Questa pagina è stata tradotta automaticamente e l'accuratezza della traduzione non è garantita. Si prega di fare riferimento al Versione inglese per un testo di partenza.

Impact of Initiating Tiotropium Alone Versus Initiating Tiotropium in Combination With Fluticasone Propionate/Salmeterol Xinafoate Combination (FSC) on Chronic Obstructive Pulmonary Disease-related Outcomes in Patients With Pre-existing Exacerbations

19 maggio 2017 aggiornato da: GlaxoSmithKline

This was a retrospective cohort design using administrative claims data from Jan 1, 2003 through Sep 30, 2007, representing the years of available data, were used for this study. Managed care enrollees having at least one pharmacy claim for tiotropium (TIO) during the study period were identified as the target population. An index TIO prescription was defined as the first chronologically occurring pharmacy claim for TIO during the period Jan 1, 2004 to Aug 31, 2006, called the enrollment period. The date of the index TIO prescription was termed as the index Rx date, and the 1-year period before the index Rx date was termed as the pre-index period. The period after the index date was termed as the post-index date, and is further divided into a 30-day combination assessment period and a 1-year follow-up period. COPD clinical and economic outcomes were measured in a variable length follow up period.

The combination assessment period, defined as the 30-day period following the index Rx date, was used to categorize patients into 2 cohorts: TIO alone or TIO + FSC (fluticasone propionate/salmeterol xinofoate combination) depending on whether they use FSC in combination with TIO during this period. Combination therapy with TIO + FSC was defined as having an FSC claim on the same date as the TIO claim or a TIO and FSC pharmacy claim with overlapping days supply occurring within 30 days of index Rx date. Enrollees adding FSC for the first time after the 30-day combination assessment period were excluded from the sample, thus ensuring that the TIO-alone cohort is not using FSC. No outcomes were assessed in the 30-day combination assessment period. The 1-year period after the end of the 30-day combination assessment period was termed as the follow-up period and was used to assess all study outcomes. Enrollees were required to be continuously eligible in their health plans during the pre-index and post-index periods for a total of 25 months. An intent-to-treat approach was used for the analyses. Thus, patients identified to be in a drug therapy cohort were considered to be using that therapy during the entire follow-up period, regardless of therapy discontinuations.

Specifically the study hypothesis for the primary outcome being tested was:

Ho: There is no difference in risk of any COPD-related exacerbation between TIO+FSC and TIO cohorts Ha: There is a difference in risk of any COPD-related exacerbation between TIO+FSC and TIO cohorts

Hypothesis for the key secondary outcome of COPD-related costs that was tested was:

Ho: There is no difference in COPD-related costs between TIO+FSC and TIO cohorts Ha: There is a difference in COPD-related costs between TIO+FSC and TIO cohorts

Panoramica dello studio

Stato

Completato

Condizioni

Intervento / Trattamento

Tipo di studio

Osservativo

Iscrizione (Effettivo)

3333

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

40 anni e precedenti (Adulto, Adulto più anziano)

Accetta volontari sani

N/A

Sessi ammissibili allo studio

Tutto

Metodo di campionamento

Campione non probabilistico

Popolazione di studio

Data for managed-care enrollees age 40 and older with a diagnosis of COPD and an index event of at least one pharmacy claim for TIO during the study period (January 1, 2003 through April 30, 2008) were identified. Subjects were required to have ≥1 exacerbation in the pre-index period (defined as a COPD-related emergency room visit or hospitalization), ≥1 prescription claim for ipratropium or ipratropium/albuterol combination in the pre-index period, ≥2 prescriptions for TIO (including the index prescription) during the post-index period, no prescription for FSC during the pre-index period, and no exacerbation or hospital/emergency room visit within 30 days after the index date. ICD-9-CM code 490.xx, bronchitis not specified as chronic or acute, was included in an attempt to enhance the validity of the analysis by capturing patients with chronic bronchitis whose condition was coded incorrectly.

