The Variation of Statin Use Among Nursing Home Residents and Physicians: A Cross-Sectional Analysis

National Trends in Statin Use among the United States Nursing Home Population (2011-2016)

BACKGROUND

Little is known about trends in statin use in United States (US) nursing homes.

OBJECTIVES

The aim of this study was to describe national trends in statin use in nursing homes and evaluate the impact of the introduction of generic statins, safety warnings, and guideline recommendations on statin use.

METHODS

This study employed a repeated cross-sectional prevalence design to evaluate monthly statin use in long-stay US nursing home residents enrolled in Medicare fee-for-service using the Minimum Data Set 3.0 and Medicare Part D claims between April 2011 and December 2016. Stratified by age (65-75 years, ≥ 76 years), analyses estimated trends and level changes with 95% confidence intervals (CI) following statin-related events (the availability of generic statins, American Heart Association/American College of Cardiology guideline updates, and US FDA safety warnings) through segmented regression models corrected for autocorrelation.

RESULTS

Statin use increased from April 2011 to December 2016 (65-75 years: 38.6-43.3%; ≥ 76 years: 26.5% to 30.0%), as did high-intensity statin use (65-75 years: 4.8-9.5%; ≥ 76 years: 2.3-4.5%). The introduction of generic statins yielded little impact on the prevalence of statins in nursing home residents. Positive trend changes in high-intensity statin use occurred following national guideline updates in December 2011 (65-75 years: β = 0.16, 95% CI 0.09-0.22; ≥ 76 years: β = 0.09, 95% CI 0.06-0.12) and November 2013 (65-75 years: β = 0.11, 95% CI 0.09-0.13; ≥ 76 years: β = 0.04, 95% CI 0.03-0.05). There were negative trend changes for any statin use concurrent with FDA statin safety warnings in March 2012 among both age groups (65-75 years: β trend change = - 0.06, 95% CI - 0.10 to - 0.02; ≥ 76 years: β trend change = - 0.05, 95% CI - 0.08 to - 0.01). The publication of the results of a statin deprescribing trial yielded a decrease in any statin use among the ≥ 76 years age group (β level change = - 0.25, 95% CI - 0.48 to - 0.09; β trend change = - 0.03, 95% CI - 0.04 to - 0.01), with both age groups observing a positive trend change with high-intensity statins (65-75 years: β = 0.11, 95% CI 0.02-0.21; ≥ 76 years: β = 0.05, 95% CI 0.01-0.09).

CONCLUSION

Overall, statin use in US nursing homes increased from 2011 to 2016. Guidelines and statin-related events appeared to impact use in the nursing home setting. As such, statin guidelines and messaging should provide special consideration for nursing home populations, who may have more risk than benefit from statin pharmacotherapy.

Trends in Anticoagulant Use at Nursing Home Admission and Variation by Frailty and Chronic Kidney Disease Among Older Adults with Atrial Fibrillation

BACKGROUND

Atrial fibrillation (AF) is relatively common among nursing home residents, and decisions regarding anticoagulant therapy in this setting may be complicated by resident frailty and other factors.

OBJECTIVES

The aim of this study was to examine trends and correlates of oral anticoagulant use among newly admitted nursing home residents with AF following the approval of direct-acting oral anticoagulants (DOACs).

METHODS

We conducted a retrospective cohort study of all adults aged > 65 years with AF who were newly admitted to nursing homes in Ontario, Canada, between 2011 and 2018 (N = 36,466). Health administrative databases were linked with comprehensive clinical assessment data captured shortly after admission, to ascertain resident characteristics. Trends in prevalence of anticoagulant use (any, warfarin, DOAC) at admission were captured with prescription claims and examined by frailty and chronic kidney disease (CKD). Log-binomial regression models estimated crude percentage changes in use over time and modified Poisson regression models assessed factors associated with anticoagulant use and type.

