Medical resource utilisation and healthcare costs in patients with chronic hepatitis C viral infection and thrombocytopenia.
ABSTRACT Thrombocytopenia is a significant risk for patients with chronic HCV infection and a common side-effect of treatment with pegylated (PEG) interferon (IFN). Thrombocytopenia predisposes patients to bleeding and requirements for platelet transfusions, and may thus place an increased burden on patients and on medical resource utilisation.
In a retrospective analysis of an integrated, longitudinal database of medical and pharmacy claims and laboratory results in a US commercial health (insurance) plan, patients with chronic hepatitis C viral (HCV) infection were identified by reviewing ICD-9-CM HCV-, chronic liver disease-, and cirrhosis-related diagnoses. Medical resource utilisation and laboratory results were evaluated during the year following the HCV diagnosis index date as well as during the baseline year prior to that index date. Medical resource utilisation was determined by comparing outpatient visits, emergency department (ER) visits, and inpatient hospital stays for HCV patients with or without thrombocytopenia.
HCV patients diagnosed with thrombocytopenia had a greater incidence of bleeding events (27.3 vs. 9.9%), platelet transfusions (8.5 vs. <1%), liver disease-related ambulatory visits (10.4 vs. 4.4; odds ratio [OR] = 2.3; p < 0.001), ER visits (OR = 8.6; p < 0.01), and inpatient hospital stays (OR = 17.7; p < 0.01) during the study period compared with HCV patients without a thrombocytopenia diagnosis. HCV patients with thrombocytopenia had significantly higher overall healthcare costs ($37,924 vs. $12,174; p < 0.001) and liver disease-related costs ($14,569 vs. $4107; p < 0.001) than patients without thrombocytopenia.
Administrative claims data are subject to coding errors; additionally, the patient population may not be completely representative of the general chronic HCV population.
Diagnosis of thrombocytopenia in patients with HCV is associated with increased incidence of certain comorbidities, complications, and medical interventions, and significantly increased medical resource utilisation.
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ABSTRACT: Thrombocytopenia (TCP), defined as platelet counts <150,000/µL, is a common complication of severe chronic liver disease (CLD). This retrospective study estimated the prevalence of thrombocytopenia in a large population of CLD patients and compared medical resource utilization and medical care costs by TCP status. A retrospective analysis was conducted on a longitudinal administrative claims database from a large US commercial health plan. Patients assigned CLD diagnosis codes from January 1, 2000-December 31, 2003 were identified; annual ambulatory visits, ER visits, inpatient stays, and general and CLD-related medical care costs for patients with vs without TCP (identified using diagnosis codes and platelet count data if available) were compared. Of 56,445 patients with an ICD-9-CM diagnosis for CLD, 1289 (2.3%) had a diagnosis for TCP. CLD patients with vs without a TCP diagnosis had >2.5-times the annual number of liver disease-related ambulatory visits (3.6 vs 1.4; odds ratio [OR] = 2.6, p < 0.01); were 13-times more likely to have a liver-related inpatient stay (OR = 13.0, p < 0.01); were nearly 4-times more likely to have a liver-related ER visit (OR = 3.9, p < 0.01); had 3.5-fold greater mean annual overall medical care costs ($43,560 vs $12,270, p < 0.01); and had 7-fold greater annual liver disease-related medical care costs ($9940 vs $1420, p < 0.01). Similar results were seen for patients with platelet count data indicating TCP. CLD and TCP are not always diagnosed, nor is diagnosis uniform or standardized; administrative claims data are subject to coding errors, and individuals covered are not necessarily representative of the general US population. The number of CLD patients in this study with TCP (n = 1289) is small relative to that expected in the general US population. In this analysis, CLD patients with TCP used significantly more medical resources and incurred significantly higher medical care costs than those without TCP.Journal of Medical Economics 02/2012; 15(1):112-24. DOI:10.3111/13696998.2011.632463
- Digestive Diseases and Sciences 07/2012; 57(9):2466-72. DOI:10.1007/s10620-012-2302-5 · 2.55 Impact Factor
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ABSTRACT: BACKGROUND: Thrombocytopenia in chronic liver disease (CLD) typically reflects disease severity and may indicate an increased risk for bleeding. AIMS: To describe the longitudinal course of thrombocytopenia and risks for bleeding in veteran patients with non-hepatitis C-related CLD. METHODS: We identified 2,349 patients with non-hepatitis C-related CLD from databases of the New England Veterans Healthcare System between 1999 and 2008. The cohort was stratified by baseline platelet counts of <50,000, 50-100,000, > 100,000-150,000, and >150,000/μl. Primary outcomes were the incidence and hazard rates for bleeding episodes requiring hospitalization and incident severe thrombocytopenia (<50,000/μl). RESULTS: Over a median follow-up of 3.3 years (IQR 1.2, 6.3), incident major bleeds, predominantly gastrointestinal, occurred in 254 patients (10.8 % of the cohort) and in 19.9 % of those with baseline platelets <50,000/μl. Incident severe thrombocytopenia occurred in 315 patients (13.4 % of cohort) and in 40.7 % of those with baseline platelet counts between 50,000 and 100,000/μl. Baseline platelet counts between 50,000 and 100,000/μl independently predicted bleeding [adjusted HR 2.89 (1.76, 4.73) p < 0.001] as did esophageal varices, hemoglobin ≤9.9 g %, and INR 1.4-2.0. Incident severe thrombocytopenia and minimum platelet counts <25,000/μl each associated with bleeding episodes, but the average of minimum platelet counts recorded for those who bled was 76,000/μl. CONCLUSIONS: Among veteran patients with non-hepatitis C-related CLD, baseline platelet counts of 50,000 to 100,000/μl increased subsequent risks for both incident severe thrombocytopenia and major bleeding events. Whereas associations between severe thrombocytopenia and bleeding most likely reflect CLD severity, liver-related coagulopathies, and co-morbid bleeding risks, interventions to enhance platelet production may be beneficial for such patients.Digestive Diseases and Sciences 09/2012; DOI:10.1007/s10620-012-2404-0 · 2.55 Impact Factor