Ambulatory Care Sensitive Hospitalizations Research Articles

Capitalizing on Prescribing Pattern Variation to Compare Medications for Type 2 Diabetes

BackgroundClinical trials often compare hypoglycemic medications on the basis of glycemic control but do not examine long-term outcomes (e.g., mortality). This study demonstrates an alternative approach to lengthening clinical trials to assess these long-term outcomes. ObjectiveTo use observational quasi-experimental methods using instrumental variables (IVs) to compare the effect of two hypoglycemic medications, sulfonylureas (SUs) and thiazolidinediones (TZDs), on long-term outcomes. MethodsThis study used administrative data from the Veterans Health Administration and Medicare from 2000 to 2010. The study population included US veterans dually enrolled in Medicare who received a prescription for metformin and then initiated SUs or TZDs. Patients could either continue on or discontinue metformin after the initiation of the second agent. Treatment was defined as starting either a SU or a TZD. Local variations in SU prescribing rates were used as instruments in IV models to control for selection bias. Survival models predicted all-cause mortality, ambulatory care sensitive condition hospitalizations, and stroke or heart attack (acute myocardial infarction). ResultsStarting on SUs compared to TZDs significantly increased the likelihood of experiencing mortality and ACSC hospitalization. The estimated hazard ratio for the effect of starting on SUs compared to TZDs was 1.50 (95% confidence interval [CI] 1.09–2.09) for all-cause mortality, 1.68 (95% CI 1.31–2.15) for ambulatory care sensitive condition hospitalization, and 1.15 (95% CI 0.80–1.66) for acute myocardial infarction or stroke. ConclusionsOur findings suggest increased risk of major adverse events associated with SUs as a second-line agent. Quasi-experimental IV methods may be an important alternative to lengthening clinical trials to assess long-term outcomes.

Potentially preventable medical hospitalizations among Maryland residents with mental illness, 2005-2010.

The goal of this study was to assess the association between mental illness and potentially preventable ambulatory care-sensitive (ACS) hospitalizations among children, adults, and older adults. This was a retrospective, cross-sectional study that used 2005-2010 Maryland hospital discharge data (N=508,142 hospitalizations). Logistic regression was used to assess the associations between mental illness and ACS hospitalizations. Any mental illness diagnosis was associated with heightened odds of ACS hospitalization in all three age groups. Any mental illness diagnosis was associated with 84% higher odds of ACS hospitalization among children, 32% higher odds of ACS hospitalization among adults, and 30% higher odds of ACS hospitalization among older adults. Mental illness was associated with increased odds of ACS hospitalization across the life span. Future research should examine the potential for integrated medical and behavioral health care models to address the poorly controlled somatic conditions that lead to ACS hospitalizations among persons with mental illness.

Depression and ambulatory care sensitive hospitalizations among Medicare beneficiaries with chronic physical conditions

ObjectiveWe examined the association between depression and hospitalizations for Ambulatory Care Sensitive Conditions (H-ACSC) among Medicare beneficiaries with chronic physical conditions. MethodsWe used a retrospective longitudinal design using multiple years (2002–2009) of linked fee-for-service Medicare claims and survey data from Medicare Current Beneficiary Survey to create six longitudinal panels. We followed individuals in each panel for a period of 3-years; first year served as the baseline and subsequent 2-years served as the follow-up. We measured depression, chronic physical conditions and other characteristics at baseline and examined H-ACSC at follow-up. We identified chronic physical conditions from survey data and H-ACSC and depression from fee-for-service Medicare claims. We analyzed unadjusted and adjusted relationships between depression and the risk of H-ACSC with chi-square tests and logistic regressions. ResultsAmong all Medicare beneficiaries, 9.3% had diagnosed depression. Medicare beneficiaries with depression had higher rates of any H-ACSC as compared to those without depression (13.6% vs. 7.7%). Multivariable regression indicated that, compared to those without depression, Medicare beneficiaries with depression were more likely to experience any H-ACSC. ConclusionsDepression was associated with greater risk of H-ACSC, suggesting that health care quality measures may need to include depression as a risk-adjustment variable.

