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Outcomes for Medicare Asthma Patients Taking Fluticasone Propionate/Salmeterol Xinafoate Combination Versus Inhaled Corticosteroids or Other Combination Therapy

This study has been completed.
Information provided by (Responsible Party):
GlaxoSmithKline Identifier:
First received: June 10, 2010
Last updated: May 23, 2017
Last verified: May 2017
The objective of this study is to compare healthcare utilization and costs in Medicare-eligible asthma patients (aged >65) who receive fluticasone propionate/salmeterol xinafoate combination or inhaled corticosteroids in a typical clinical practice using a retrospective observational cohort study design of large managed care database. Outcomes on interest include asthma related severe exacerbations defined as asthma related emergency department visits, hospitalizations or combined emergency department/hospitalization. Other outcomes of interest include use of albuterol, oral corticosteroids and overall asthma related costs. Outcomes of interest will be compared between the two treatment cohorts (fluticasone propionate/salmeterol xinafoate combination or inhaled corticosteroids). Dichotomous outcomes (emergency visits, hospitalizations etc) will be compared using Cox regression hazards analysis assessing time to first event for each asthma related endpoint adjusting for differences in baseline demographics such as age, gender, previous asthma medication use, co morbidities, costs, and plan demographics. Total asthma related costs will also be compared using generalized linear models adjusting for baseline differences.

Condition Intervention
Drug: fluticasone propionate/salmeterol xinafoate combination
Drug: inhaled corticosteroids

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Outcomes for Medicare Asthma Patients Taking Fluticasone Propionate/Salmeterol Xinafoate Combination Versus Inhaled Corticosteroids or Other Combination Therapy

Resource links provided by NLM:

Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Mean Number of Post-index Asthma-related Events Measured Using Medical and Pharmacy Claims [ Time Frame: Up to 7 years from July 1, 2001 to June 30, 2008 ]
    Asthma-related events were defined as events with any primary ICD-9 code of 493.xx for hospitalizations, emergency department visits, and combined hospitalization/emergency department visits. The post-index period is defined as 3-12 months after either the first administration of fluticasone propionate and salmetrol or inhaled corticosteroids. Medical and pharmacy claims are recorded healthcare encounters in a large managed care administrative insurance database.

Secondary Outcome Measures:
  • Mean Asthma-related Costs in the Post-index Period [ Time Frame: Up to 7 years from July 1, 2001 to June 30, 2008 ]
    Asthma-related costs were calculated as pharmacy costs, medical costs, and total asthma (pharmacy plus medical) costs. Medical costs were made up of asthma-related visits, hospitalizations, emergency department visits, and medical office visits. Pharmacy costs were comprised of all asthma-related medications used during the follow-up period. Medical services were identified by place of service and PharMetrics-specific confinement codes. Prescriptions were counted by 30-day fills, with fills less than 30 days rounded up to indicate one fill.

  • Mean Number of Albuterol (Short-acting β-Agonists) Canisters Dispensed Per Pharmacy Claim Per Participant [ Time Frame: Up to 7 years from July 1, 2001 to June 30, 2008 ]
    The number of albuterol canisters dispensed was used as a surrogate marker of asthma symptoms.

Enrollment: 17448
Study Start Date: July 2009
Study Completion Date: April 2010
Primary Completion Date: April 2010 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Medicare-eligible subjects with asthma
Asthma subjects at least 65 years of age enrolled in a large Medicare managed care health plan.
Drug: fluticasone propionate/salmeterol xinafoate combination
Fluticasone propionate/salmeterol xinafoate combination for asthma, all doses (100mcg/50mcg, 250 mcg/50mcg and 500 mcg/50mcg)
Other Name: Advair (TM)
Drug: inhaled corticosteroids
Inhaled corticosteroids: beclomethasone dipropionte, mometasone, fluticasone propionate, budesonide, and flunisolide


Ages Eligible for Study:   65 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Medicare-eligible subjects age 65 years and older with a diagnosis of asthma being treated with an inhaled corticosteroid

Inclusion Criteria:

  • Subjects with asthma as determined by ICD-9 codes and asthma drug use
  • at least 65 years of age
  • prescription for an inhaled corticosteroid

Exclusion Criteria:

  • a diagnosis of chronic obstructive pulmonary disease or
  • a prescription for a chronic obstructive pulmonary disease treatment
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01347060

Sponsors and Collaborators
Study Director: GSK Clinical Trials GlaxoSmithKline
  More Information

Responsible Party: GlaxoSmithKline Identifier: NCT01347060     History of Changes
Other Study ID Numbers: 112605
Study First Received: June 10, 2010
Results First Received: May 5, 2011
Last Updated: May 23, 2017

Keywords provided by GlaxoSmithKline:
Advair and inhaled corticosteroids

Additional relevant MeSH terms:
Bronchial Diseases
Respiratory Tract Diseases
Lung Diseases, Obstructive
Lung Diseases
Respiratory Hypersensitivity
Hypersensitivity, Immediate
Immune System Diseases
Fluticasone Propionate, Salmeterol Xinafoate Drug Combination
Salmeterol Xinafoate
Anti-Inflammatory Agents
Bronchodilator Agents
Autonomic Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Anti-Asthmatic Agents
Respiratory System Agents
Dermatologic Agents
Anti-Allergic Agents
Hormones, Hormone Substitutes, and Hormone Antagonists
Adrenergic beta-2 Receptor Agonists
Adrenergic beta-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents processed this record on May 25, 2017