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Appaneal HJ, Caffrey AR, Beganovic M, Avramovic S, LaPlante KL. Predictors of Clostridioides difficile recurrence across a national cohort of veterans in outpatient, acute, and long-term care settings. Am J Health Syst Pharm 2019; 76:581-590. [PMID: 31361830 DOI: 10.1093/ajhp/zxz032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
PURPOSE The greatest challenge in treating Clostridioides difficile infection (CDI) is disease recurrence, which occurs in about 20% of patients, usually within 30 days of treatment cessation. We sought to identify independent predictors of first recurrence among a national cohort of veterans with CDI. METHODS We conducted a case-control study among acute and long-term care Veterans Affairs (VA) inpatients and outpatients with a first CDI episode (positive stool sample for C. difficile toxin[s] and receipt of at least 2 days of CDI treatment) between 2010 and 2014. Cases experienced first recurrence within 30 days from the end of treatment. Controls were those without first recurrence matched 4:1 to cases on year, facility, and severity. Multivariable conditional logistic regression was used to identify predictors of first recurrence. RESULTS We identified 32 predictors of first recurrence among 974 cases and 3,896 matched controls. Significant predictors included medication use prior to (probiotics, fluoroquinolones, laxatives, third- or fourth-generation cephalosporins), during (first- or second-generation cephalosporins, penicillin/amoxicillin/ampicillin, third- and fourth-generation cephalosporins), and after CDI treatment (probiotics, any antibiotic, proton pump inhibitors [PPIs], and immunosuppressants). Other predictors included current biliary tract disease, malaise/fatigue, cellulitis/abscess, solid organ cancer, medical history of HIV, multiple myeloma, abdominal pain, and ulcerative colitis. CONCLUSION In a large national cohort of outpatient and acute and long-term care inpatients, treatment with certain antibiotics, PPIs, immunosuppressants, and underlying disease were among the most important risk factors for first CDI recurrence.
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Affiliation(s)
- Haley J Appaneal
- Infectious Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, RI, and College of Pharmacy, University of Rhode Island, Kingston, RI
| | - Aisling R Caffrey
- Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, RI, and College of Pharmacy, University of Rhode Island, Kingston, RI
| | - Maya Beganovic
- Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, RI, and College of Pharmacy, University of Rhode Island, Kingston, RI
| | - Sanja Avramovic
- Health Administration and Policy, George Mason University, Fairfax, VA
| | - Kerry L LaPlante
- Infectious Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, RI, and College of Pharmacy, University of Rhode Island, Kingston, RI
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Zilberberg MD, Nathanson BH, Marcella S, Hawkshead JJ, Shorr AF. Hospital readmission with Clostridium difficile infection as a secondary diagnosis is associated with worsened outcomes and greater revenue loss relative to principal diagnosis: A retrospective cohort study. Medicine (Baltimore) 2018; 97:e12212. [PMID: 30200134 PMCID: PMC6133633 DOI: 10.1097/md.0000000000012212] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Recurrent Clostridium difficile infection (rCDI) requiring rehospitalization contributes to poor outcomes, which may differ between patients hospitalized with versus for it.We performed a multicenter retrospective cohort study of rehospitalized adults surviving initial CDI hospitalization. Hospital mortality, length of stay (LOS), 30-day readmission, and mean gap between hospital costs and Diagnosis Related Group (DRG) reimbursement served as outcomes.Among the 25.7% (n = 99,175) survivors requiring rehospitalization, 36,504 (36.8%) had rCDI (14,005 [38.4%] principal diagnosis rCDI [PrCDI]). Compared with non-CDI, PrCDI, and secondary diagnosis rCDI [SrCDI] carried lower risk of death (PrCDI odds ratio [OR] 0.52; 95% confidence interval [CI] 0.46, 0.58; SrCDI OR 0.80; 95% CI 0.75, 0.85) and 30-day readmission (PrCDI OR 0.84; 95% CI 0.80, 0.88; SrCDI OR 0.97; 95% CI 0.94, 1.01), and excess LOS (PrCDI 1.8 days; 95% CI 1.7, 2.0; SrCDI 1.4 days; 95% CI 1.3, 1.5), and costs (PrCDI $1399; 95% CI $858, $1939; SrCDI $2809; 95% CI $2307, $3311). Mean gap between hospital costs and DRG reimbursements was highest in SrCDI ($13,803).A rehospitalization within 60-days of an initial CDI hospitalization occurs in approximately 25% of all survivors, 1/3 with rCDI. SrCDI carries worse outcomes than PrCDI. The potential loss of revenue incurred by the hospital is nearly 3-fold higher for SrCDI than PrCDI.