RESULTS

The prevalence of anticoagulant use at admission increased from 41.1% in 2011/2012 to 58.0% in 2017/2018 (percentage increase = 41.1%, p < 0.001). Warfarin use declined (- 67.7%, p < 0.001), while DOAC use increased. Anticoagulant use was less likely among residents with a prior hospitalization for hemorrhagic stroke (adjusted risk ratio [aRR] 0.65, 95% confidence interval [CI] 0.60-0.70) or gastrointestinal bleed (aRR 0.80, 95% CI 0.78-0.83), liver disease (aRR 0.78, 95% CI 0.69-0.89), severe cognitive impairment (aRR 0.89, 95% CI 0.85-0.94), and non-steroidal anti-inflammatory drug (aRR 0.76, 95% CI 0.71-0.81) or antiplatelet (aRR 0.25, 95% CI 0.23-0.27) use, but more likely for those with a prior hospitalization for ischemic stroke or thromboembolism (aRR 1.30, 95% CI 1.27-1.33). CKD was associated with a reduced likelihood of DOAC versus warfarin use in both the early (aRR 0.62, 95% CI 0.54-0.71) and later years (aRR 0.79, 95% CI 0.76-0.83) of our study period. Frail residents were significantly less likely to receive an anticoagulant at admission, although this association was modest (aRR 0.95, 95% CI 0.92-0.98). Frailty was not associated with anticoagulant type.

CONCLUSIONS

While the proportion of residents with AF receiving oral anticoagulants at admission increased following the approval of DOACs, over 40% remained untreated. Among those treated, use of a DOAC increased, while warfarin use declined. The impact of these recent treatment patterns on the balance between benefit and harm among residents warrant further investigation.

Fall-Related Hospitalizations in Nursing Home Residents Co-Prescribed a Cholinesterase Inhibitor and Beta-Blocker

BACKGROUND/OBJECTIVES

To examine the association between hospitalization for a fall-related injury and the co-prescription of a cholinesterase inhibitor (ChEI) among persons with dementia receiving a beta-blocker, and whether this potential drug-drug interaction is modified by frailty.

DESIGN

Nested case-control study using population-based administrative databases.

SETTING

All nursing homes in Ontario, Canada.

PARTICIPANTS

Persons with dementia aged 66 and older who received at least one beta-blocker between April 2013 and March 2018 following nursing home admission (n = 19,060).

MEASUREMENTS

Cases were persons with dementia with a hospitalization (emergency department visit or acute care admission) for a fall-related injury with concurrent beta-blocker use. Each case (n = 3,038) was matched 1:1 to a control by age (±1 year), sex, cohort entry year, frailty, and history of fall-related injuries. The association between fall-related injury and exposure to a ChEI in the 90 days prior was examined using multivariable conditional logistic regression. Secondary exposures included ChEI type, daily dose, incident versus prevalent use, and use in the prior 30 days. Subgroup analyses considered frailty, age group, sex, and history of hospitalization for fall-related injuries.

RESULTS

Exposure to a ChEI in the prior 90 days occurred among 947 (31.2%) cases and 940 (30.9%) controls. In multivariable models, no association was found between hospitalization for a fall-related injury and prior exposure to a ChEI in persons with dementia dispensed beta-blockers (adjusted odds ratio = .96, 95% confidence interval = .85-1.08). Findings were consistent across secondary exposures and subgroup analyses.

CONCLUSION

Among nursing home residents with dementia receiving beta-blockers, co-prescription of a ChEI was not associated with an increased risk of hospitalization for a fall-related injury. However, we did not assess for its association with falls not leading to hospitalization. This finding could inform clinical guidelines and shared decision making between persons with dementia, caregivers, and clinicians concerning ChEI initiation and/or discontinuation.

Statin Discontinuation and Life-Limiting Illness in Non-Skilled Stay Nursing Homes at Admission

OBJECTIVES

To estimate 30-day statin discontinuation among newly admitted nursing home residents overall and within categories of life-limiting illness.

DESIGN

Retrospective cohort using Minimum Data Set 3.0 nursing home admission assessments from 2015 to 2016 merged to Medicare administrative data files.