Descrizione

Inclusion Criteria:

  • Continuous health plan eligibility in the pre- and post-index periods
  • age ≥40 years at the index date
  • Presence of at least 1 claim with an ICD-9-CM code for COPD in any diagnosis field (490.xx, 491.xx, 492.xx, 496.xx) in the pre- and post-index period
  • ≥1 exacerbation in the pre-index period (defined as a COPD-related Emergency Room visit or hospitalization)
  • ≥1 prescription claim for ipratropium or ipratropium/albuterol combination in the pre-index period
  • an index event of at least one pharmacy claim for TIO (tiotropium) combination in the pre-index period during the study period (January 1, 2003 through April 30, 2008)
  • ≥2 prescriptions for TIO (including the index prescription) during the post-index period

Exclusion Criteria:

  • presence of comorbid conditions (respiratory cancer, cystic fibrosis, fibrosis due to tuberculosis [TB], and bronchiectasis, pneumonociosis, pulmonary fibrosis, pulmonary TB, sarcoidosis) during the pre- and post-index periods
  • use of FSC in pre-index period
  • exacerbation (emergency room visit or hospitalization) within 30 days after the index date

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Modelli osservazionali: Coorte
  • Prospettive temporali: Retrospettiva

Coorti e interventi

Gruppo / Coorte
Intervento / Trattamento
COPD patients
Patients who are at least 40 years of age and diagnosed with COPD using ICD-9 codes of 491.xx, 492.xx, and 496.xx in an administrative claims database.
Droga: TIO
Patients receiving tiotropium bromide at index within the study period.
Altri nomi:
  • Spiriva®
Droga: TIO+FSC
Patients receiving tiotropium bromide plus fluticasone propionate-salmeterol xinafoate combination at time of index within the study period.
Altri nomi:
  • Spiriva ® + ADVAIR ®

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Incidence Rate Per 100 Person Years of Hospitalization or Emergency Department (ED) Visit Related to Exacerbation of Chronic Obstructive Pulmonary Disease (COPD)
Lasso di tempo: Data were collected over a maximum period of 4 years
A severe exacerbation is defined as one with a primary diagnosis of COPD. A moderate exacerbation is an ED visit with a primary diagnosis of COPD, a physician visit with a diagnosis of COPD and a prescription for an oral corticosteroid, a physician visit with a diagnosis code for COPD and an antibiotic for respiratory infection, or physician administration of nebulized albuterol within 3 days of an office visit. Incidence rate is calculated by dividing the number of exacerbations by the number of person years. Person years adjust for different lengths of follow up for participants.
Data were collected over a maximum period of 4 years

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Adjusted Mean Monthly Costs Per COPD Patient by Treatment Group
Lasso di tempo: Data were collected over a maximum period of 4 years
The mean costs of health care encounters adjusted to control for baseline differences between treatment groups and reported in 2008 United States dollars as calculated with the consumer price index (CPI) are presented. CPI is standard multiplier for adjusting the cost of goods and services to a single year. Total costs include pharmacy and medical costs. Medical costs were computed from the paid amounts of medical claims with a primary diagnosis code for COPD. COPD-related pharmacy costs were computed from paid amounts of COPD-related prescription medications.
Data were collected over a maximum period of 4 years
Incidence Rate of Hospitalizations and Emergency Room Visits Per 100 Person Years
Lasso di tempo: Data were collected over a maximum period of 4 years
Unadjusted incidence rates per 100 person years of chronic obstructive pulmonary disease (COPD)-related hospitalizations and emergency department visits by treatment group are presented. Incidence rate is calculated by dividing the number of healthcare service encounters by the number of person years of follow up. Person years adjust for different lengths of follow up for individual participants
Data were collected over a maximum period of 4 years

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

GlaxoSmithKline

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio

1 luglio 2008

Completamento primario (Effettivo)

1 giugno 2010

Completamento dello studio (Effettivo)

1 settembre 2010

Date di iscrizione allo studio

Primo inviato

23 giugno 2011

Primo inviato che soddisfa i criteri di controllo qualità

23 giugno 2011

Primo Inserito (Stima)

27 giugno 2011

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

14 giugno 2017

Ultimo aggiornamento inviato che soddisfa i criteri QC

19 maggio 2017

Ultimo verificato

1 maggio 2017

Maggiori informazioni

Termini relativi a questo studio

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • 111266

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

Prove cliniche su TIO

Cerca prove simili

Sponsor e collaboratori

Condizioni mediche

Interventi farmacologici

CROs by country

CROs in Bulgaria

Condizioni

Malattie rare

Interventi farmacologici

Supplementi dietetici

Sponsor / Collaboratori

Sedi

Sottoscrivi