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Appaneal HJ, Caffrey AR, Beganovic M, Avramovic S, LaPlante KL. Predictors of Mortality Among a National Cohort of Veterans With Recurrent Clostridium difficile Infection. Open Forum Infect Dis 2018; 5:ofy175. [PMID: 30327788 DOI: 10.1093/ofid/ofy175] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 07/17/2018] [Indexed: 12/13/2022] Open
Abstract
Background Though recurrent Clostridium difficile infection (CDI) is common and poses a major clinical concern, data are lacking regarding mortality among patients who survive their initial CDI and have subsequent recurrences. Risk factors for mortality in patients with recurrent CDI are largely unknown. Methods Veterans Affairs patients with a first CDI (stool sample with positive C. difficile toxin(s) and ≥2 days CDI treatment) were included (2010-2014). Subsequent recurrences were defined as additional CDI episodes ≥14 days after the stool test date and within 30 days of the end of treatment. A matched (1:4) case-control analysis was conducted using multivariable conditional logistic regression to identify predictors of all-cause mortality within 30 days of the first recurrence. Results Crude 30-day all-cause mortality rates were 10.6% for the initial CDI episode, 8.3% for the first recurrence, 4.2% for the second recurrence, and 5.9% for the third recurrence. Among 110 cases and 440 controls, 6 predictors of mortality were identified: use of proton pump inhibitors (PPIs; odds ratio [OR], 3.86; 95% confidence interval [CI], 2.14-6.96), any antibiotic (OR, 3.33; 95% CI, 1.79-6.17), respiratory failure (OR, 8.26; 95% CI, 1.71-39.92), congitive dysfunction (OR, 2.41; 95% CI, 1.02-5.72), nutrition deficiency (OR, 2.91; 95% CI, 1.37-6.21), and age (OR, 1.04; 95% CI, 1.01-1.07). Conclusions In our national cohort of Veterans, crude mortality decreased by 44% from the initial episode to the third recurrence. Treatment with antibiotics, use of PPIs, and underlying comorbidities were important predictors of mortality in recurrent CDI. Our study assists health care providers in identifying patients at high risk of death after CDI recurrence.