SETTING

U.S. Medicare- and Medicaid-certified nursing home facilities (n = 13,092).

PARTICIPANTS

Medicare fee-for-service beneficiaries, aged 65 years and older, newly admitted to nursing homes for non-skilled nursing facility stays on statin pharmacotherapy at the time of admission (n = 73,247).

MEASUREMENTS

Residents were categorized using evidence-based criteria to identify progressive, terminal conditions or limited prognoses (<6 months). Discontinuation was defined as the absence of a new Medicare Part D claim for statin pharmacotherapy in the 30 days following nursing home admission.

RESULTS

Overall, 19.9% discontinued statins within 30 days of nursing home admission, with rates that varied by life-limiting illness classification (no life-limiting illness: 20.5%; serious illness: 18.6%; receipt of palliative care consult: 34.5%; clinician designated as end-of-life: 45.0%). Relative to those with no life-limiting illness, risk of 30-day statin discontinuation increased with life-limiting illness severity (serious illness: adjusted risk ratio (aRR) = 1.06; 95% confidence interval (CI) = 1.02-1.10; palliative care index diagnosis: aRR = 1.15; 95% CI = 1.10-1.21; palliative care consultation: aRR = 1.58; 95% CI = 1.43-1.74; clinician designated as end of life: aRR = 1.59; 95% CI = 1.42-1.79). Nevertheless, most remained on statins after entering the nursing home regardless of life-limiting illness status.

CONCLUSION

Statin use continues in a large proportion of Medicare beneficiaries after admission to a nursing home. Additional deprescribing research, which identifies how to engage nursing home residents and healthcare providers in a process to safely and effectively discontinue medications with questionable benefits, is warranted.

Discontinuation of Statins in Veterans Admitted to Nursing Homes near the End of Life

BACKGROUND/OBJECTIVES

Geriatric guidelines recommend against statin use in older adults with limited life expectancy (LLE) or advanced dementia (AD). This study examined resident and facility factors predicting statin discontinuation after nursing home (NH) admission in veterans with LLE/AD taking statins for secondary prevention.

DESIGN

Retrospective cohort study of Veterans Affairs (VA) bar code medication administration records, Minimum Data Set (MDS) assessments, and utilization records linked to Medicare claims.

SETTING

VA NHs, known as community living centers (CLCs).

PARTICIPANTS

Veterans aged 65 and older with coronary artery disease, stroke, or diabetes mellitus, type II, admitted in fiscal years 2009 to 2015, who met criteria for LLE/AD on their admission MDS and received statins in the week after admission (n = 13,110).

MEASUREMENTS

Residents were followed until statin discontinuation (ie, gap in statin use ≥14 days), death, or censoring due to discharge, day 91 of the stay, or end of the study period. Competing risk models assessed cumulative incidence and predictors of discontinuation, stratified by whether the resident had their end-of-life (EOL) status designated or used hospice at admission.

RESULTS

Overall cumulative incidence of statin discontinuation was 31% (95% confidence interval [CI] = 30%-32%) by day 91, and it was markedly higher in those with (52%; 95% CI = 50%-55%) vs without (25%; 95% CI = 24%-26%) EOL designation/hospice. In patients with EOL designation/hospice (n = 2,374), obesity, congestive heart failure, and admission from nonhospital settings predicted decreased likelihood of discontinuation; AD, dependency in activities of daily living, greater number of medications, and geographic region predicted increased likelihood of discontinuation. In patients without EOL designation/hospice (n = 10,736), older age and several specific markers of poor prognosis predicted greater discontinuation, whereas obesity/overweight predicted decreased discontinuation.

CONCLUSION

Most veterans with LLE/AD taking statins for secondary prevention do not discontinue statins following CLC admission. Designating residents as EOL status, hospice use, and individual clinical factors indicating poor prognosis may prompt deprescribing.

Statin use and fall-related hospitalizations among residents of long-term care facilities: A case-control study

BACKGROUND

Statins are associated with muscle-related adverse events, but few studies have investigated the association with fall-related hospitalizations among residents of long-term care facilities (LTCFs).

