oral antibiotic therapy for acnediagnoses that may require long-term antibiotic use folliculitis...
TRANSCRIPT
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Oral Antibiotic Therapy for Acne
Project leads:
Robert Dellavalle, Professor of Dermatology
Lisa Schilling, Professor of Medicine
University of Colorado School of Medicine
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TeamDermatology Research Fellows:
Chandler Rundle
Chante Aksut
Statistician:
Megan Branda
Participating Sites:
Dylan Ray (U. Colorado Hospital-Health Data Compass),
Sara Deakyne (Colorado Children's Hospital)
Dermatologist advisors:
John Barbieri (U. Penn), Jonathan Silverberg (Northwestern)
David Margolis (U. Penn)
Protocol advisors:
Chris Knoll, Patrick Ryan, Martijn Schuemie
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Funding
▪Pfizer Independent Grants for Learning and Change
(PI: Dellavalle) 7/1/18-6/30/20 Inflammatory and
Immune-mediated Skin Disease Fellowship
▪Data Science to Patient Value (D2V)
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Goals▪Update community on current status
▪Recruit collaborating sites/partners
▪Gain clarity on use of clinical vs. claims data
▪-? Difference in query design, ? Overlapping patients
▪Concerns regarding abx prescribing data (clinical data
sources) – i.e., use of refill info in prescriptions,
definitions ‘courses of antibiotics’
▪Ensure data request to partners meets their criteria
(ie, de-identified data, efficient, SQL dialect)
▪Ensure we follow OHDSI protocol
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Study Objectives
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Why take antibiotics?
- Photo credits Wikipedia
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- Photo credits Wikipedia
To prevent big nasty
scarring pimples!
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Acne Disability
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Course Duration
-Barbieri et al, JAAD 2016
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Hypothesis
▪Type and duration of oral antibiotic therapy will vary
and often duration of courses will exceed guideline
recommendations.
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Methods
▪ Study Design▪ Retrospective observational cohort study
▪ Data Sources ▪ Electronic health record or Claims via the OMOP CDM
▪ Time period: 1/1/2015 to 12/31/2019
▪ Data Collection▪ SQL query
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Inclusion Criteria
▪ Age▪ Persons between 12 and 40 years of age
▪ Minimum observation period▪ ≥12 months
▪ Diagnosis▪ Concept IDs representing acne
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Inclusion Criteria
▪Included antibiotic types and start dates
▪Sarecycline?
▪Antibiotic duration
▪1 course: ≥ 28 days and < 5 years
▪Prescription break of >30 days separates courses
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Antibiotic Courses
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Exclusion Criteria
▪Diagnoses that may require long-term antibiotic use▪Folliculitis decalvans, rosacea, etc
▪Medications known to exacerbate acne▪Hormones, neuropyschotherapeutic drugs, targeted therapies,
etc
▪Oral antibiotic courses > 5 years
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Primary Outcome
▪To describe type of oral antibiotic prescribed
▪Duration of oral antibiotic therapy used among
patients with diagnoses of acne
▪Characterize acne antibiotic pathways
▪Long-term antibiotic class prescribing patterns
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Limitations and Caveats
▪Coding
▪ICD codes
▪Country-to-country variation in antibiotic use
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Protection of Human Subjects
▪Use of de-identified data
▪Necessity of ensuring data request to partners meets
their criteria
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Results Dissemination
▪ OHDSI website
▪ Peer-reviewed scientific journal
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Study Protocol
▪Draft protocol now available on OHDSI Wiki
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Next Steps
▪Invite collaborators!
▪Receive commentary from collaborators
▪Post finalized code on GitHub
▪Obtain data from participating sites
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Thank You!