PHS156 - Depression And Ambulatory Care Sensitive Hospitalizations Among Medicare Beneficiaries With Chronic Physical Conditions

Abstract Objective We examined the association between depression and hospitalizations for Ambulatory Care Sensitive Conditions (H-ACSC) among Medicare beneficiaries with chronic physical conditions. Methods We used a retrospective longitudinal design using multiple years (2002–2009) of linked fee-for-service Medicare claims and survey data from Medicare Current Beneficiary Survey to create six longitudinal panels. We followed individuals in each panel for a period of 3-years; first year served as the baseline and subsequent 2-years served as the follow-up. We measured depression, chronic physical conditions and other characteristics at baseline and examined H-ACSC at follow-up. We identified chronic physical conditions from survey data and H-ACSC and depression from fee-for-service Medicare claims. We analyzed unadjusted and adjusted relationships between depression and the risk of H-ACSC with chi-square tests and logistic regressions. Results Among all Medicare beneficiaries, 9.3% had diagnosed depression. Medicare beneficiaries with depression had higher rates of any H-ACSC as compared to those without depression (13.6% vs. 7.7%). Multivariable regression indicated that, compared to those without depression, Medicare beneficiaries with depression were more likely to experience any H-ACSC. Conclusions Depression was associated with greater risk of H-ACSC, suggesting that health care quality measures may need to include depression as a risk-adjustment variable.

Potentially avoidable hospital admissions in Germany: an analysis of factors influencing rates of ambulatory care sensitive hospitalizations.

The concept of ambulatory care sensitive hospitalization (ACSH) is based on the assumption that hospitalization for certain conditions might have been avoided by the timely provision of appropriate care outside the hospital. As preventive care and early treatment are often carried out in the ambulatory setting, ACSH have come to be viewed as an indicator of quality for this sector of the health-care system. Factors potentially influencing the regional distribution of ACSH were examined for four conditions-congestive heart failure, angina pectoris, arterial hypertension, and diabetes mellitus-with separate analyses for men and women. A regression analysis was performed on the basis of German nationwide data for the year 2008 (hospital statistics and population statistics). The data covered all areas of Germany. Each rise in the density of practice based specialists by 1 per 100,000 inhabitants was associated with a 0.1% reduction of ACSH in general and with a 0.3% reduction of ACSH for diabetes among men. A corresponding rise in the density of general practitioners was associated with reductions of ACSH among men by 0.1% for heart failure and by 0.5% for hypertension, yet also with increases of ACSH for angina pectoris (0.2% rise) and for diabetes (0.4% rise). Unemployment, residency in a rural area, and the number of hospital beds available locally were all positively correlated with small rises the ACSH rate. An age of 65 years and older was associated with the highest ACSH rates (0.7% to 3.6%). Overall, the analyzed variables were only weakly associated with the frequency of ambulatory care sensitive hospitalization. Future studies should consider further aspects such as the quality of care, comorbidities, and participation in healthcare programs.

The Small Area Predictors of Ambulatory Care Sensitive Hospitalizations: A Comparison of Changes over Time

The hospital admission for ambulatory care sensitive conditions (ACSCs) is a validated indicator of impeded access to good primary and preventive care services. The authors examine the predictors of ACSC admissions in small geographic areas in two cross-sections spanning an 11-year time interval (1995–2005). Using hospital discharge data from the Healthcare Cost and Utilization Project of the Agency for Healthcare Research and Quality for Arizona, California, Massachusetts, Maryland, New Jersey, and New York for the years 1995 and 2005, the study includes a multivariate cross-sectional design, using compositional factors describing the hospitalized populations and the contextual factors, all aggregated at the primary care service area level. The study uses ordinary least squares regressions with and without state fixed effects, adjusting for heteroscedasticity. Data is pooled over 2 years to assess the statistically significant changes in associations over time. ACSC admission rates were inversely related to the availability of local primary care physicians, and managed care was associated with declines in ACSC admissions for the elderly. Minorities, aged elderly, and percent under federal poverty level were found to be associated with higher ACSC rates. The comparative analysis for 2 years highlights significant declines in the association with ACSC rates of several factors including percent minorities and rurality. The two policy-driven factors, primary care physician capacity and Medicare-managed care penetration, were not found significantly more effective over time. Using small area analysis, the study indicates that improvements in socioeconomic conditions and geographic access may have helped improve the quality of primary care received by the elderly over the last decade, particularly among some minority groups.

