International Group for Reducing Inappropriate Medication Use & Polypharmacy (IGRIMUP): Position Statement and 10 Recommendations for Action
Globally, the number of drug prescriptions is increasing causing more adverse drug events, which is now a significant cause of mortality, morbidity, and disability that has reached epidemic proportions. The risk of adverse drug events is correlated to very old age, multiple co-morbidities, dementia, frailty, and limited life expectancy, with the major contributor being polypharmacy. Each characteristic alters the risk–benefit balance of medications, typically reducing anticipated benefits and amplifying risk. Current clinical guidelines are based on evidence proven in younger/healthier adult populations using a single disease model and their application to older adults with multimorbidity, in whom testing has not been conducted, yields a different risk–benefit prospect and makes inappropriate medication use and polypharmacy inevitable. Applying inappropriate clinical practice guidelines to older adults is antithetical to good healthcare, is likely to increase health inequity, and is associated with substantial negative clinical, economic, and social implications for health systems. The casualties are on the scale of a war or epidemic, yet are usually invisible in measures of healthcare quality and formal recommendations. Radical and rapid action is required to achieve a better quality of life for older populations and to remain true to the principles of medical professionalism and evidence-based medicine that place patients’ interests and autonomy at the fore. This first International Group for Reducing Inappropriate Medication Use & Polypharmacy position statement briefly details the causes, consequences, and extent of inappropriate medication use and polypharmacy. This article outlines current strategies to reduce inappropriate medication use, provides evidence for their effect, and then proposes recommendations for moving forward with 10 recommendations for action and 12 recommendations for research. We conclude that an urgent integrated effort to reduce inappropriate medication use and polypharmacy should be a leading global target of the highest priority. The cornerstone of this position statement from the International Group for Reducing Inappropriate Medication Use & Polypharmacy is the understanding that without evidence of definite relevant benefit, when it comes to prescribing, for many older patients ‘less is more’. This approach differs from most other current recommendations and guidance in medical care, as the focus is on what, when, and how to stop, rather than on when to start medications/interventions. Disrupting the framework that indiscriminately applies standard guidelines to older adults requires a new approach that better serves patients with multimorbidity. This transition requires a shift in medical education, research, and diagnostic frameworks, and re-examination of the measures used as quality indicators. In achieving this objective, we promote a return to some of the original concepts of evidence-based medicine: which considers scientific data (where it exists), clinical judgment, patient/family preference, and context. A shift is needed: from the current model that focuses on single conditions to one that simultaneously considers multiple conditions and patient priorities. This approach reframes the clinician’s role as a professional providing care, rather than a disease technician.
Polypharmacy is an urgent issue that requires a co-ordinated global effort to provide medical care systems that better serve patients with multimorbidity.
This transition requires a shift in medical education, research, and diagnostic frameworks, and reexamination of the measures used as quality indicators.
This position statement from the International Group for Reducing Inappropriate Medication Use & Polypharmacy briefly summarizes the current situation and provides a call to action for moving forward, proposing 10 recommendations for action and 12 recommendations for research.
1 Background and Objectives
Negative outcomes and hazards of inappropriate medication use and polypharmacy
Drug-specific adverse effects
Hip fractures 
Urinary incontinence 
Decrease in quality of life 
Reduced treatment adherence 
Many risk factors, such as elevated cholesterol, glucose, and blood pressure, lose much of their negative portent in older age [37, 38, 39] and some risk factors reverse to become predictors of better outcomes. Therefore, treating marker-defined conditions to target goals developed for younger people may be ineffective or, worse, damaging [26, 40, 41, 42].
