxiety measures; lowest with instruments relating to somatic symptoms. We detected substantial overlap with depression measures. While there was no consensus on the GAI's factorial structure, we found the short version to be unidimensional. Although we found good sensitivity and specificity for detecting anxiety, cut-off scores varied. The GAI and GAI-SF are relevant instruments showing satisfactory psychometric properties; to broaden their use, however, some psychometric properties warrant closer examination. This review calls attention to weaknesses in the methodological quality of the studies.

Anxiety Symptoms in Older Adults with Depression Are Associated with Suicidality

OBJECTIVE

Anxiety symptoms are common in older adults with depression, but whether severe anxiety is associated with poorer outcomes of depression is unknown. The objective of the present study was to examine the association between severity of anxiety and severity of depression and physical illness, suicidality, and physical and cognitive functioning in older adults with depression.

METHODS

We included 218 older adults with diagnoses of a depressive disorder according to the ICD-10 criteria; their mean age (SD) was 75.6 (7.2), and 67.0% were women. The Geriatric Anxiety Inventory (GAI) was used to measure the severity of anxiety symptoms. The Montgomery-Aasberg Depression Rating Scale (MADRS) was used to assess the severity of depression. We obtained information on the level of functioning with the Physical Self-Maintenance Scale (PSMS) by Lawton and Brody and on cognition with the Mini-Mental State Examination (MMSE) and the Clock-Drawing Test (CDT). Physical health was determined based on information regarding falls and weight loss and an assessment of each patient's general medical condition. The treating physician evaluated current suicidality in a comprehensive and standardized way.

RESULTS

Higher GAI scores were significantly associated with scores on the MADRS (β = 0.233, p = 0.002) and suicidality (β = 0.206, p = 0.006). Levels of physical or cognitive functioning were not associated with the GAI score.

CONCLUSION

The severity of anxiety symptoms was associated with the severity of depression and suicidality in older adults with depressive disorders. The results could indicate a need to focus greater attention on the treatment of anxiety and suicidality in older patients with depression.

Psychometric properties of the French Canadian version of the Geriatric Anxiety Inventory

BACKGROUND

The Geriatric Anxiety Inventory (GAI) and a short form of this instrument (GAI-SF) were developed to assess the severity of anxiety symptoms in older adults in order to compensate for the lack of validated screening tools adapted to the elderly population. This study examined the psychometric properties of the French Canadian version of the GAI, in its complete (GAI-FC) and short form (GAI-FC-SF).

METHOD

A total of 331 community-dwelling seniors between 65 and 92 years old participated in this study.

RESULTS

Both the GAI-FC and the GAI-FC-SF have sound psychometric properties with, respectively, a high internal consistency (α = .94 and .83), an adequate convergent validity (r = .50 to .86 with instruments known to evaluate constructs similar to the GAI or related to anxiety), a good test-retest reliability (r = .89 and .85), in addition to a single-factor structure.

CONCLUSIONS

The results support the use of both the GAI-FC and the GAI-FC-SF. The GAI-FC-SF seems to be an interesting alternative to the GAI-FC as a screening tool when time available for assessment is limited.

Validation of the Brazilian Portuguese Version of Geriatric Anxiety Inventory--GAI-BR

BACKGROUND

The Geriatric Anxiety Inventory (GAI) is a recently developed scale aiming to evaluate symptoms of anxiety in later life. This 20-item scale uses dichotomous answers highlighting non-somatic anxiety complaints of elderly people. The present study aimed to evaluate the psychometric properties of the Brazilian Portuguese version GAI (GAI-BR) in a sample from community and outpatient psychogeriatric clinic.

METHODS

A mixed convenience sample of 72 subjects was recruited for answering the research protocol. The interview procedures were structured with questionnaires about sociodemographic data, clinical health status, anxiety, and depression previously validated instruments, Mini-Mental State Examination, Mini International Neuropsychiatric Interview, and GAI-BR. Twenty-two percent of the sample were interviewed twice for test-retest reliability. For internal consistency analyses, the Cronbach's α test was applied. The Spearman correlation test was applied to evaluate the test-retest GAI-BR reliability. A ROC (receiver operating characteristic) curve study was made to estimate the GAI-BR area under curve, cut-off points, sensitivity, and specificity for the Generalized Anxiety Disorder diagnosis.

RESULTS

The GAI-BR version showed high internal consistency (Cronbach's α = 0.91) and strong and significant test-retest reliability (ρ = 0.85, p < 0.001). It also showed moderate and significant correlation with the Beck Anxiety Inventory (ρ = 0.68, p < 0.001) and the State-Trait Anxiety Inventory (ρ = 0.61, p < 0.001) showing evidence of concurrent validation. The cut-off point of 13 estimated by ROC curve analyses showed sensitivity of 83.3% and specificity of 84.6% to detect Generalized Anxiety Disorder (DSM-IV).

CONCLUSION

GAI-BR has demonstrated very good psychometric properties and can be a reliable instrument to measure anxiety in Brazilian elderly people.

Psychometric properties of the Geriatric Anxiety Inventory (GAI) and its short-form (GAI-SF) in a clinical and non-clinical sample of older adults

BACKGROUND

The Geriatric Anxiety Inventory is a 20-item geriatric-specific measure of anxiety severity. While studies suggest good internal consistency and convergent validity, divergent validity from measures of depression are weak. Clinical cutoffs have been developed that vary across studies due to the small clinical samples used. A six-item short form (GAI-SF) has been developed, and while this scale is promising, the research assessing the psychometrics of this scale is limited.

METHODS

This study examined the psychometric properties of GAI and GAI-SF in a large sample of 197 clinical geriatric participants with a comorbid anxiety and unipolar mood disorder, and a non-clinical control sample (N = 59).

RESULTS

The internal consistency and convergent validity with other measures of anxiety was adequate for GAI and GAI-SF. Divergent validity from depressive symptoms was good in the clinical sample but weak in the total and non-clinical samples. Divergent validity from cognitive functioning was good in all samples. The one-factor structure was replicated for both measures. Receiver Operating Characteristic analyses indicated that the GAI is more accurate at identifying clinical status than the GAI-SF, although the sensitivity and specificity for the recommended cutoffs was adequate for both measures.

CONCLUSIONS

Both GAI and GAI-SF show good psychometric properties for identifying geriatric anxiety. The GAI-SF may be a useful alternative screening measure for identifying anxiety in older adults.