Medical Group Practice Characteristics Influencing Inappropriate Emergency Department and Avoidable Hospitalization Rates

The inappropriate use of emergency departments (EDs) and ambulatory care sensitive hospital admission rates by patients attributed to a national sample of 212 medical group practices is documented, and the characteristics of practices that influence these rates are identified. Hospital-owned practices have higher nonemergent and emergent primary care treatable ED rates and higher ambulatory care sensitive hospitalization rates. Practices with electronic health records have lower inappropriate ED rates but those in rural areas have significantly higher rates. Practices with lower operating costs have higher inappropriate ED and ambulatory care sensitive rates, raising questions about the costs of preventing these incidents at the medical group practice level.

A systematic review of evidence on the association between hospitalisation for chronic disease related ambulatory care sensitive conditions and primary health care resourcing

BackgroundPrimary health care is recognised as an integral part of a country’s health care system. Measuring hospitalisations, that could potentially be avoided with high quality and accessible primary care, is one indicator of how well primary care services are performing. This review was interested in the association between chronic disease related hospitalisations and primary health care resourcing.MethodsStudies were included if peer reviewed, written in English, published between 2002 and 2012, modelled hospitalisation as a function of PHC resourcing and identified hospitalisations for type 2 diabetes as a study outcome measure. Access and use of PHC services were used as a proxy for PHC resourcing. Studies in populations with a predominant user pay system were excluded to eliminate patient financial barriers to PHC access and utilisation. Articles were systematically excluded based on the inclusion criteria, to arrive at the final set of studies for review.ResultsThe search strategy identified 1778 potential articles using EconLit, Medline and Google Scholar databases. Ten articles met the inclusion criteria and were subject to review. PHC resources were quantified by workforce (either medical or nursing) numbers, number of primary care episodes, service availability (e.g. operating hours), primary care practice size (e.g. single or group practitioner practice—a larger practice has more care disciplines onsite), or financial incentive to improve quality of diabetes care. The association between medical workforce numbers and ACSC hospitalisations was mixed. Four of six studies found that less patients per doctor was significantly associated with a decrease in ambulatory care sensitive hospitalisations, one study found the opposite and one study did not find a significant association between the two. When results were categorised by PHC access (e.g. GPs/capita, range of services) and use (e.g. n out-patient visits), better access to quality PHC resulted in fewer ACSC hospitalisations. This finding remained when only studies that adjusted for health status were categorised. Financial incentives to improve the quality of diabetes care were associated with less ACSC hospitalisations, reported in one study.ConclusionSeven of 12 measures of the relationship between PHC resourcing and ACSC hospitalisations had a significant inverse association. As a collective body of evidence the studies provide inconclusive support that more PHC resourcing is associated with reduced hospitalisation for ACSC. Characteristics of improved or increased PHC access showed inverse significant associations with fewer ACSC hospitalisations after adjustment for health status. The varied measures of hospitalisation, PHC resourcing, and health status may contribute to inconsistent findings among studies and make it difficult to interpret findings.