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Affiliation(s)
- Haley J Appaneal
- Infectious Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, Rhode Island.,College of Pharmacy, University of Rhode Island, Kingston, Rhode Island.,Center of Innovation in Long-Term Support Services, Providence Veterans Affairs Medical Center, Providence, Rhode Island
| | - Aisling R Caffrey
- Infectious Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, Rhode Island.,College of Pharmacy, University of Rhode Island, Kingston, Rhode Island.,Center of Innovation in Long-Term Support Services, Providence Veterans Affairs Medical Center, Providence, Rhode Island.,Brown University School of Public Health, Providence, Rhode Island
| | - Maya Beganovic
- Infectious Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, Rhode Island.,College of Pharmacy, University of Rhode Island, Kingston, Rhode Island
| | - Sanja Avramovic
- Health Administration and Policy, George Mason University, Fairfax, Virginia
| | - Kerry L LaPlante
- Infectious Diseases Research Program, Providence Veterans Affairs Medical Center, Providence, Rhode Island.,College of Pharmacy, University of Rhode Island, Kingston, Rhode Island.,Center of Innovation in Long-Term Support Services, Providence Veterans Affairs Medical Center, Providence, Rhode Island.,Division of Infectious Diseases, Warren Alpert Medical School of Brown University, Providence, Rhode Island
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Delon F, Mayet A, Thellier M, Kendjo E, Michel R, Ollivier L, Chatellier G, Desjeux G. Assessment of the French National Health Insurance Information System as a tool for epidemiological surveillance of malaria. J Am Med Inform Assoc 2017; 24:588-595. [PMID: 28040684 PMCID: PMC7651946 DOI: 10.1093/jamia/ocw164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 11/02/2016] [Accepted: 11/14/2016] [Indexed: 11/13/2023] Open
Abstract
OBJECTIVE Epidemiological surveillance of malaria in France is based on a hospital laboratory sentinel surveillance network. There is no comprehensive population surveillance. The objective of this study was to assess the ability of the French National Health Insurance Information System to support nationwide malaria surveillance in continental France. MATERIALS AND METHODS A case identification algorithm was built in a 2-step process. First, inclusion rules giving priority to sensitivity were defined. Then, based on data description, exclusion rules to increase specificity were applied. To validate our results, we compared them to data from the French National Reference Center for Malaria on case counts, distribution within subgroups, and disease onset date trends. RESULTS We built a reusable automatized tool. From July 1, 2013, to June 30, 2014, we identified 4077 incident malaria cases that occurred in continental France. Our algorithm provided data for hospitalized patients, patients treated by private physicians, and outpatients for the entire population. Our results were similar to those of the National Reference Center for Malaria for each of the outcome criteria. DISCUSSION We provided a reliable algorithm for implementing epidemiological surveillance of malaria based on the French National Health Insurance Information System. Our method allowed us to work on the entire population living in continental France, including subpopulations poorly covered by existing surveillance methods. CONCLUSION Traditional epidemiological surveillance and the approach presented in this paper are complementary, but a formal validation framework for case identification algorithms is necessary.
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Affiliation(s)
- François Delon
- French Armed Forces Center for Epidemiology and Public Health, Marseille, France
| | - Aurélie Mayet
- French Armed Forces Center for Epidemiology and Public Health, Marseille, France
- UMR 912: INSERM–IRD–Aix-Marseille University, Marseille, France
| | - Marc Thellier
- National Reference Center for Malaria, Paris, France
| | - Eric Kendjo
- National Reference Center for Malaria, Paris, France
| | - Rémy Michel
- French Armed Forces Center for Epidemiology and Public Health, Marseille, France
- French Military Health Service Academy, Paris, France
| | - Lénaïck Ollivier
- Central Directorate of the French Military Health Service, Paris, France
| | - Gilles Chatellier
- Department of Computer Science, Biostatistics and Public Health, Georges Pompidou European Hospital, Paris, France
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Zilberberg MD, Shorr AF, Jesdale WM, Tjia J, Lapane K. Recurrent Clostridium difficile infection among Medicare patients in nursing homes: A population-based cohort study. Medicine (Baltimore) 2017; 96:e6231. [PMID: 28272217 PMCID: PMC5348165 DOI: 10.1097/md.0000000000006231] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
We explored the epidemiology and outcomes of Clostridium difficile infection (CDI) recurrence among Medicare patients in a nursing home (NH) whose CDI originated in acute care hospitals.We conducted a retrospective, population-based matched cohort combining Medicare claims with Minimum Data Set 3.0, including all hospitalized patients age ≥65 years transferred to an NH after hospitalization with CDI 1/2011-11/2012. Incident CDI was defined as ICD-9-CM code 008.45 with no others in prior 60 days. CDI recurrence was defined as (within 60 days of last day of CDI treatment): oral metronidazole, oral vancomycin, or fidaxomicin for ≥3 days in part D file; or an ICD-9-CM code for CDI (008.45) during a rehospitalization. Cox proportional hazards and linear models, adjusted for age, gender, race, and comorbidities, examined mortality within 60 days and excess hospital days and costs, in patients with recurrent CDI compared to those without.Among 14,472 survivors of index CDI hospitalization discharged to an NH, 4775 suffered a recurrence. Demographics and clinical characteristics at baseline were similar, as was the risk of death (24.2% with vs 24.4% without). Median number of hospitalizations was 2 (IQR 1-3) among those with and 0 (IQR 0-1) among those without recurrence. Adjusted excess hospital days per patient were 20.3 (95% CI 19.1-21.4) and Medicare reimbursements $12,043 (95% CI $11,469-$12,617) in the group with a recurrence.Although recurrent CDI did not increase the risk of death, it was associated with a far higher risk of rehospitalization, excess hospital days, and costs to Medicare.
