A Study in South Korea Using Medical Records to Look at Different Treatments for Chronic Obstructive Airway Disease (COPD)
CITRUS Study (Comparing the Incidence Between Tiotropium and ICS/LABA in Real World Use in South Korea)
1 other identifier
observational
9,284
1 country
1
Brief Summary
Non-interventional, Single-country study based on existing data from medical records of COPD patients treated with LAMA or fixed dose combination of ICS/LABA
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Apr 2020
Shorter than P25 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
November 18, 2019
CompletedFirst Posted
Study publicly available on registry
November 21, 2019
CompletedStudy Start
First participant enrolled
April 15, 2020
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2020
CompletedStudy Completion
Last participant's last visit for all outcomes
December 31, 2020
CompletedResults Posted
Study results publicly available
April 7, 2022
CompletedApril 7, 2022
February 1, 2022
9 months
November 18, 2019
December 20, 2021
February 8, 2022
Conditions
Outcome Measures
Primary Outcomes (11)
Incidence Rate for the First Pneumonia Event
Pneumonia was defined as ≥1 inpatient or outpatient claims 1) with ICD-10 codes for pneumonia recorded as any diagnosis in inpatient claims or primary \~ 4th secondary diagnosis in outpatient claims, AND 2) with diagnostic test code for chest-X ray or chest- computed tomography (CT), AND 3) with antibiotics prescription during the following period after the index date. To assess the incidence of pneumonia event, the first pneumonia event observed during the follow-up period was considered. Incidence rate for the first pneumonia event was calculated as below: Incidence rate per 1000 person-years= Number of patients with event/ sum of event-free period during the follow-up period (1000 person-years)
From the index date (i.e. between 01 January 2005 and 30 April 2015) up to the earliest of discontinuation of the index drug (i.e. LAMA or ICS/LABA), death, or 30 April 2016 (i.e. cut-off date for data retrieving), up to 136 months.
Incidence Rate of Pneumonia Events
Pneumonia was defined as ≥1 inpatient or outpatient claims 1) with ICD-10 codes for pneumonia recorded as any diagnosis in inpatient claims or primary \~ 4th secondary diagnosis in outpatient claims, AND 2) with diagnostic test code for chest-X ray or chest- computed tomography (CT), AND 3) with antibiotics prescription during the following period after the index date. This outcome measure reports: Total number of pneumonia events/ sum of follow-up duration (person-years) for all participants
From the index date (i.e. between 01 January 2005 and 30 April 2015) up to the earliest of discontinuation of the index drug (i.e. LAMA or ICS/LABA), death, or 30 April 2016 (i.e. cut-off date for data retrieving), up to 136 months.
Time to First Pneumonia Event From the Index Date
Pneumonia was defined as ≥1 inpatient or outpatient claims 1) with ICD-10 codes for pneumonia recorded as any diagnosis in inpatient claims or primary \~ 4th secondary diagnosis in outpatient claims, AND 2) with diagnostic test code for chest-X ray or chest- computed tomography (CT), AND 3) with antibiotics prescription during the following period after the index date. Date of pneumonia event was defined as the starting date of outpatient claim, or as the admission date of inpatient claim with the above 3 conditions to define pneumonia event. Mean and Standard Deviation of time to first pneumonia event from the index date was estimated using the Kaplan-Meier curve.
From the index date (i.e. between 01 January 2005 and 30 April 2015) up to the earliest of discontinuation of the index drug (i.e. LAMA or ICS/LABA), death, or 30 April 2016 (i.e. cut-off date for data retrieving), up to 136 months.
Number of Patients With Pneumonia Event
Pneumonia was defined as ≥1 inpatient or outpatient claims 1) with ICD-10 codes for pneumonia recorded as any diagnosis in inpatient claims or primary \~ 4th secondary diagnosis in outpatient claims, AND 2) with diagnostic test code for chest-X ray or chest- computed tomography (CT), AND 3) with antibiotics prescription during the following period after the index date. Number of patients with pneumonia event is reported.
From the index date (i.e. between 01 January 2005 and 30 April 2015) up to the earliest of discontinuation of the index drug (i.e. LAMA or ICS/LABA), death, or 30 April 2016 (i.e. cut-off date for data retrieving), up to 136 months.