While noting the importance and risks of under-prescribing in some settings, the focus of this position paper is over-prescribing. Medical errors, including ADEs are now leading causes of death, with many events yet to be recognized [24, 43, 44]. These casualties are on the scale of a war or epidemic; yet, this iatrogenic ‘epidemic’ is nearly invisible in guideline recommendations and quality measures. Just as with a war or epidemic, radical and rapid action is required to place the interests and autonomy of older populations at the fore, to achieve the best quality of life possible. This radical action is not against drugs or their prescription, nor against drug companies, but against the many forces that, in aggregate, can lead to damaging or unwanted overmedication of the elderly.
As the portion of older subpopulations with complex morbidity expands, many warn that we are ill equipped intellectually, economically, and professionally to face this global challenge, in general, and the IMUP epidemic, in particular [36, 45, 46, 47, 48, 49, 50]. We therefore believe that current global trends in healthcare require assertive and coordinated action against IMUP. We present the first position statement of IGRIMUP (International Group for Reducing Inappropriate Medication Use & Polypharmacy) on the international co-operative effort, and recommendations for actions needed to prevent and counter IMUP and its drivers globally.
2 Main Approaches for Reducing Inappropriate Medication Use and Polypharmacy and Their Clinical Efficacies
Many studies report on tools and strategies that have attempted to reduce IMUP. However, the global increase in the IMUP epidemic indicates that their efficacy is limited. There is inadequate information about the beneficial effect of these approaches on health outcomes, such as mortality, morbidity, function, cognition, patient well-being, healthcare services’ utilization, and cost. A 2010 cohort study of multiple medication discontinuation using a ‘consecutive patient’ sampling frame  is often referenced in the literature on polypharmacy as supporting the benefical health outcomes of using a general approach to drug discontinuation in community-dwelling patients. A further cohort study suggests long-term health benefits from drug discontinuation, compared with controls who declined deprescribing . These prospective studies achieved medication reductions and apparent benefits to health outcomes while measuring potential adverse effects, but were not randomized controlled trials. Studies in long-term residential care settings show that medications can be reduced but have yet to demonstrate beneficial outcomes, aside from a reduction in falls in those who have already had a fall [52, 53]. Other evidence of potential benefit is based on retrospective assessments of explicit lists of ‘drugs to avoid’, comparing these with admissions for ADEs to determine the sensitivity in predicting such events. One review concluded that evidence for health outcomes from pharmacist and physician based interventions to reduce polypharmacy is limited and conflicting, and recommended randomized controlled trials evaluating multidisciplinary interventions and clinical outcomes across different settings .
We present the main methods suggested to improve IMUP and briefly note where successful clinical outcomes are achieved by some of them. These methods are usually categorized as explicit criteria-based tools (some computer assisted) and implicit judgment-based tools.
2.1 Computer-Assisted Digital Tools
A variety of computer programs have been developed in many countries to ease application of the explicit criteria to detect IMUP. In countries with full medication information in an electronic medical record, these systems may provide alarms that alert clinicians to a variety of potential drug interactions as they turn on their computers and try to prescribe new drugs . However, a systematic review of 10 studies of computerized physician order entry with clinical decision support showed a mixed effect on the reduction of ADEs . There are suggestions that automatic messages, particularly where there are many alerts and more repeated alerts, lead to reminder fatigue and insensitivity . Others warn that relying too much on computers, where decision support is single-disease oriented, may be misleading or harmful to older patients [50, 58].
2.2 Explicit Tools
Explicit tools include lists of drugs to avoid or specific indicators of inappropriate medication use. A comparison of seven tools failed to show close similarities . The most widely used are the Beers criteria and the Screening Tool of Older Persons’ potentially inappropriate Prescriptions/Screening Tool to Alert to Right Treatment (STOPP/START) [60, 61, 62, 63, 64, 65, 66]. Both were updated in 2015. The criteria divide potentially inappropriate medications into: medications to avoid prescribing; to avoid in certain circumstances; and to be used with caution. Following the Beers initiative in 1991, other country-specific lists were established: in Germany, PRISCUS (Latin for ‘old and venerable’)  and the Fit for the Aged (FORTA); in France, a consensus panel list ; in Norway, the Norwegian General Practice (NORGEP) list ; in Canada, the Improving Prescribing in the Elderly Tool (IPET) ; and others [71, 72], including in Australia [73, 74] and Thailand . In the USA, Assessing Care of Vulnerable Elders (ACOVE) [76, 77], the Health Care Financing Administration expert consensus panel drug utilization review criteria , and Geriatric Risk Assessment MedGuide (GRAM)  have also been developed.