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Affiliation(s)
- Marya D. Zilberberg
- EviMed Research Group, LLC, Goshen
- School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA
| | | | | | - Jennifer Tjia
- University of Massachusetts Medical School, Worcester, MA, USA
| | - Kate Lapane
- University of Massachusetts Medical School, Worcester, MA, USA
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A Comprehensive Study of Costs Associated With Recurrent Clostridium difficile Infection. Infect Control Hosp Epidemiol 2016; 38:196-202. [PMID: 27817758 DOI: 10.1017/ice.2016.246] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Clostridium difficile infection (CDI) is the most common healthcare-associated infection and is associated with considerable morbidity. Recurrent CDI is a key contributing factor to this morbidity. Despite an estimated 83,000 recurrences annually in the United States, there are few accurate estimates of costs associated with recurrent CDI. OBJECTIVE We performed this study (1) to identify the health consequences of recurrent CDI including need for repeat hospitalization, intensive care unit (ICU) stay, and surgery; (2) to determine costs associated with recurrent CDI and identify determinants of such costs; and (3) to compare the outcomes and costs of recurrent CDI to those who develop reinfection. METHODS We identified all patients with confirmed recurrent CDI between January to December 2013 at a single referral center. Healthcare burden associated with recurrence including diagnostic testing, pharmacologic treatment, and inpatient and outpatient healthcare visits were identified in the 12 months following the first recurrence. Total healthcare costs were calculated, and the predictors of high healthcare utilization were identified. RESULTS Our study population included 98 patients with recurrent CDI. The median interval between the initial infection and recurrence was 37 days. The mean age of the cohort was 67 years, two-thirds were women (62%), and the mean Charlson index was 8.6. During the year following the first recurrence of CDI, each patient underwent a mean of 4.4 stool C. difficile toxin tests and received a mean of 2.5 prescriptions for oral vancomycin (range, 0-6). Most patients (84%) with recurrence had a CDI-related hospitalization, and 6% underwent colectomy. The mean total CDI-associated cost was $34,104 per patient, with hospitalization costs accounting for 68%, surgery 20%, and drug treatment 8% of this cost, respectively. Extrapolating to the United States overall, we estimate an annual cost of $2.8 billion related to recurrent CDI. CONCLUSION Recurrent CDI is associated with considerable morbidity and cost. Infect Control Hosp Epidemiol 2017;38:196-202.
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Research Methods in Healthcare Epidemiology and Antimicrobial Stewardship: Use of Administrative and Surveillance Databases. Infect Control Hosp Epidemiol 2016; 37:1278-1287. [DOI: 10.1017/ice.2016.189] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Administrative and surveillance data are used frequently in healthcare epidemiology and antimicrobial stewardship (HE&AS) research because of their wide availability and efficiency. However, data quality issues exist, requiring careful consideration and potential validation of data. This methods paper presents key considerations for using administrative and surveillance data in HE&AS, including types of data available and potential use, data limitations, and the importance of validation. After discussing these issues, we review examples of HE&AS research using administrative data with a focus on scenarios when their use may be advantageous. A checklist is provided to help aid study development in HE&AS using administrative data.Infect Control Hosp Epidemiol 2016;1–10
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