Abstract
Clinical studies to prevent the development of food allergy have recently helped reshape public policy recommendations on the early introduction of allergenic foods. These trials are also prompting new research, and it is therefore important to address the unique design and analysis challenges of prevention trials. We highlight statistical concepts and give recommendations that clinical researchers may wish to adopt when designing future study protocols and analysis plans for prevention studies. Topics include selecting a study sample, addressing internal and external validity, improving statistical power, choosing alpha and beta, analysis innovations to address dilution effects, and analysis methods to deal with poor compliance, dropout, and missing data.
Original language | English |
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Pages (from-to) | 274-282 |
Number of pages | 9 |
Journal | The Journal of Allergy and Clinical Immunology: In Practice |
Volume | 5 |
Issue number | 2 |
Early online date | 7 Mar 2017 |
DOIs | |
Publication status | E-pub ahead of print - 7 Mar 2017 |
Keywords
- Prevention studies
- Food allergy
- Statistical considerations
- Complier average causal effect
- LEAP
- EAT
- Dilution effects
- Dropout
- Imputation
- Missing data
- Tipping point analysis
- Type I error
- Type II error