Preventing Dehydration-Related Hospitalizations: A Mixed-Methods Study of Parents, Inpatient Attendings, and Primary Care Physicians

The goal of this study was to identify the proportion of dehydration-related ambulatory care-sensitive condition hospitalizations, the reasons why these hospitalizations were preventable, and factors associated with preventability. A cross-sectional survey of primary care providers (PCPs), inpatient attending physicians, and parents was conducted in a consecutive series of children with ambulatory care-sensitive conditions admitted to an urban hospital over 14 months. Eighty-five children were diagnosed with dehydration. Their mean age was 1.6 years; most had public (74%) or no (17%) insurance, and were nonwhite (91%). The proportion of hospitalizations assessed as preventable varied from 12% for agreement among all 3 sources to 45% for any source. Parents identified inadequate prevention (50%), poor self-education (34%), and poor quality of care (38%) as key factors. PCPs identified parents providing insufficient home rehydration (33%), not visiting the clinic (25%), and not calling earlier (16%) as reasons. Inpatient attending physicians cited home rehydration (40%), delays in seeking care (40%), and lacking a PCP (20%) as contributors. Physicians (PCPs and inpatient attending physicians) were more likely than parents to describe the admission as inappropriate (75% vs 67% vs 0%; P < .01). Parental dissatisfaction with their child's PCP and a history of avoiding primary care due to costs or insurance problems were associated with significantly higher odds of preventable hospitalization. Up to 45% of dehydration-related hospitalizations may be preventable. Inadequate parental education by physicians, insufficient home rehydration, deferring clinic visits, insurance and cost barriers, inappropriate admissions, poor quality of care, and parental dissatisfaction with PCPs are the reasons that these hospitalizations might have been prevented.

The central role of comorbidity in predicting ambulatory care sensitive hospitalizations*

Ambulatory care sensitive hospitalizations (ACSHs) are commonly used as measures of access to and quality of care. They are defined as hospitalizations for certain acute and chronic conditions; yet, they are most commonly used in analyses comparing different groups without adjustment for individual-level comorbidity. We present an exploration of their roles in predicting ACSHs for acute and chronic conditions. Using 1998-99 US Medicare claims for 1 06 930 SEER-Medicare control subjects and 1999 Area Resource File data, we modelled occurrence of acute and chronic ACSHs with logistic regression, examining effects of different predictors on model discriminatory power. Flags for the presence of a few comorbid conditions-congestive heart failure, chronic obstructive pulmonary disease, diabetes, hypertension and, for acute ACSHs, dementia-contributed virtually all of the discriminative ability for predicting ACSHs. C-statistics were up to 0.96 for models predicting chronic ACSHs and up to 0.87 for predicting acute ACSHs. C-statistics for models lacking comorbidity flags were lower, at best 0.73, for both acute and chronic ACSHs. Comorbidity is far more important in predicting ACSH risk than any other factor, both for acute and chronic ACSHs. Imputations about quality and access should not be made from analyses that do not control for presence of important comorbid conditions. Acute and chronic ACSHs differ enough that they should be modelled separately. Unaggregated models restricted to persons with the relevant diagnoses are most appropriate for chronic ACSHs.

Schizophrenia and potentially preventable hospitalizations in the United States: a retrospective cross-sectional study.

BackgroundPersons with schizophrenia may face barriers to high quality primary care due to communication difficulties, cognitive impairment, lack of social support, and fragmentation of healthcare delivery services. As a result, this group may be at high risk for ambulatory care sensitive (ACS) hospitalizations, defined as hospitalizations potentially preventable by timely primary care. The goal of this study was to determine if schizophrenia is associated with overall, acute, and chronic ACS hospitalizations in the United States (US).MethodsWe conducted a retrospective cross-sectional study. Hospitalization data for the US were obtained from the Nationwide Inpatient Sample for years 2003–2008. We examined 15,275,337 medical and surgical discharges for adults aged 18–64, 182,423 of which had a secondary diagnosis of schizophrenia. ACS hospitalizations were measured using the Agency for Healthcare Research and Quality’s Prevention Quality Indicators (PQIs). We developed logistic regression models to obtain nationally-weighted odds ratios (OR) for ACS hospitalizations, comparing those with and without a secondary diagnosis of schizophrenia after adjusting for patient, hospitalization, and hospital characteristics.ResultsSchizophrenia was associated with increased odds of hospitalization for acute ACS conditions (OR = 1.34; 95% CI: 1.31, 1.38), as well as for chronic ACS conditions characterized by short-term exacerbations. Schizophrenia was associated with decreased odds of hospitalization for diabetes mellitus long-term complications and diabetes-related lower extremity amputation, conditions characterized by long-term deterioration.ConclusionsAdditional research is needed to determine which individual and health systems factors contribute to the increased odds of hospitalization for acute PQIs in schizophrenia.