OBJECTIVE

The objective of the study is to investigate whether statin use is associated with fall-related hospitalizations from LTCFs.

METHODS

A case-control study was conducted among residents aged ≥65 years admitted to hospital from 2013 to 2015. Cases (n = 332) were residents admitted for falls and fall-related injuries. Controls (n = 332) were selected from patients admitted for reasons other than cardiovascular and diabetes. Cases and controls were matched 1:1 by age (±2 years), index date of admission (±6 months), and sex. Adjusted odds ratios (aORs) and 95% confidence intervals (CIs) were estimated using conditional logistic regression, after considering for history of falls, hypertension, dementia, functional comorbidity index, polypharmacy (≥9 regular preadmission medications), and fall-risk medications. Subanalyses were performed for individual statins, dementia, and statin intensity.

RESULTS

Overall, 43.1% of cases and 27.1% of controls used statins. Statins were associated with fall-related hospitalizations (aOR = 2.24, 95% CI 1.56-3.23), in particular simvastatin (aOR = 2.26, 95% CI 1.22-4.20) and atorvastatin (aOR = 2.08, 95% CI 1.33-3.24). Statins were associated with fall-related hospitalizations in residents with (aOR = 2.34, 95% CI 1.33-4.11) and without dementia (aOR = 2.30, 95% CI 1.46-3.63). There was no association between statin intensity and fall-related hospitalizations (aOR = 0.78, 95% CI 0.43-1.40).

CONCLUSION

This study suggests a possible association between statin use and fall-related hospitalizations among residents living in LTCFs. However, there was minimal evidence for a relationship between statin intensity and fall-related hospitalizations. Further research is required to substantiate these hypothesis-generating findings.

Prevalent Statin Use in Long-Stay Nursing Home Residents with Life-Limiting Illness

OBJECTIVES

To evaluate the prevalence and factors associated with statin pharmacotherapy in long-stay nursing home residents with life-limiting illness.

DESIGN

Cross-sectional.

SETTING

US Medicare- and Medicaid-certified nursing home facilities.

PARTICIPANTS

Long-stay nursing home resident Medicare fee-for-service beneficiaries aged 65 years or older with life-limiting illness (n = 424 212).

MEASUREMENTS

Prevalent statin use was estimated as any low-moderate intensity (daily dose low-density lipoprotein-cholesterol [LDL-C] reduction <30%-50%) and high-intensity (daily dose LDL-C reduction >50%) use via Medicare Part D claims for a prescription supply on September 30, 2016, with a 90-day look-back period. Life-limiting illness was operationally defined to capture those near the end of life using evidence-based criteria to identify progressive terminal conditions or limited prognoses (<6 mo). Poisson models provided estimates of adjusted prevalence ratios and 95% confidence intervals for resident factors.

RESULTS

A total of 34% of residents with life-limiting illness were prescribed statins (65-75 y = 44.0%, high intensity = 11.1%; >75 y = 31.1%, high intensity = 5.4%). Prevalence of statins varied by life-limiting illness definition. Of those with a prognosis of less than 6 months, 23% of the 65 to 75 and 12% of the older than 75 age groups were on statins. Factors positively associated with statin use included minority race or ethnicity, use of more than five concurrent medications, and atherosclerotic cardiovascular disease or risk factors.

CONCLUSION

Despite having a life-limiting illness, more than one-third of clinically compromised long-stay nursing home residents remain on statins. Although recent national guidelines have expanded indications for statins, the benefit of continued therapy in an advanced age population near the end of life is questionable. Efforts to deprescribe statins in the nursing home setting may be warranted. J Am Geriatr Soc 68:708-716, 2020.

Utilization of drugs for the management of cardiovascular diseases at intermediate care facilities for older adults in Japan

OBJECTIVES

No established approaches exist for the pharmacological management of cardiovascular diseases (CVDs) in residents of long-term care facilities (LTCFs). This study aimed to evaluate the use of drugs for CVD prevention and treatment (CVD-related drugs) in a major type of LTCF in Japan.

