Developing Quality of Care Indicators for the Vulnerable Elderly: The ACOVE Project
Jan 1, 2004
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The Assessing Care of Vulnerable Elders (ACOVE) indicators were the first set of health care quality indicators developed specifically for the elderly. Vulnerable elders receive on average only half of recommended care; for conditions that affect primarily the elderly, they receive appropriate care—care indicated by ACOVE—less than one-third of the time. According to ACOVE, patients who received better care are more likely to be alive three years later than those who received poorer care. Interventions based on the ACOVE indicators improved the care physicians provided to vulnerable elders for several selected conditions. In 2007, the ACOVE indicators were updated to include more health conditions and to give greater consideration to the appropriateness of care for patients with advanced dementia or an otherwise poor prognosis.
In 2000, RAND Health researchers released the first set of quality measures specifically developed for the vulnerable elderly—those most likely to die or become severely disabled in the next two years (see Who Are the Vulnerable Elderly?). The Assessing Care of Vulnerable Elders (ACOVE) indicators reflect the most comprehensive examination ever conducted of the quality of medical care provided to vulnerable older Americans (see What Does a Quality Indicator Look Like?).
As summarized in an earlier Research Highlight (The Quality of Health Care Received by Older Adults), the ACOVE measures, which reflect a combination of clinical evidence and expert opinion, were used to assess the care being provided to elderly people by primary care physicians in several large health care systems nationwide.
In phase 2 of the ACOVE study (ACOVE-2), the researchers used the results of these assessments, and the measures themselves, to evaluate several practical interventions in primary care practices aimed at improving performance of some of the most underperformed health care procedures, as identified in ACOVE-1.
This Research Highlight summarizes results of ACOVE-2 and describes a recent revision of the quality measures, known as ACOVE-3.
The researchers developed and tested a simple questionnaire, the Vulnerable Elders Survey (shown in the table), to identify vulnerable elders. Points are assigned for characteristics such as older age and limitations in daily functioning (two points are assigned for extensive limitations). A score of three or more points defines a vulnerable elder. This questionnaire has been used extensively to identify individuals for targeted interventions and to examine the risk of vulnerability for particular conditions.
|Self-rated health: fair or poor||+1|
|Limitations in physical functioning (carrying 10 pounds, grasping, reaching, stooping, walking one-quarter mile)||+1 to +2|
|Any functional disability (bathing, shopping, walking, money management, light housekeeping)||+4|
|Age 85 and over||+3|
Working with a committee of nationally recognized experts in geriatric care, the ACOVE-1 research team identified 22 conditions—including diseases, syndromes, physiological impairments, and clinical situations—that account for the majority of health care received by older adults. Based on reviews of the medical literature and expert opinion, the RAND team proposed a set of quality-of-care indicators for each condition—recommendations that set a minimum standard for acceptable care. The indicators were evaluated by expert panels and the American College of Physicians Task Force on Aging. In all, 236 quality indicators were accepted, covering four stages of the health care process: prevention, diagnosis, treatment, and follow-up.
Some of ACOVE's 22 conditions affect all adults; some affect primarily the elderly. When the researchers applied the indicators to assess the quality of care received by vulnerable elderly who were living on their own, that is, not in nursing facilities, they found that, on average, this group receives about half of the care that is recommended for their conditions. For conditions that affect primarily the elderly, such as impaired mobility (difficulty getting around, which can lead to falls), urinary incontinence, and impaired cognitive function, elders received less than one-third of recommended care.
For example, in two Southern California medical groups, 35 percent of vulnerable elders complained of urinary incontinence (a condition that becomes more prevalent with age). But only 13 percent of the patients with symptoms of incontinence were offered treatment.
Chronic pain management was also found to be inadequate for vulnerable elders in the two medical groups. Screening for chronic pain, thorough clinical evaluation of pain complaints, follow-up of patients with a history of osteoarthritis (OA), and counseling about potential toxicities of nonsteroidal anti-inflammatory (NSAID) therapy were all performed less frequently than recommended (see figure).
Quality of care matters. The ACOVE researchers also found that patients who receive better care are more likely to be alive three years later than those who received poorer care.
One might expect that patients with multiple chronic conditions would be the least likely to receive adequate care. But in fact, such patients actually receive care that is better than average. Quality of care was not influenced by age, gender, or degree of "vulnerability."
ACOVE-1 showed that vulnerable elderly receive less than one-third of recommended care for conditions associated with aging. The aim of ACOVE-2 was to design simple interventions to improve the care elders receive from their primary care doctors for three conditions associated with aging (falls and mobility impairment, urinary incontinence, and cognitive impairment) and to test the effect of these interventions on care practices in a controlled trial (that is, to compare doctors' offices that implemented the interventions with those that did not). The interventions (which were tailored to each condition) had four components:
The interventions were carried out in two large medical groups in Southern California. Office staff were trained to screen patients for the conditions and to implement recommended treatments if the patients had these conditions.
Elderly patients whose doctors' offices implemented the interventions received significantly better care for mobility impairment and incontinence (but not cognitive impairment) than patients whose doctors' offices did not participate. Interestingly, the ACOVE interventions did not stimulate global improvement in the care that patients received—that is, there was no improvement in care for conditions unrelated to the target conditions. However, increased focus on a few conditions did not result in less attention being paid to other conditions.
To reflect progress in diagnosis and treatment and to create a more comprehensive set of quality measures, the ACOVE team produced a new set of indicators.
A consideration in updating the existing indicators and developing new indicators—especially those pertaining to care processes, such as cancer treatment, that are especially burdensome to the patient—was to determine how to apply the indicators to patients with advanced dementia or an otherwise poor prognosis so as to minimize unnecessary discomfort or potentially futile effort. A panel of clinical experts considered the burden of care involved in each indicator and weighed that burden against the expected outcome of the care—improvement in a patient's condition (e.g., a surgical procedure), prevention of some adverse event (e.g., immunization against the flu), or simply maintaining continuity of care. This process resulted in the exclusion of more than one-third of the indicators for those with advanced dementia and a similar proportion for those with a poor prognosis.
Like the ACOVE-1 indicators, the ACOVE-3 indicators are intended to evaluate whether the care being delivered at the level of the health care system meets minimal standards of quality. What this means is that the indicators are not practice guidelines, which define optimal care; care that does not meet the standards set by the indicators is poor quality care. What it also means is that the indicators are appropriate to assess a health plan or medical group, but not an individual physician, because no one physician is responsible for all the health care a typical elderly patient receives. And like their predecessors, the ACOVE-3 indicators will surely be used to guide the design of future interventions aimed at improving the quality of care that vulnerable elders receive.
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