Multimorbidity, Mental Illness, and Quality of Care: Preventable Hospitalizations among Medicare Beneficiaries

Background. Individuals with multimorbidity are vulnerable to poor quality of care due to issues related to care coordination. Ambulatory care sensitive hospitalizations (ACSHs) are widely accepted quality indicators because they can be avoided by timely, appropriate, and high-quality outpatient care. Objective. To examine the association between multimorbidity, mental illness, and ACSH. Study Design. We used a longitudinal panel design with data from multiple years (2000–2005) of Medicare Current Beneficiary Survey. Individuals were categorized into three groups: (1) multimorbidity with mental illness (MM/MI); (2) MM/no MI; (3) no MM. Multivariable logistic regressions were used to analyze the association between multimorbidity and ACSH. Results. Any ACSH rates varied from 10.8% in MM/MI group to 8.8% in MM/No MI group. Likelihood of any ACSH was higher among beneficiaries with MM/MI (AOR = 1.62; 95% CI = 1.14, 2.30) and MM (AOR = 1.54; 95% CI = 1.12, 2.11) compared to beneficiaries without multimorbidity. There was no statistically significant difference in likelihood of ACSH between MM/MI and MM/No MI groups. Conclusion. Multimorbidity (with or without MI) had an independent and significant association with any ACSH. However, presence of mental illness alone was not associated with poor quality of care as measured by ACSH.

Allowing Spouses to Be Paid Personal Care Providers: Spouse Availability and Effects on Medicaid-Funded Service Use and Expenditures

Medicaid service use and expenditure and quality of care outcomes in California's personal care program known as In-Home Supportive Service (IHSS) are described. Analyses investigated Medicaid expenditures, hospital use, and nursing home stays, comparing recipients who have paid spouse caregivers with those having other relatives or unrelated individuals as their caregivers. Medicaid claims and IHSS assessment data for calendar year 2005 were linked for IHSS recipients aged 18 years or older (n = 386,447) The rates of ambulatory care-sensitive hospital admissions and Medicaid-covered nursing home placements were at least comparable among IHSS recipients' with spouse, parent, other relative, or nonrelative caregivers. Statistically significant differences reflected more desirable outcomes for those with relatives as paid caregivers. In no comparisons did those with spouse providers have worse outcomes than those with nonrelative providers. Average monthly Medicaid expenditures for all services were also lower for IHSS recipients with family provider. There were no financial disadvantages and some advantages to Medicaid in terms of lower average Medicaid expenditures and fewer nursing home admissions when using spouses, parents, and other relatives as paid IHSS providers. This argues in favor of honoring the recipient's and family's preference for such providers.

Dual Medicare and Veteran Health Administration use and ambulatory care sensitive hospitalizations.

The objective of the study is to examine the association between ambulatory care sensitive hospitalizations (ACSH) and dual Medicare/Veteran Health Administration use. A nationally representative sample of Medicare beneficiaries, who participated in the Medicare Current Beneficiary Survey (MCBS). Cross-sectional analyses (N = 44,988) of linked fee-for-service Medicare claims and survey data from multiple years of the MCBS (2001-2005). Any ACSH and specific types of ACSH were measured using the list of prevention quality indicators developed by the Agency for Healthcare Research and Quality. Among veterans, dual Medicare/VHA use was defined as having inpatient or outpatient visits paid by VHA and consisted of three categories: 1) predominant-VHA use; 2) some VHA use and no VHA use. Unadjusted group differences in any ACSH were tested using chi-square tests. Logistic regressions were used to analyze the association between dual Medicare/VHA use and ACSH after controlling for demographic, socio-economic status, health status, functional status, smoking status and obesity. All analyses accounted for the complex design of the MCBS. Among inpatient users, 10.1% had ACSH events for acute conditions and 15.8% for chronic conditions. Among all survey respondents, 5% had any ACSH event. Among predominant-VHA users the rate was 4.9% and among veterans with some VHA use it was 3.7%. In bivariate and multivariate analyses, dual Medicare/VHA use was not significantly associated with any ACSH. In a representative sample of Medicare beneficiaries, despite low income and health status, veterans with dual Medicare/VHA use were as likely as veterans without dual use to have any ACSH, perhaps due to expanded healthcare access and emphasis on primary care in the VHA system.