METHODS

This study included 1318 randomly selected residents at 349 intermediate care facilities for older adults (called Roken). Prescriptions were investigated at admission and two months after admission according to therapeutic categories. Logistic regression was used to identify residents' characteristics that were associated with prescriptions of CVD-related drugs.

RESULTS

Prescriptions of all types of drugs and CVD-related drugs decreased in 36 % and 16 % of residents, respectively. Half of the residents received antihypertensives, a quarter received antiplatelets and diuretics, whereas one-tenth received antidiabetics, oral anticoagulants, and lipid-modifying drugs. The prevalence of most of individual drug categories were similar among residents with different physical or cognitive function, except for fewer antihypertensive and lipid-modifying drugs in those with severe cognitive disability. Adjusted analyses for prescriptions at two months after admission revealed that bedridden residents were more likely to be prescribed diuretics but less likely to be prescribed antihypertensives, antiplatelets, or lipid-modifying drugs. Residents with severe cognitive disability were less likely to be prescribed antihypertensives or lipid-modifying drugs. A known history of cardiovascular events was associated with greater use of CVD-related drugs.

CONCLUSION

CVD-related drugs were commonly prescribed for Roken residents, including those with low physical and cognitive functions. Deprescribing may contribute to the optimization of pharmacotherapy in LTCF residents.

Association between Physician Intensity of Antibiotic Prescribing and the Prescription of Benzodiazepines, Opioids and Proton-Pump Inhibitors to Nursing Home Residents: a Population-Based Observational Study

BACKGROUND

Prescribing patterns for episodic medications, such as antibiotics, might make useful surrogate measures of a physician's overall prescribing practice because use is common, and variation exists across prescribers. However, the extent to which a physician's current antibiotic prescribing practices are associated with the rate of prescription of other potentially harmful medications remains unknown.

OBJECTIVE

To examine the association between a physician's rate of antibiotic prescribing and their prescribing rate of benzodiazepines, opioids and proton-pump inhibitors in older adults.

DESIGN

Population-based cohort study in nursing homes in Ontario, Canada, which provides comprehensive clinical, behavioural and functional information on all patients.

PARTICIPANTS

1926 physicians who provided care among 128,979 physician-patient pairs in 2015.

MAIN MEASURES

Likelihood of prescribing a benzodiazepine, opioid or proton-pump inhibitor between low-, average- and high-intensity antibiotic prescribers, adjusted for patient characteristics.

KEY RESULTS

Compared with average-intensity antibiotic prescribers, high-intensity prescribers had an increased likelihood of prescribing a benzodiazepine (odds ratio 1.21 [95% CI, 1.11-1.32]), an opioid (odds ratio 1.28 [95% CI, 1.17-1.39]) or a proton-pump inhibitor (odds ratio 1.38 [95% CI, 1.27-1.51]]. High-intensity antibiotic prescribers were more likely to be high prescribers of all three medications (odds ratio 6.24 [95% CI, 2.90-13.39]) and also more likely to initiate all three medications, compared with average-intensity prescribers.

CONCLUSIONS

The intensity of a physician's episodic antibiotic prescribing was significantly associated with the likelihood of new and continued prescribing of opioids, benzodiazepines and proton-pump inhibitors in nursing homes. Patterns of episodic prescribing may be a useful mechanism to target physician-level interventions to optimize general prescribing behaviors, instead of prescribing behaviors for single medications.

One-year survival and admission to hospital for cardiovascular events among older residents of long-term care facilities who were prescribed intensive- and moderate-dose statins

BACKGROUND

Guidance from randomized clinical trials about the ongoing benefits of statin therapies in residents of long-term care facilities is lacking. We sought to examine the effect of statin dose on 1-year survival and admission to hospital for cardiovascular events in this setting.