Incidence Rate of the First Chronic Obstructive Pulmonary Disease (COPD) Exacerbation Event (All Types)
To assess the incidence of COPD exacerbation event (all types), the first COPD exacerbation event among pre-defined moderate COPD exacerbation and severe COPD exacerbation event observed within the 12-month period after the index date was considered. Moderate COPD exacerbation was defined as ≥ 1 outpatient claims 1) with ICD-10 codes for COPD recorded as primary \~ 4th secondary diagnosis, AND 2) with systemic steroids and/or antibiotics prescription within 12 months after the index date. Severe COPD exacerbation was defined as ≥ 1 Emergency Room (ER) visit or inpatient claims 1) with ICD-10 codes for COPD or diseases due to COPD worsening as any diagnosis, AND 2) with systemic steroids and/or antibiotics prescription. Incidence rate of COPD exacerbation events (all types) was calculated as below: Incidence rate per 1000 person-years= Number of patients with event/sum of event-free period during the follow-up period (1000 person-years)
Up to 12 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
Incidence Rate of Chronic Obstructive Pulmonary Disease (COPD) Exacerbation Events (All Types)
To assess the frequency of all types (moderate and severe) COPD exacerbation events, any events observed within the 12-month period after the index date was considered. Moderate COPD exacerbation was defined as ≥ 1 outpatient claims 1) with ICD-10 codes for COPD recorded as primary \~ 4th secondary diagnosis, AND 2) with systemic steroids and/or antibiotics prescription within 12 months after the index date. Severe COPD exacerbation was defined as ≥ 1 Emergency Room (ER) visit or inpatient claims 1) with ICD-10 codes for COPD or diseases due to COPD worsening as any diagnosis, AND 2) with systemic steroids and/or antibiotics prescription. Outcome measure reports: Total number of COPD exacerbation events (all types)/sum of follow-up duration (person-years) for all participants
Up to 12 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
Number of Patients With Chronic Obstructive Pulmonary Disease (COPD) Exacerbation Events
Number of patients with Chronic Obstructive Pulmonary Disease (COPD) exacerbation (moderate or severe) events is reported. Moderate COPD exacerbation was defined as ≥ 1 outpatient claims 1) with ICD-10 codes for COPD recorded as primary \~ 4th secondary diagnosis, AND 2) with systemic steroids and/or antibiotics prescription within 12 months after the index date. Severe COPD exacerbation was defined as ≥ 1 Emergency Room (ER) visit or inpatient claims 1) with ICD-10 codes for COPD or diseases due to COPD worsening as any diagnosis, AND 2) with systemic steroids and/or antibiotics prescription.
Up to 12 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
Time to First Chronic Obstructive Pulmonary Disease (COPD) Exacerbation Event From the Index Date
Mean and Standard Deviation of time to first COPD exacerbation (moderate or severe) event from the index date was estimated using the Kaplan-Meier curve. Moderate COPD exacerbation was defined as ≥ 1 outpatient claims 1) with ICD-10 codes for COPD recorded as primary \~ 4th secondary diagnosis, AND 2) with systemic steroids and/or antibiotics prescription within 12 months after the index date. Severe COPD exacerbation was defined as ≥ 1 Emergency Room (ER) visit or inpatient claims 1) with ICD-10 codes for COPD or diseases due to COPD worsening as any diagnosis, AND 2) with systemic steroids and/or antibiotics prescription. Date of severe COPD exacerbation event was defined as the starting date of ER claims or admission date of inpatient claims with the above 2 conditions to define moderate COPD exacerbation event.
Up to 12 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
Incidence Rate of Initiating Triple Combination Therapy
To assess the incidence rate of initiating triple combination therapy, the first triple combination therapy observed during the follow-up period was considered. Triple combination therapy of inhaled corticosteroids (ICS), long-acting beta agonists (LABA) and long-acting muscarinic antagonists (LAMA) was defined as ≥ 1 outpatient or inpatient claims with a combination of ICS, LABA, and LAMA. Three components of ICS, LABA and LAMA MUST have been prescribed together in a same prescription issued on same date to be considered as triple combination therapy (i.e. ICS/LABA fixed dose combination (FDC) and LAMA, ICS and LABA/LAMA FDC, ICS/LABA FDC and LABA/LAMA FDC, ICS and LABA and LAMA are all considered as triple combination therapy). Incidence rate of initiating triple combination therapy is reported as: Incidence rate per 1000 person-years= Number of patients with event/ sum of event-free period during the follow-up period (1000 person-years)
From the index date (i.e. between 01 January 2005 and 30 April 2015) up to the earliest of discontinuation of the index drug (i.e. LAMA or ICS/LABA), death, or 30 April 2016 (i.e. cut-off date for data retrieving), up to 136 months.
Number of Patients Who Initiated a Triple Combination Therapy
Number of patients who initiated a triple combination therapy is reported. Triple combination therapy of inhaled corticosteroids (ICS), long-acting beta agonists (LABA) and long-acting muscarinic antagonists (LAMA) was defined as ≥ 1 outpatient or inpatient claims with a combination of ICS, LABA, and LAMA. Three components of ICS, LABA and LAMA MUST have been prescribed together in a same prescription issued on same date to be considered as triple combination therapy (i.e. ICS/LABA fixed dose combination (FDC) and LAMA, ICS and LABA/LAMA FDC, ICS/LABA FDC and LABA/LAMA FDC, ICS and LABA and LAMA are all considered as triple combination therapy).