Preventable Hospitalizations: Does Rurality or Non-Physician Clinician Supply Matter?

This study examines the relationship between rurality as well as the proportion of non-physician clinicians and county rates of ambulatory care sensitive hospitalizations (ACSHs) for pediatric, adult and elderly populations in Nebraska. The study design was a cross-sectional observational study of county level factors that affect the county level rates of ACSHs using Poisson regression models. Rural (non-metro) counties have significantly higher ACSHs for both pediatric and adult population, but not for the elderly. Frontier counties have significantly higher adult ACSHs. The proportion of primary care providers who are non-physician clinicians does not have a significant association with ACSHs for any of the age groups. The results indicate that rurality may have a greater impact on pediatric and adult ACSHs and the proportion of NPCs in the primary care provider workforce does not significantly impact ACSH rates.

Modeling the Impact of Medicare Advantage Payment Cuts on Ambulatory Care Sensitive and Elective Hospitalizations

To assess relationships between changes in Medicare Advantage (MA) payment rates and Medicare beneficiary hospitalizations and to simulate the effects of scheduled payment cuts on ambulatory care sensitive (ACS) and elective hospitalization rates. State Inpatient Database discharge abstracts from Arizona, Florida, and New York merged with administrative Medicare enrollment and MA payment data. Retrospective, fixed effect regression analysis of the relationship between MA payment rates and rates of ACS and elective hospitalizations among Medicare beneficiaries in counties with at least 10,000 Medicare beneficiaries and 3 percent MA penetration from 1999 to 2005. MA payment rates were negatively related to rates of ACS admissions. Simulations suggest that payment cuts could be associated with higher rates of ACS admissions. No relationship between MA payments and rates of elective hospitalizations was found. Reductions in MA payment rates may result in a small increase in ACS admissions. Trends in ACS admissions among chronically ill Medicare beneficiaries should be tracked following MA payment cuts.

Factors Associated With Potentially Preventable Hospitalization Among Nursing Home Residents in New York State With Chronic Kidney Disease

Identify clinical and organizational factors associated with potentially preventable ambulatory care sensitive (ACS) hospitalization among nursing home residents with chronic kidney disease. New York State Nursing home residents (n = 5449) age 60+ with chronic kidney disease and were hospitalized in 2007. Data included residents' sociodemographic and clinical characteristics, nursing home organizational factors, and ACS hospitalizations. Multivariate logistic regression quantified the association between potential determinants and ACS hospitalizations (yes versus no). Prevalence of chronic kidney disease among nursing home residents is 24%. Potentially avoidable ACS hospitalization among older nursing home residents with chronic kidney disease is 27%. Three potentially modifiable factors associated with significantly higher odds of ACS hospitalization include the following: presence of congestive heart failure (OR = 1.4; 95% CI 1.24-1.65), excessive medication use (OR = 1.3; 95% CI 1.11-1.48), and the lack of training provided to nursing staff on how to communicate effectively with physician about the resident's condition. (OR = 1.3; 95% CI 0.59-0.96). To reduce potentially preventable ACS hospitalization among chronic kidney disease patients, congestive heart failure and excessive medication use can be kept stable using relatively simple interventions by periodic multidisciplinary review of medications and assessing appropriate response to therapy; and communication training be provided to nursing staff on how to articulate to the responsible physician important changes in the patients' condition.