METHODS

We conducted a retrospective cohort study using population-based administrative data from Ontario, Canada. We identified 21 808 residents in long-term care facilities who were 76 years of age and older and were prevalent statin users on the date of a full clinical assessment between April 2013 and March 2014, and categorized residents as intensive- or moderate-dose users. Treatment groups were matched on age, sex, admission to hospital for atherosclerotic cardiovascular disease, resident frailty and propensity score. Differences in 1-year survival and admission to hospital for cardiovascular events were measured using Cox proportional and subdistribution hazard models, respectively.

RESULTS

Using propensity-score matching, we included 4577 well-balanced pairs of residents who were taking intensive- and moderate-dose statins. After 1 year, there were 1210 (26.4%) deaths and 524 (11.5%) admissions to hospital for cardiovascular events among residents using moderate-dose statins compared with 1173 (25.6%) deaths and 522 (11.4%) admissions to hospital for cardiovascular events among those taking intensive-dose statins. We found no significant association between prevalent use of intensive-dose statins and 1-year survival (hazard ratio [HR] 0.97, 95% confidence interval [CI] 0.90 to 1.05) or 1-year admission to hospital for cardiovascular events (HR 0.99, 95% CI 0.88 to 1.12) compared with use of moderate-dose statins.

INTERPRETATION

The rates of mortality and admission to hospital for cardiovascular events at 1 year were similar between residents in long-term care taking intensive-dose statins compared with those taking moderate-dose statins. This lack of benefit should be considered when prescribing statins to vulnerable residents of long-term care facilities who are at potentially increased risk of statin-related adverse events.

Change in Prescribing for Secondary Prevention of Stroke and Coronary Heart Disease in Finnish Nursing Homes and Assisted Living Facilities

BACKGROUND

One quarter of residents in long-term care facilities (LTCFs) have a diagnosis of CHD or stroke and over half use at least one preventative cardiovascular medication. There have been no studies that have investigated the longitudinal change in secondary preventative cardiovascular medication use in residents in LTCFs over time.

OBJECTIVE

The aim of this study was to investigate the change in cardiovascular medication use among residents with coronary heart disease (CHD) and prior stroke in nursing homes (NHs) and assisted living facilities (ALFs) in Finland over time, and whether this change differs according to dementia status.

METHODS

Three comparable cross-sectional audits of cardiovascular medication use among residents aged 65 years and over with CHD or prior stroke in NHs in 2003 and 2011 and ALFs in 2007 and 2011 were compared. Logistic regression analyses adjusted for gender, age, mobility, cancer and length of stay were performed to examine the effect of study year, dementia and their interaction on medication use.

RESULTS

Cardiovascular medication use among residents with CHD (NHs: 89% vs 70%; ALFs: 89% vs 84%) and antithrombotic medication use among residents with stroke (NHs: 72% vs 63%; ALFs: 78% vs 69%) declined between 2003 and 2011 in NHs and 2007 and 2011 in ALFs. Decline in the use of diuretics, nitrates and digoxin were found in both groups and settings. Cardiovascular medication use among residents with CHD and dementia declined in NHs (88% [95% CI 85-91] in 2003 vs 70% [95% CI 64-75] in 2011) whereas there was no change among people without dementia. There was no change in cardiovascular medication use among residents with CHD in ALFs with or without dementia over time. Antithrombotic use was lower in residents with dementia compared with residents without dementia in NHs (p < 0.001) and ALFs (p = 0.026); however, the interaction between dementia diagnosis and time was non-significant.

CONCLUSIONS

The decline in cardiovascular medication use in residents with CHD and dementia suggests Finnish physicians are adopting a more conservative approach to the management of cardiovascular disease in the NH population.

Time trends in opioid prescribing among Ontario long-term care residents: a repeated cross-sectional study

BACKGROUND

Opioids are an important pain therapy, but their use may be associated with adverse events in frail and cognitively impaired long-term care residents. The objective of this study was to investigate trends in opioid prescribing among Ontario long-term care residents over time, given the paucity of data for this setting.

