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Introduction: Depression in the elderly is frequently detected by screening instruments and often accompanied by anxiety. We set out to study if anxiety will affect the ability to detect depression by a screening instrument., Objective: To validate the short Zung depression rating scale in Israeli elderly and to study the affect of anxiety on its validity., Design: The short Zung was validated against a psychiatric evaluation, in a geriatric inpatient and outpatient service. The overall validity was determined, as well as for subgroups of sufferers and non-sufferers of anxiety., Setting: An urban geriatric service in Israel., Patients: 150 medical inpatients and outpatients, aged 70 years and older., Measures: Psychiatric evaluation of modified Anxiety Disorders Interview Schedule for DSM-IV as criterion standard for anxiety and depression and short Zung instrument for depression., Results: By criterion validity, 60% suffered from depression. The overall validity of the short Zung was high (sensitivity 71.1%, specificity 88.3%, PPV 90.1%, NPV 67.1%). The validity for those not suffering from anxiety was good (sensitivity 71.1%, specificity 90.2%, PPV 84.4%, NPV 80.7%). In those with anxiety, sensitivity, specificity and PPV were high (71.2%, 77.8%, 94.9% respectively), although the specificity was less than in non-suffers. However major difference was in the NPV rate being much lower (31.8%)., Conclusion: The short Zung, an easily administered instrument for detecting depression, is also valid in the Israeli elderly. However, anxiety limits the usefulness of this instrument in correctly ruling out depression. The clinician must be aware, therefore, that those suffering from anxiety may score negatively for depression on a screening instrument, such as the short Zung., (Copyright 2002 John Wiley & Sons, Ltd.) more...

Introduction: The Short Anxiety Screening Test (SAST), an easily administered rating scale, was developed to standardize the detection of anxiety disorder in the elderly, even, and especially, in the presence of depression. The instrument also included somatic complaints, often the manifestation of anxiety in the elderly. Failure to relate to the anxiety component in depression may result in the initial failure of antidepressant therapy., Objective: To validate the SAST in the elderly, especially in the presence of depression., Design: The SAST was validated against a psychiatric evaluation in consecutive patients attending a geriatric service, both inpatient and outpatient. The initial validity of the SAST was tested in all the sample and subsequently in the subgroups of depressed and non-depressed., Setting: An urban geriatric service in Israel., Patients: One hundred and fifty medical inpatients and outpatients, 95 females, aged 70 years and older., Measures: Psychiatric evaluation of modified Anxiety Disorders Interview Schedule for DSM-IV as criterion standard for anxiety and depression, SAST for anxiety and short Zung Interview-Assisted Depression Rating Scale for depression., Results: By the psychiatrist's evaluation, 40.7% suffered from anxiety. Mean SAST scores in the presence and absence of anxiety were significantly different (25.3 and 20.1; p<0.0005). The overall validity of the SAST was high (sensitivity 75.4%, specificity 78.7%). In the presence of depression, sensitivity was 83.3% and specificity 70.5%., Conclusion: The SAST was valid in detecting anxiety in the elderly, as well as in depressed patients. The study proved the usefulness of the SAST in a geriatric assessment programme., (Copyright 1999 John Wiley & Sons, Ltd.) more...

Background and Purpose: The Barthel Index for assessing activities of daily living (ADL) was developed particularly for young stroke patients, but it now has a wider application in the geriatric assessment profile. This study tests the validity of the Barthel Index by self-report in the old-old (> or = 75 years). If more than 10% of the studied population assessed themselves incorrectly (> or = 15-point discrepancy), the test may have limitations. We set out to try to quantify and explain this discrepancy., Methods: During a 3-month period, we tested 126 old-old patients, both geriatric medical inpatients and subjects from the community, in a cross-sectional study. Using the Barthel Index, their functional status was assessed by self-report and by observation of performance. A measure of the magnitude of discrepancy between the two methods (discrepancy score) was calculated as the difference between the self-report and performance total scores., Results: Comparing the self-report with actual ADL performance scores, the mean score for self-report was higher (90 vs 88). There was a low Kappa score in all areas of the scale (range 0.103-0.398). Twenty of the 126 patients (15.9%) scored 15 or more points in the discrepancy score. By running a multiple linear regression, we were able to explain only 21% of the variance in the discrepancy score (R2 = .21). Significant explanatory variables were the presence of cognitive impairment, source of patients from acute geriatric ward, and age (very old > or = 85 years)., Conclusion: For the purpose of this study, use of the Barthel Index by self-reporting was found to have its limitations in the old-old (> or = 75 years), particularly with regard to the very old (> or = 85 years) medical geriatric inpatients. Therefore, we suggest that the older people may have to be assessed by the rehabilitation services using a performance-based measure or a different self-report test for documenting their activities of daily living, bearing in mind that self-reported and performance-based measures capture physical abilities differently. more...