The Influence of Primary Care and Hospital Supply on Ambulatory Care–Sensitive Hospitalizations Among Adults in Brazil, 1999–2007

We assessed the influence of changes in primary care and hospital supply on rates of ambulatory care-sensitive (ACS) hospitalizations among adults in Brazil. We aggregated data on nearly 60 million public sector hospitalizations between 1999 and 2007 to Brazil's 558 microregions. We modeled adult ACS hospitalization rates as a function of area-level socioeconomic factors, health services supply, Family Health Program (FHP) availability, and health needs by using dynamic panel estimation techniques to control for endogenous explanatory variables. The ACS hospitalization rates declined by more than 5% annually. When we controlled for other factors, FHP availability was associated with lower ACS hospitalization rates, whereas private or nonprofit hospital beds were associated with higher rates. Areas with highest predicted ACS hospitalization rates were those with the highest private or nonprofit hospital bed supply and with low (< 25%) FHP coverage. The lowest predicted rates were seen for areas with high (> 75%) FHP coverage and very few private or nonprofit hospital beds. These results highlight the contribution of the FHP to improved health system performance and reflect the complexity of the health reform processes under way in Brazil.

Missed well-child care visits, low continuity of care, and risk of ambulatory care-sensitive hospitalizations in young children.

To determine if adherence to the recommended well-child care (WCC) visit schedule, independent of continuity of care (COC), is associated with lower risk of ambulatory care-sensitive hospitalizations (ACSH) and whether this association varies by chronic disease status. Population-based, retrospective cohort study. Hawaii's largest health plan from 1999 to 2006. A total of 36 944 children aged 3.5 years or younger were eligible if they were enrolled prior to 2 months of age, had 4 or more outpatient visits during the study period, and had an enrollment period that overlapped with 1 or more WCC visit interval. Patients' WCC visit adherence and COC index. Risk of ACSH (hazard ratio [HR]). Overall, 8921 (24%) children had 1 or more chronic disease. The proportion of ACSH among healthy children vs those with 1 or more chronic disease were 3% (n = 751) and 7% (n = 645), respectively. For children with chronic disease, those with the lowest WCC visit adherence (0%-25%) had 1.9 times (HR, 1.9; 95% confidence interval [CI], 1.5-2.5) the risk of ACSH compared with those in the highest category (75%-100%). The risk of ACSH for children with chronic disease who fell into the lowest COC category (0-0.25) was 2.4 times (HR, 2.4; 95% CI, 1.7-3.5) higher than for those who fell into the highest category (0.75-1.0). For children with chronic disease, both low WCC visit adherence and COC are independently associated with an increased risk of ACSH. Providing access to a consistent source of primary care appears to be important to this vulnerable population.

Clinical and Nonclinical Factors Associated With Potentially Preventable Hospitalizations Among Nursing Home Residents in New York State

Identify clinical and nonclinical factors associated with potentially preventable ambulatory care sensitive (ACS) hospitalization among nursing home residents. Residents (n=26,746) of 147 randomly selected nursing homes in New York State. Data included sociodemographics and clinical and nonclinical related factors. Multivariate linear regression quantified the association between potential determinants and ACS hospitalization. Four factors significantly associated with reduction in ACS hospitalization included nursing staff trained to communicate effectively with physicians regarding a resident's condition (P < .0001), physicians treat residents within the nursing home and admit to hospital as a last resort (P < .0001), provide better information and support to nurses and aides surrounding end-of-life care (P < .0001), and easy access to stat lab results in <4 hours on weekends (P < .0001). Two factors significantly associated with increased ACS hospitalization are: perceived likelihood illness will cause death (P < .0001) and perceived inadequate access to medical history/lab/EKGs (P < .0001). Preventable ACS hospitalization reduction depends on effective communication between physicians and nursing staff, providing physicians with easy access to stat results in <4 hours on weekends, and easy access to medical records/lab/EKGs. Use of electronic medical records and providing training to nursing staff on how to communicate effectively with physicians and how to articulate about a resident's condition may minimize preventable ACS hospitalizations.