Other scales specifically identify the anticholinergic burden of medications. Among the multiple scales developed to assess anticholinergic burden, the Drug Burden Index seemed to best predict adverse health outcomes .
The Beers criteria has not yet been evaluated in a randomized controlled trial and, therefore, the extent of the lists effect in decreasing ADEs, morbidity, mortality, hospitalization and/or costs is uncertain. Analysis in a prospective cohort study shows modest sensitivity in predicting hospital admissions as a result of ADEs . Similarly, while applying STOPP/START criteria in older inpatients significantly improves the appropriateness of prescribing  and could potentially reduce avoidable ADEs that may cause urgent hospitalization [65, 81], the tool has not yet been prospectively tested in the primary care setting and its effect on long-term outcomes is yet to be described. These lists are limited by their single drug/disease-oriented approach, and require regular updating.
Applying the Geriatric Risk Assessment MedGuide (GRAM) tool in long-term care was proven efficacious in reducing the rate of delirium, hospitalizations, and mortality resulting from ADEs in newly admitted residents . However, other clinical outcomes were not assessed and it has not yet been prospectively tested in the primary care setting.
‘Fit for the Aged Criteria’ (FORTA) combines both negative and positive labeling based on individual indications. It ranks drugs into four groups depending on evidence for safety, efficacy, and overall age appropriateness: (A) indispensable with obvious benefit; (B) proven efficacy but limited effects or possible safety concerns; (C) questionable efficacy or safety; (D) avoid . A randomized trial to validate FORTA in hospitalized geriatric patients was associated with an improvement in medication quality and a reduction in ADEs . Its effect on overall patient outcomes is not yet tested beyond feasibility studies .
Other evidence of the potential benefit of explicit tools is based on retrospective assessments that use lists of ‘drugs to avoid’ and compare these with admissions for ADEs to determine the sensitivity in predicting (and therefore their potential to prevent) such events. These studies provide retrospective epidemiological data, but again, do not supply adequate unbiased proof that is required to understand the benefits of prospective application of these lists. There are other ongoing positive efforts to develop frameworks that (1) guide drug review; (2) reduce the harms of polypharmacy; and (3) advance single drug class deprescribing guidelines [50, 63, 85, 86, 87].
2.3 Implicit Approaches
To judge medication appropriateness, implicit approaches take into consideration research data, clinical circumstances, and patient/family preferences [88, 89]. Implicit approaches are less algorithmic and require much more time, knowledge, and judgment. This more complex approach is better suited to multimorbidity and to a shared decision-making model. However, the complexity of this approach creates problems for study design and relatively few studies have been carried out to assess efficacy and safety.
2.3.1 Comprehensive Geriatric Assessment
Comprehensive Geriatric Assessment (CGA) is a thorough evaluation of the older patient’s characteristics, cognition, function, medical conditions, and social situation, which is used to identify problems and appropriately manage them through individualized care plans . Though there is variation in the execution of the CGA, drug review is an integral component, with the minimal requirement of medication count and assessment, preferably at each visit and at least annually . If time limitation is a concern, the minimal requirement is to focus on those drugs with the highest risk or highest benefit . Multidisciplinary team approaches using the CGA in frail hospitalized older adults have been shown to significantly reduce serious ADEs and IMUP, when compared with usual care . Therefore, the CGA in itself may serve as an important tool for reducing IMUP [88, 89].