From the index date (i.e. between 01 January 2005 and 30 April 2015) up to the earliest of discontinuation of the index drug (i.e. LAMA or ICS/LABA), death, or 30 April 2016 (i.e. cut-off date for data retrieving), up to 136 months.
Time to Initiating Triple Combination Therapy From the Index Date
Median and Inter-Quartile Range of time to initiating triple combination therapy from the index date was estimated using the Kaplan-Meier curve. Triple combination therapy of inhaled corticosteroids (ICS), long-acting beta agonists (LABA) and long-acting muscarinic antagonists (LAMA) was defined as ≥ 1 outpatient or inpatient claims with a combination of ICS, LABA, and LAMA. Three components of ICS, LABA and LAMA MUST have been prescribed together in a same prescription issued on same date to be considered as triple combination therapy (i.e. ICS/LABA fixed dose combination (FDC) and LAMA, ICS and LABA/LAMA FDC, ICS/LABA FDC and LABA/LAMA FDC, ICS and LABA and LAMA are all considered as triple combination therapy). Date of triple combination therapy was defined as the starting date of outpatient claim or admission date of inpatient claim with a combination of ICS/LABA and LAMA.
From the index date (i.e. between 01 January 2005 and 30 April 2015) up to the earliest of discontinuation of the index drug (i.e. LAMA or ICS/LABA), death, or 30 April 2016 (i.e. cut-off date for data retrieving), up to 136 months.
Secondary Outcomes (38)
All-cause Healthcare Resource Utilization (HCRU): Number of Any Medical Visit (Per Person Per Month)
Up to 36 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
All-cause Healthcare Resource Utilization (HCRU): Number of Outpatient Visits (Per Person Per Month)
Up to 36 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
All-cause Healthcare Resource Utilization (HCRU): Number of Inpatient Visits (Per Person Per Month)
Up to 36 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
All-cause Healthcare Resource Utilization (HCRU): Number of Emergency Room (ER) Visits (Per Person Per Month)
Up to 36 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
All-cause Healthcare Resource Utilization (HCRU): Number of Intensive Care Unit (ICU) Visits (Per Person Per Month)
Up to 36 months from the index date. Index date was between 01 January 2005 and 30 April 2015.
- +33 more secondary outcomes
Study Arms (2)
LAMA
Chronic obstructive pulmonary disease (COPD) patients who were prescribed long-acting muscarinic antagonists (LAMA) monotherapy between 01 January 2005 and 30 April 2015.
ICS/LABA
Chronic obstructive pulmonary disease (COPD) patients who were prescribed a fixed-dose combination (FDC) of inhaled corticosteroid (ICS)/long-acting beta agonists (LABA) between 01 January 2005 and 30 April 2015.
Interventions
Eligibility Criteria
Subjects with chronic obstrutive pulmonary disease
You may qualify if:
- Diagnosed with COPD \[based on ICD-10 code(J43.x-44.x except J430), as the primary or within the fourth secondary diagnosis and initiated LAMA or ICS/LABA more than twice a year from Jan 1, 2005 to Apr 30 2016\].
- Age \>55 years old
You may not qualify if:
- Prescription history with any long acting bronchodilator for maintenance therapy (the patient should be inhaler naïve)
- Prescription history with ipratropium bromide
- Prescription history with Leukotriene receptor antagonist(LTRA) or ICS
- Patients with lung cancer, IPF, ILD or lung transplantation at the time of COPD diagnosis
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Konkuk University Medical Center
Seoul, 05030, South Korea
Related Links
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Boehringer Ingelheim, Call Center
- Organization
- Boehringer Ingelheim
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- RETROSPECTIVE
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 18, 2019
First Posted
November 21, 2019
Study Start
April 15, 2020
Primary Completion
December 31, 2020
Study Completion
December 31, 2020
Last Updated
April 7, 2022
Results First Posted
April 7, 2022
Record last verified: 2022-02
Data Sharing
- IPD Sharing
- Will not share
Clinical studies sponsored by Boehringer Ingelheim, phases I to IV, interventional and non-interventional, are in scope for sharing of the raw clinical study data and clinical study documents. Exceptions might apply, e.g. studies in products where Boehringer Ingelheim is not the license holder; studies regarding pharmaceutical formulations and associated analytical methods, and studies pertinent to pharmacokinetics using human biomaterials; studies conducted in a single center or targeting rare diseases (in case of low number of patients and therefore limitations with anonymization). For more details refer to: https://www.mystudywindow.com/msw/datatransparency