METHODS

We used linked clinical and health administrative databases to conduct a population-based, repeated cross-sectional study of opioid use among Ontario long-term care residents between Apr. 1, 2009, and Mar. 31, 2017. We identified prevalent opioid use by drug type, dosage and coprescription with benzodiazepines, and within certain vulnerable subgroups. We used log-binomial regression to quantify the percent change between 2009/10 and 2016/17.

RESULTS

Among an average of 76 147 long-term care residents per year, the prevalence of opioid use increased from 15.8% in 2009/10 to 19.6% in 2016/17 (p < 0.001). Over the study period, the use of hydromorphone increased by 233.2%, whereas the use of all other opioid agents decreased. The use of high-dose opioids (> 90 mg of morphine equivalents) and the coprescription of opioids with benzodiazepines decreased significantly, by 17.7% (p < 0.001) and 23.8% (p < 0.001), respectively. Increases in opioid prevalence were more notable among frail residents (37.6% v. 18.8% among nonfrail residents, p < 0.001) and those with dementia (38.6% v. 21.6% among those without dementia, p < 0.001).

INTERPRETATION

Within Ontario long-term care, trends suggest a shift toward increased use of hydromorphone but reduced prevalence of use of other opioid agents and potentially inappropriate opioid prescribing. Further investigation is needed on the impact of these trends on resident outcomes.

Use of statins in the elderly according to age and indication-a cross-sectional population-based register study

PURPOSE

To investigate statin use in the elderly by age (≥ 80 vs. 65-79 years) in relation to established indications.

METHODS

A population-based cohort, including data from four registers, encompassing inhabitants in Region Västra Götaland, Sweden, was used. Statin users were defined as those filling statin prescriptions ≥ 75% of the year 2010. Primary care and hospital diagnoses in 2005-2010 regarding ischemic heart disease, stroke, transient ischemic attacks, and diabetes were considered established indications.

RESULTS

A total of 278,205 individuals were analyzed. In individuals aged ≥ 80 and 65-79 years (n = 81,885 and n = 196,320, respectively), 17% (95% confidence interval 17%; 18%) and 23% (23%; 23%) respectively, were statin users. Among the statin users, 74% (73%; 74%) of those aged ≥ 80 and 60% (59%; 60%) of those aged 65-79 years had ≥ 1 established indication. Conversely, of those with ≥ 1 established indication, 30% (30%; 31%) and 53% (52%; 53%) were on statins in the respective age groups. Logistic regression revealed that age, nursing home residence, and multi-dose drug dispensing were the most prominent negative predictors for statin use; adjusted odds ratios (95% confidence interval): 0.45 (0.44; 0.46), 0.39 (0.36; 0.42), and 0.47 (0.44; 0.49), respectively.

CONCLUSIONS

In the oldest old (≥ 80 years), statin users were fewer and had more often an established indication, suggesting that physicians extrapolate scientific evidence for beneficial effects in younger age groups to the oldest, but require a more solid ground for treatment. As the oldest old, nursing home residents, and those with multi-dose drug-dispensing were statin users to a lesser extent, physicians may often refrain from treatment in those with lower life expectancy, either due to age or to severely reduced health status. In both age groups, our results however also indicate some over- as well as undertreatment.

How Common is Statin Use in the Oldest Old?

There is a lack of evidence surrounding the efficacy of statins in the oldest old (≥ 80 years of age). As such, there is controversy surrounding use of statins in this population. We sought to evaluate the prevalence of statin use in the oldest old worldwide to understand the scope of this issue. We searched PubMed and grey literature over the last 5 years. Studies had to report the prevalence of statin use in adults ≥ 80 years of age. The first author performed screening and extracted data. Our search produced 1870 hits; 14 articles were considered eligible. We found three studies of nursing home residents, eight studies of community-dwelling patients and three studies in the combined population (i.e., both community-dwelling patients and nursing home residents). The prevalence of statin use ranged from 17 to 39% in nursing home residents, 12 to 59% for community-dwelling patients and 18 to 45% in combined populations. Beyond age 80 years, the prevalence of statin use appeared to decrease with advancing age. Statin use was more common as secondary prevention compared with primary prevention. The prevalence of statin use in the oldest old has increased over recent decades. The increase in prevalence appears to be more pronounced in the oldest old compared with younger old, as reported by two studies. Statins are widely used in the oldest old despite the lack of evidence in this population. Given how common statin use is in the oldest old, clinical evidence surrounding their efficacy in this group is urgently needed to guide appropriate use and shared decision-making.