2.3.2 Medication Appropriateness Index
The Medication Appropriateness Index is a judgment-based process measure of prescribing appropriateness that assesses 10 elements of prescribing: indication, effectiveness, dose, correct directions, practical directions, drug–drug interactions, drug–disease interactions, duplication, duration, and cost. The Medication Appropriateness Index is the only implicit tool with validated inter-rater reliability . In heterogeneous smaller studies, the Index reduced ADEs compared with usual care , but the tool has not been extensively used in larger settings.
2.3.3 Prescribing Optimization Method
The Prescribing Optimization Method is based on six questions: Is undertreatment present and the addition of medication indicated? Does the patient adhere to his/her medication schedule? Which drugs can be withdrawn or which drugs are inappropriate for the patient? Which adverse effects are present? Which clinically relevant interactions are to be expected? Should the dose, dose frequency, or form of drug be adjusted? .
2.3.4 SMART (Specific, Measurable, Acceptable, Realistic, and Time-framed) Tool
The SMART (Specific, Measurable, Acceptable, Realistic and Time-framed) Tool is a method for reviewing complex geriatric drug regimens. It consists of 10 questions that draw attention to the appropriateness and safety of the drug plan. Therapeutic objectives are developed to improve quality of life, which the authors of the tool believe lead to a better understanding of geriatric clinical pharmacology, the special needs of older patients, and appropriate use of healthcare resources .
2.3.5 Patient-Focused Drug Surveillance
Patient-focused drug surveillance was developed in Swedish nursing homes . The intervention involved a physician-led, patient-focused approach that optimizes medication therapy and reduces polypharmacy by taking the patient’s health conditions into account. This approach advocates for a discussion of the benefits and risks of drug therapy with frail older people, accompanied by close monitoring and re-evaluation.
2.3.6 CRIME (CRIteria to Assess Appropriate Medication Use Among Elderly Complex Patients)
CRIME (CRIteria to assess appropriate Medication use among Elderly complex patients) offers 19 explicit recommendations on pharmacological treatments of only 5 common conditions (diabetes mellitus, hypertension, congestive heart failure, atrial fibrillation, and coronary heart disease). In line with vulnerability characteristics, CRIME takes into consideration complex aspects of aging (i.e. limited life expectancy, functional/cognitive impairments, and geriatric syndromes) that may negatively affect a drug’s benefit/risk ratio and therefore reduce its efficacy .
2.3.7 PATH (Palliative and Therapeutic Harmonization) Program
The PATH (Palliative and Therapeutic Harmonization) program was developed in Canada . One goal of this program is to achieve frailty-specific treatment guidelines to replace conventional clinical practice guidelines using an evidence review of common chronic conditions, such as hypertension, diabetes, and statin use for the prevention of cardiovascular disease [99, 100, 101]. The guidelines consider the clinical relevance of commonly accepted outcomes when there is frailty and suggest that even the outcome of reduced mortality may not be relevant with frailty owing to multiple competing risks for mortality. Based on an evidence review, the panel of experts conclude that rigid blood pressure, serum glucose, and cholesterol targets may be harmful in patients with severe frailty.
2.3.8 10-Step Discontinuation Guide
The 10-Step Discontinuation Guide was formulated by Scott et al. and synthesizes suggestions and guidance raised in other frameworks [28, 86, 102, 103]. The guide recommends a case-specific framework for each patient, with confirmed face validity showing that doctors who used the guide suggested more drugs for discontinuation for a hypothetical case .
2.3.9 Good Palliative Geriatric Practice Algorithm
3 Moving Forward
This phrase, from TS Elliott’s Choruses from The Rock, reminds us that the competent use of multiple medicines requires the application of wisdom, based on a critical understanding of the limitations and generalizability of research and of patient circumstances and preferences. The original definition of evidence-based medicine (EBM) stated: “Evidence-based medicine is the integration of best research evidence with clinical expertise and patient values” . The EBM diagram shows how these concepts are integrated using clinical judgment. More recently evidence-based medicine has been reconfigured as single disease guideline adherence, whereby evidence largely encourages clinicians to start medications, but the integration of clinical judgment and patient-centered care are lost. In this situation variation may be seen as poor practice.
