David M Kern

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BACKGROUND Natalizumab (Tysabri, Biogen Idec and Elan Pharmaceuticals) significantly reduces the relapse rate and disability progression, and improves health-related quality of life (HRQoL), in patients with relapsing-remitting multiple sclerosis. We investigated the impact of natalizumab on patient-reported outcomes (PROs) in a real-world setting. (More)
BACKGROUND Patients with asthma and chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) have more rapid disease progression and more exacerbations than do those with either condition alone. Little research has been performed, however, in these patients. OBJECTIVE The objective was to summarize the health care utilization, costs, and(More)
OBJECTIVE To describe the estimated prevalence and temporal trends of chronic kidney disease (CKD) treatment patterns, and the association between CKD and potential factors for type 2 diabetes mellitus (T2DM) in different demographic subgroups. RESEARCH DESIGN AND METHODS This was a cross-sectional analysis of adults with T2DM based on multiple US(More)
BACKGROUND For high-risk patients who do not achieve guideline-recommended LDL-C levels, more intensive treatment including statin-uptitration to higher doses or potency, as well as combination therapy may be considered. A better understanding of statin treatment patterns in real-world clinical practice may contribute to improved lipid-lowering management(More)
BACKGROUND To ensure adequate protection from seasonal influenza in the US, the Advisory Committee on Immunization Practices recommends vaccination of all persons aged 6 months or older, with rare exceptions. It also advises starting vaccination as soon as available and continuing throughout the influenza season. This study examined US seasonal vaccination(More)
INTRODUCTION Previous observational studies in the US suggest that opioid analgesic use increases the risk of cardiovascular (CV) events. The current study provides additional background event rates for five prespecified CV outcomes of interest in patients from three countries. METHODS Three observational cohort studies were conducted in patients from the(More)
OBJECTIVES To evaluate treatment patterns, healthcare resource utilization, and costs among patients within a large managed care population chronically using opioids for non-cancer pain. STUDY DESIGN Retrospective cohort study. METHODS Patients aged ≥18 years with ≥1 prescription initiating opioids between January 1, 2007, and December 31, 2011, who(More)
OBJECTIVE To compare clinical characteristics, statin treatment patterns and adherence among patients at different risk for coronary heart disease (CHD) as defined by National Cholesterol Education Program (NCEP) Adult Treatment Panel (ATP) III guidelines. METHODS Patients ≥ 18 years old with ≥ 1 claim for dyslipidemia, ≥ 1 statin claim, or ≥ 1 LDL-C(More)
BACKGROUND Inhaled corticosteroid/long-acting β2-agonist combinations (ICS/LABA) have emerged as first line therapies for chronic obstructive pulmonary disease (COPD) patients with exacerbation history. No randomized clinical trial has compared exacerbation rates among COPD patients receiving budesonide/formoterol combination (BFC) and(More)
BACKGROUND Staphylococcus aureus and Pseudomonas aeruginosa are major causes of pneumonia in intensive care unit (ICU) patients. Limited data exist regarding the health economic impact of S. aureus and P. aeruginosa pneumonias in the ICU setting. METHODS We conducted a retrospective observational cohort study using a 29.6 million enrollee US medical and(More)