Epidemiological study design and the advancement of equine health.
Authors: Fosgate G T, Cohent N D
Journal: Equine veterinary journal
Summary
# Editorial Summary Epidemiological research underpins evidence-based practice in equine medicine, yet the validity of clinical conclusions depends critically on understanding study design—a knowledge gap that remains problematic amongst equine professionals. Fosgate and Cohen provide a comprehensive overview of the principal methodological approaches available to researchers investigating equine health: distinguishing between observational studies (descriptive case series, analytical cohort and case-control designs, and cross-sectional surveys) and experimental designs such as randomised controlled trials, each with distinct strengths for answering different clinical questions. Whilst RCTs represent the gold standard for establishing causation and treatment efficacy, the authors emphasise that patient-centred observational epidemiological studies often generate the most clinically relevant evidence for equine practice, as they reflect real-world populations and naturally occurring disease. The practical implication is significant: equine professionals must develop competency in critically appraising study designs to avoid overinterpreting findings from descriptive case series whilst properly weighting evidence from well-designed cohort studies investigating risk factors or prognostic indicators. Strengthening this literacy across the profession will improve clinical decision-making and ensure that resources—whether in research funding, farriery time, or therapeutic intervention—are directed toward interventions supported by appropriate epidemiological evidence.
Read the full abstract on PubMed
Practical Takeaways
- •Understanding different study designs helps you critically evaluate research claims—cohort and case-control studies provide stronger evidence than case series for identifying true disease risk factors.
- •When reading equine health literature, recognize that observational studies (which dominate equine research) have limitations compared to RCTs; look for confounding factors that might explain reported associations.
- •Apply study design knowledge to your clinical decision-making: evidence from well-designed cohort studies on therapy and prevention outcomes should influence your case management more than anecdotal case reports.
Key Findings
- •Epidemiological studies are categorized as observational (descriptive or analytical) or experimental designs, each serving distinct investigative purposes.
- •Cohort, case-control, cross-sectional, and case series studies are the most frequently employed observational designs in equine health research.
- •Patient-centered observational epidemiological studies provide the best evidence for clinical practice in equine veterinary medicine.
- •Familiarity with study design principles is imperative for equine veterinarians to appropriately interpret epidemiological findings.