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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
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1 to 4 of 4 Research Studies DisplayedWickwire EM, Tom SE, Scharf SM
Untreated insomnia increases all-cause health care utilization and costs among Medicare beneficiaries.
The purpose of this study was to examine the impact of untreated insomnia on health care utilization (HCU) among a representative sample of Medicare beneficiaries. Insomnia was defined as the presence of at least one claim containing an insomnia-related diagnosis in any given year based on ICD-9 or at least one prescription filled for an insomnia-related medication in Part D prescription drug files. Researchers compared HCU in the year prior to insomnia diagnosis with non-sleep disordered controls during the same period. The researchers conclude that the individuals in this randomly selected, representative sample with untreated insomnia demonstrated increased HCU and costs across all points of service.
AHRQ-funded; HS024560.
Citation: Wickwire EM, Tom SE, Scharf SM .
Untreated insomnia increases all-cause health care utilization and costs among Medicare beneficiaries.
Sleep 2019 Apr;42(4). doi: 10.1093/sleep/zsz007..
Keywords: Healthcare Costs, Healthcare Utilization, Medicare, Sleep Problems
Singh G, Agarwal A, Zhang W
Impact of PAP therapy on hospitalization rates in Medicare beneficiaries with COPD and coexisting OSA.
This retrospective cohort study analyzed data from a national sample of fee-for-service Medicare beneficiaries with a diagnosis of chronic obstructive pulmonary disease (COPD) and coexisting obstructive sleep apnea (OSA) who had begun positive airway pressure (PAP) therapy in 2011. The effect of PAP therapy on emergency room visits and hospitalizations for all-cause and COPD-related conditions was also examined. PAP therapy was more beneficial for older adults, those with higher COPD complexity, and those with three or more comorbidities. PAP therapy in elderly patients with overlap syndrome is associated with a reduction in hospitalization for COPD-related conditions, but not for all-cause hospitalizations or ER visits.
AHRQ-funded; HS020642; HS022134.
Citation: Singh G, Agarwal A, Zhang W .
Impact of PAP therapy on hospitalization rates in Medicare beneficiaries with COPD and coexisting OSA.
Sleep Breath 2019 Mar;23(1):193-200. doi: 10.1007/s11325-018-1680-0..
Keywords: Respiratory Conditions, Sleep Problems, Hospitalization, Medicare, Chronic Conditions
Albrecht JS, Wickwire EM, Vadlamani A
Trends in insomnia diagnosis and treatment among Medicare beneficiaries, 2006-2013.
In this study, the investigators examined trends in insomnia diagnosis and treatment among Medicare beneficiaries over an eight-year period. In this large national analysis of Medicare beneficiaries, prevalence of physician-assigned insomnia diagnoses was low but increased over time. Prevalence of insomnia medication use was up to four-times higher than insomnia diagnoses and remained steady over time.
AHRQ-funded; HS024560.
Citation: Albrecht JS, Wickwire EM, Vadlamani A .
Trends in insomnia diagnosis and treatment among Medicare beneficiaries, 2006-2013.
Am J Geriatr Psychiatry 2019 Mar;27(3):301-09. doi: 10.1016/j.jagp.2018.10.017..
Keywords: Diagnostic Safety and Quality, Elderly, Medicare, Sleep Problems
Starr P, Agarwal A, Singh G
Obstructive sleep apnea with chronic obstructive pulmonary disease among Medicare beneficiaries.
This research letter describes a claims-based study of Medicare beneficiaries conducted by the authors that examined the diagnosed prevalence and trend of overlap syndrome (the coexistence of chronic obstructive pulmonary disease [COPD] and obstructive sleep apnea [OSA] in a single individual). A total of 159,084 patients with COPD were included in the study; 11 percent had coexisting OSA. Data were gathered from multiple files: the Medicare Denominator File, the Medicare Provider Analysis and Review File, the Outpatient Standard Analytic File, the 100% Physician/Supplier Data File, and the Durable Medical Equipment File. Medicare enrollment files were used to gather information on patient characteristics and categorize subjects by age, sex, race, and socioeconomic status. The authors note that the prevalence of diagnosed overlap syndrome has increased fourfold during the 10-year study period.
AHRQ-funded; HS020642; HS022134.
Citation: Starr P, Agarwal A, Singh G .
Obstructive sleep apnea with chronic obstructive pulmonary disease among Medicare beneficiaries.
Ann Am Thorac Soc 2019 Jan;16(1):153-56. doi: 10.1513/AnnalsATS.201712-932OC..
Keywords: Sleep Problems, Respiratory Conditions, Medicare, Chronic Conditions