"Where is the Wisdom We Have Lost in Knowledge?"
The cornerstone of this position statement is that without evidence of definite and relevant benefit, when prescribing for many older patients ‘less is more’. The approach differs from standard guidance as the focus here is on what, when, and how to stop, rather than on when to start medications/interventions. The scope can be extended beyond frailty to include many subpopulations with multimorbidity, disability, or limited life expectancy. It extends beyond the list-based approach of any explicit tool.
Our principal goal is to promote a return to the original concept of EBM and restore the physician’s role to one of a professional providing care, rather than a disease or algorithm technician. This role requires integration of patient preference and context, clinical judgment, and scientific data (where it exists), using a drug prescribing approach that can be customized to each older adult in a fashion aligned with patient-centered medicine ideals. A return to the more nuanced EBM framework, as described, will produce variation in care; but consistency in care is not synonymous with best care.
Most elderly patients have not had a formal review of their long-term medications and there is evidence that most patients, if asked, would like to reduce their medications and there is some evidence that patient-directed approaches to reducing single medicines can be effective [107, 108, 109]. The potential benefits of medication review to healthcare systems and patients are substantial and include reduced drug costs, ADEs, morbidity, and hospitalizations. Reducing IMUP should be a shared goal of the highest urgency that requires an integrated international effort.
There is a growing call for a medical system that better serves patients with multimorbidity [36, 58, 110, 111]. Barriers to addressing inappropriate medication use derive from the limitations of research; an inadequate framework for the clinical care of patients with polypharmacy, performance measures and incentives that focus on starting but not stopping medications; commercial influences; health system design; inadequate education about medication risks; and insufficient funding, all of which impact prescribers, pharmacists, and patients. Addressing these barriers will require changes to medical education, research practice, diagnostic frameworks, measures of quality, and policy [36, 58, 112, 113, 114].
3.1 10 Recommendations of the International Group for Reducing Inappropriate Medication Use & Polypharmacy
We make 10 recommendations for action and 12 recommendations for research.
Individual and System Approaches to Inappropriate Medication Use and Polypharmacy
Review the medications of all older adults with an eye to deprescribing, particularly those who are vulnerable to the adverse effects of medication.
Before initiating a potentially ‘appropriate’ medication, consider the validity of the evidence based on patient characteristics and preferences.
Consider each medication for potential withdrawal, extending beyond standardized lists.
Employ mixed implicit and explicit approaches to polypharmacy.
Address the underrepresentation of older patients in clinical trials.
Older adults are largely excluded from randomized controlled trials; and those that are included are non-representative of an older population with multimorbidity [118, 119, 120, 121, 122]. Randomized controlled trial findings may, thus, overestimate the benefit-risk balance in favor of increased prescribing in the group least able to tolerate it. This approach is antithetical to good healthcare and is likely to increase health inequity [111, 123, 124, 125]. Beyond recruitment strategies, the impact of underrepresentation/misrepresentation of older patients in trials might be at least partially addressed by incorporating stratified randomization and analysis, where possible. However, trial participation is disproportionately burdensome to patients with physical and cognitive limitations, who may also be unable to consent. Thus, approaches to enhance the enrollment of older adults must be complemented by explicit recognition that trial findings often overstate benefit over risk in older adults.
Acknowledge and address commercial influences on polypharmacy: trial results should not be implemented in older adults unless access to all available patient-level data is provided. Appropriate outcome measures should be required before licensing indications that include older populations.
Medical education needs a stronger focus on IMUP and its potential negative impact. Education about generalist approaches to multimorbidity should teach prioritization skills and aim to improve the clinician's understanding of the strengths and weaknesses of evidence and how best to apply standard models of care to vulnerable older adults with multimorbidity.