Cardiovascular disease in nonagenarians: Prevalence and utilization of preventive therapies

Aims

Nonagenarians are a fast growing segment of industrialized countries' populations. Despite a greater risk of cardiovascular disease, there are limited data about their use of preventive therapies and factors guiding decisions regarding their prescription. The aim of this study was to evaluate the prevalence of cardiovascular diseases and the patterns of use of cardiovascular treatments in subjects ≥90 years old.

Methods

Population-based, cross-sectional study, in all nonagenarians residing in the Community of Madrid (Spain). Data were obtained from their electronic clinical records in primary care.

Results

Data were available from 59,423 subjects (mean age 93.3 years, 74.2% female, 13.5% with dementia). Prevalence of cardiovascular disease was 24.1% (10.9% with coronary artery disease (CAD), 13.1% with cerebrovascular disease (CVD) and 2.7% with peripheral artery disease(PAD)). In primary prevention, the use of statins and antiplatelet agents was 21.9% and 26.7%, respectively. Of subjects with vascular disease 27.7% were receiving a combined preventive strategy (use of antithrombotics, plus statins, plus blood pressure below 140/90 mmHg). Factors favourably associated with a combined preventive strategy were: female sex (odds ratio (OR) 1.29; 95% confidence interval (CI): 1.11–1.49), being independent versus totally dependent (OR 1.94; 95% CI: 1.43–2.65), diabetes (OR 1.42; 95% CI: 1.20–1.68), and negatively, age (OR 0.87; 95% CI: 0.85–0.90), CVD versus CAD (OR 0.41; 95% CI: 0.35–0.47), PAD versus CAD (OR 0.23; 95% CI: 0.18–0.30), dementia (OR 0.61; 95% CI: 0.49–0.76) and nursing home residency (OR 0.73; 95% CI: 0.57–0.93).

Conclusion

Nonagenarians have a great burden of cardiovascular diseases and receive a great number of preventive therapies, even in primary prevention, despite their unproven efficacy at these ages.

Selective prescribing of statins and the risk of mortality, hospitalizations, and falls in aged care services

BACKGROUND

Compared to randomized controlled trials, nonexperimental studies often report larger survival benefits but higher rates of adverse events for statin use vs nonuse.

OBJECTIVE

We compared characteristics of statin users and nonusers living in aged care services and evaluated the relationships between statin use and all-cause mortality, all-cause and fall-related hospitalizations, and number of falls during a 12-month follow-up.

METHODS

A prospective cohort study of 383 residents aged ≥65 years was conducted in six Australian aged care services. Data were obtained from electronic medical records and medication charts and through a series of validated assessments.

RESULTS

The greatest differences between statin users and nonusers were observed in activities of daily living, frailty, and medication use (absolute standardized difference >0.40), with users being less dependent and less frail but using a higher number of medications. Statin use was associated with a decreased risk of all-cause mortality (adjusted hazard ratio [HR] 0.58, 95% confidence interval [CI] 0.37-0.93) and hospitalizations (HR 0.67, 95% CI 0.46-0.98). After exclusion of residents unable to sit or stand, statin use was associated with a nonsignificant increase in the risk of fall-related hospitalizations (HR 1.47, 95% CI 0.80-2.68) but with a lower incidence of falls (incidence rate ratio 0.67, 95% CI 0.47-0.96).

CONCLUSIONS

The observed associations between statin use and the outcomes may be largely explained by selective prescribing and deprescribing of statins and variation in likelihood of hospitalization based on consideration of each resident's clinical and frailty status. Randomized deprescribing trials are needed to guide statin prescribing in this setting.