Browsing by Author "Li, L."

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    Pmh13 - Examining Prevalence, Incidence and Mortality Rates Among Opioid-Dependent Patients in the U.s. Medicare Population
    (2015) Li, L.; Shrestha, S.; Başer, Onur; Yuce H.; Li Wang
    OBJECTIVES: To examine incidence, prevalence and mortality rates among opioiddependent patients in the U.S. Medicare population. METHODS: A study was performed for the period from January 1, 2008 through December 31, 2012 to determinethe prevalence, incidence and mortality rates among opioid-dependent patients(International Classification of Diseases, 9th Revision, Clinical Modification diagnosis codes 304.0x and 304.7x) in the U.S. Medicare population. Patients who hadcontinuous fee-for-service Medicare health plan enrollment for the calendar yearand at least 2 years prior were selected for the study. Age- and gender-adjustedopioid dependence prevalence and incidence rates were calculated via direct standardization to the U.S. population age ?65 years in 2010 using gender-specific agegroups. RESULTS: The annual adjusted prevalence of opioid-dependent patientsincreased from 0.06% in 2008 to 0.35% in 2012. Incidence rates increased from 0.06%in 2008 to 0.10% in 2012. Prevalence rates were higher among women than men everyyear during the study period. Patients age 65-69 years had the highest prevalencerates during 2008 (0.09%), 2009 (0.16%), 2010 (0.22%) and 2011 (0.32%). However, in2012, patients who were age 70-74 years had the highest prevalence rates (0.43%).North American Natives had the highest prevalence of opioid dependence comparedto all other races. The highest incidence of opioid dependence was observed inNevada in 2008 (221.9 per 100,000 person-years) and 2012 (222.1 per 100,000 personyears). The 30-day and 1-year mortality rates decreased by 10.5% (3.8 to 3.4 per 1,000person-years) and 25.4% (17.3 to 12.9 per 1,000 person-years), respectively, from 2008to 2012. CONCLUSIONS: Opioid dependence incidence and prevalence decreasedfrom 2008 to 2012; however, opioid dependence-related mortality rates increased.
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    Prs12 - Mortality and Rehospitalization Rates Among Hospitalized Pneumonia Patients in the Us Medicare Population
    (2015) Li, L.; Shrestha, S.; Başer, Onur; Yuce, H; Wang, L
    Objectives: To examine the mortality and rehospitalization rates among hospitalized U.S. Medicare patients diagnosed with pneumonia. Methods: Using U.S.Medicare data, 30-day and 1-year mortality rates as well as rehospitalization rateswere calculated for patients with a primary diagnosis of pneumonia (InternationalClassification of Diseases, 9th Revision, Clinical Modification [ICD-9-CM] codes480.0-483.99 or 485-487) or a secondary discharge diagnosis of pneumonia witha primary diagnosis of respiratory failure (ICD-9-CM code 518.81) or sepsis (038.xx). Patients with continuous enrollment in a fee-for-service Medicare healthplan throughout the calendar year, and at least 2 years prior, were included inthe study. Age- and gender-adjusted readmission rates were calculated by directstandardization of the U.S. population age ?65 years in 2010 using gender-specificage groups. Results: The 30-day and 1-year mortality rates increased by 5.9% (17 to18 per 1,000 person-years) and 13.2% (38 to 43 per 1,000 person-years), respectively,from 2008 to 2012. The overall adjusted readmission rates were 3.82% in 2008, 3.93%in 2009, 3.98% in 2010 and 2011, and 3.17% in 2012. Men had higher readmission ratesthan women for all study years except 2011. Patients age 65-69 years had the highestreadmission rates in 2008 (4.47%), 2009 (4.59%) and 2011 (4.77%). In 2010, patients age70-74 years (4.41%), and in 2012, patients who were age 75-79 years (3.73%) had thehighest readmission rates. Black patients had the highest readmission rates in 2008(5.08%), North American Natives in 2009 (4.86%), other race in 2010 (5.87%), Hispanicsin 2011 (5.70%) and North American Natives in 2012 (7.11%). Conclusions: AmongU.S. Medicare beneficiaries diagnosed with pneumonia, mortality rates were higherfrom 2009 to 2012 than in 2008. Overall, hospital readmission rates were lower in2012 than 2008, after adjusting for age and gender. Readmission rates varied acrossrace and age groups.
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    Psy14 - Evaluating Trends in Chronic Pain Prevalence in the United States Veterans Health Administration Population
    (2015) Li, L.; Shrestha, S.; Başer, Onur; Yuce, H; Wang, L
    OBJECTIVES: The current study examined chronic pain prevalence in the U.S. Veterans Health Administration (VHA) population. METHODS: The study sample was based on the VHA Medical SAS Datasets from fiscal year 2008 through 2012. All patients diagnosed with chronic pain throughout the study period were identified using International Classification of Diseases, 9th Revision, Clinical Modification diagnosis codes 338.2 and 338.4. The variation in the prevalence of chronic pain was assessed and categorized according to the pain scale. Pain score was determined using a scale ranging from 0 to 10 as reported by patients using the following categories: 1 to 4: mild, 5 to 6: moderate and ?7: severe pain. To identify prior prevalence cases, we restricted continuous enrollment throughout that fiscal year and at least 2 years prior