Medical training should review methods to stop treatments and provide equal attention to drug side effects and benefits.
When patients have multimorbidity, the single disease model (and its incentivization) should be spurned.
About half of people over 65 years of age have at least three coexisting chronic conditions and one in five has five or more [143, 144]. The single disease approach with adherence to clinical guidelines for each illness make polypharmacy and inappropriate medication use inevitable. Boyd et al.  demonstrates this clearly: a patient experiencing five chronic conditions will receive 19 doses of 12 different medications, taken at five times during the day, carrying the risk of ten attendant interactions and adverse events. Quality measures that assess care on a single disease basis might rate this compliance with guidelines as "good care" but what appears measurably better is meaningfully worse for the patient. When performance pay or professional re-certifications are linked to guideline adherence, physicians may feel coerced into persuading patients to follow treatments that do not serve their best interests.
Decisions in older complex patients should routinely consider expected survival and quality of life, giving the highest priority to patient/family preferences.
One physician should co-ordinate decisions within a shared framework (preferably in a generalist setting suited to consideration of multimorbidity and polypharmacy ideally with a pharmacist partner). Care for patients with multimorbidity should balance the burden of treatment, potential to benefit, potential harms, and personal priorities. The term ‘personalized medicine’ could be re-harnessed to describe these considerations.
12 polypharmacy research priorities
Clarify the risks and benefits of different approaches to reduce polypharmacy using patient-relevant outcomes such as all-cause mortality, morbidity, function cognitive status, and healthcare utilization and cost
Identify subgroups that will most benefit and those that may not
Determine the reversibility of the negative health effects of inappropriate medication use and polypharmacy
Clarify the effect of stopping treatments that have been used for many years
Consider the effects of different clinical care funding models on strategies to address polypharmacy
Define core important outcomes in treatment trials for drugs used in multimorbidity that assess risks and benefits based on patient and system-relevant domains
Research, synthesize, and review the relative benefits and risks of different treatment options for individual chronic diseases, including non-pharmaceutical treatments
Research, synthesize, and review the evidence on how and in whom to stop individual drugs
Develop tools to assess the capacity for, and burden of, treatment in multimorbidity
Develop tools that can aid the detection and management of drug adverse effects
Assess different approaches to incorporating patient priorities, including in cognitive impairment
Research optimal dosing in older adults
Reducing IMUP should be a high priority target. The morbidity and mortality attributed to the adverse effects of IMUP underscore this imperative. Studies suggest benefit from judicious deprescribing that may be equivalent to benefits achieved from medical treatments. Our goal is to promote a return to the original concept of EBM that integrates patient preference, context, clinical judgment, and scientific data (where it exists). There is a pressing need to reconceptualize the framework of medical care to better serve patients with multimorbidity, which will require shifts in medical education, quality measures, and policy. To reverse this epidemic of iatrogenic morbidity and mortality, an integrated global effort from health professionals, policy makers, and consumers is required.
The authors acknowledge Hannah Lamb, McMaster University, for her invaluable and elegant work in helping edit the manuscript, and the reviewers whose thoughtful comments improved the final version of the manuscript. Note on the International Group for Reducing Inappropriate Medication Use & Polypharmacy (IGRIMUP): all authors, along with many others worldwide, work with the shared goal of reducing the negative health and economic effects of inappropriate medication use. The idea of creating an international group to support this work via information sharing, research, and communication was born in a symposium at the 2009 International Association of Gerontology and Geriatrics Congress in Paris. The association was established at the 2013 International Association of Gerontology and Geriatrics Congress in Seoul. While the authors represent the IGRIMUP early members, IGRIMUP now includes more than 100 members from 26 countries and the efforts of this wider group are acknowledged.
Compliance with Ethical Standards
No funding was received for the preparation of this article.
Conflict of Interest
All authors have completed the Author Declaration Form and have no conflicts directly relevant to the content of this article.
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