Development of a food allergy education resource for primary care physicians
© Yu et al; licensee BioMed Central Ltd. 2008
Received: 16 June 2008
Accepted: 30 September 2008
Published: 30 September 2008
Food allergy is estimated to affect 3–4% of adults in the US, but there are limited educational resources for primary care physicians. The goal of this study was to develop and pilot a food allergy educational resource based upon a needs survey of non-allergist healthcare providers.
A survey was undertaken to identify educational needs and preferences for providers, with a focus on physicians caring for adults and teenagers, including emergency medicine providers. The results of the survey were used to develop a teaching program that was subsequently piloted on primary care and emergency medicine physicians. Knowledge base tests and satisfaction surveys were administered to determine the effectiveness of the educational program.
Eighty-two physicians (response rate, 65%) completed the needs assessment survey. Areas of deficiency and educational needs identified included: identification of potentially life-threatening food allergies, food allergy diagnosis, and education of patients about treatment (food avoidance and epinephrine use). Small group, on-site training was the most requested mode of education. A slide set and narrative were developed to address the identified needs. Twenty-six separately enrolled participants were administered the teaching set. Pre-post knowledge base scores increased from a mean of 38% correct to 64% correct (p < 0.001). Ability to correctly demonstrate the use of epinephrine self injectors increased significantly. Nearly all participants (>95%) indicated that the teaching module increased their comfort with recognition and management of food allergy.
Our pilot food allergy program, developed based upon needs assessments, showed strong participant satisfaction and educational value.
It is estimated that 3–4% of adults have food allergy, and that 20% of adults avoid a food based upon a perceived allergy [1, 2]. Teenagers and young adults appear to be at highest risk for fatal food allergies [3, 4]. Food allergy is apparently increasing, at least for allergy to peanuts [5, 6]. Primary care and emergency medicine healthcare providers are called upon to diagnose and treat these patients, but previous studies indicate a significant deficit in appropriate diagnosis and treatment. A national survey of pediatricians identified knowledge base deficits where nearly half of the respondents did not properly recognize and treat food-induced anaphylaxis . A study by Wang et al. similarly identified that half of the respondents failed to treat a hypothetical case of anaphylaxis with the appropriate dose of epinephrine, and more than a third of respondents selected an inadequate observation period following a reaction . In addition, a majority of respondents were unable to identify risk factors for anaphylaxis. A study on the ability of pediatricians to correctly demonstrate epinephrine self-injector use revealed that the majority of pediatricians were not able to correctly use the epinephrine devices . Finally, a study across 21 emergency rooms revealed deficits in treatment of persons with food allergy including failure to provide referral, training on avoidance, and treatment in the emergency department .
In an effort to improve management of food allergy and anaphylaxis by non-allergist healthcare providers, we sought to identify the educational needs of these stakeholders and create teaching materials to effectively address these needs. We focused upon primary care and emergency medicine physicians likely to care for those at highest risk for fatal anaphylaxis (teenagers and young adults). We created and administered a needs assessment survey and used those results to form an educational program that was further piloted to determine efficacy and satisfaction.
Needs assessment survey
The investigators created a 23-item, structured, written questionnaire (refined by administration to and feedback from 3 allergists and 3 primary care physicians) that collected information on physician demographics, practice type, prior exposure to food allergy education, and self-reported knowledge of food allergy and anaphylaxis management. Individual feedback regarding specific educational needs in the area of food allergy and learning style preferences was also obtained.
A convenience sample of physicians with different specialties was obtained by distributing surveys in person during departmental grand rounds and staff meetings, and by interoffice mail (in the case of emergency medicine physicians in New York). Responses were collected anonymously. All studies were approved by the Institutional Review Board at Mount Sinai and University of California, Davis.
Educational program design and testing
Based upon the indicated learning preferences, educational material comprised of a PowerPoint slide set and narrative and a self-injectable epinephrine demonstration was developed and written by board-certified allergists specializing in food allergy [SS, ST] for a target audience of non-allergist healthcare providers. The slide set and self-injectable epinephrine demonstration are provided in Additional data file 1. The pre-scripted didactic-style presentation was based on guidelines for anaphylaxis and food allergy established by the American Academy of Asthma, Allergy and Immunology and included a comprehensive review of clinical food allergy with an emphasis on previously identified knowledge deficits and needs [11–14]. A live demonstration of how to utilize the self-injectable epinephrine devices, Epipen® (Dey, Napa, CA) and Twinject® (Verus, San Diego, CA), according to the manufacturers' guidelines was integrated into the discussion on anaphylaxis treatment. The slide set concluded with a number of interactive clinical case scenarios which highlighted the main concepts. The information was presented in an hour-long session with individual participants, who were administered a written knowledge pretest and post-test and were graded on their use of epinephrine self-injectors pre- and post-presentation. These participants were solicited primarily in person as a convenience sample from various clinical settings to obtain representation from several specialties. These participants were paid 100 US dollars to compensate for their time. The written test, which consisted of 10 single-best-answer, multiple-choice questions, was reviewed by healthcare providers caring for food allergy patients and non-allergist primary care physicians and revised to optimize question clarity and establish an appropriate difficulty level. A satisfaction survey (5 point Likert scale) was administered after the presentation. The steps in administering the Epipen® autoinjector were scored in the order of use according to the instructions supplied by the manufacturer: 1) recognizing the device; 2) removing the cap; 3) selecting the appropriate body site; 4) pressing the correct end of the device to the body; 5) pressing to activate; 6) holding in place for several seconds. The steps in administering the two consecutive doses of the Twinject® autoinjector were also scored in the order of use according to the instruction supplied by the manufacturer. The steps scored for the first injection were as follows: 1) recognizing the device; 2) removing the cap; 3) selecting the appropriate body site; 4) pressing the correct end of the device to the body; 5) pressing to activate; 6) holding in place for several seconds. The steps scored for the second injection were as follows: 1) opening the device for the inner syringe; 2) removing the safety ring; 3) injecting into the appropriate body site.
Statistical analysis was performed using GraphPad Prism 4.0 software (San Diego, CA). Descriptive statistics are presented. Categorical variables were evaluated by the χ2 test; test scores and epinephrine demonstration skill scores were analyzed using the Wilcoxon signed rank test. A p <0.05 was considered statistically significant.
Demographics of physicians surveyed in needs assessment
# of Respondents
% of Respondents
Number of Patients with Acute Food Allergy Seen Annually
Number of Patients with History of Food Allergy Seen Annually
Specialty Board Certification
Other Primary Care (i.e. adolescent health, pediatric emergency medicine,
nurse practitioner, physician assistant)
Included components in an emergency food allergy management plan
Component Included in Emergency Food Allergy Management Plan
# of Respondents
% of Respondents
Prescription of epinephrine auto-injector
Dietary avoidance advice
Other treatment advice
Referral to allergist
Prescription of oral antihistamine
Recommending medic-alert bracelet
Prescription of oral corticosteroid
Referral to online resources/information
Education on signs and symptoms
Prescription of albuterol metered-dose inhaler
Physicians were then presented with two clinical scenarios involving a tree nut-allergic patient to determine whether their management plan varied based on a history of facial angioedema and either severe or mild wheezing with a prior accidental ingestion. Almost all the respondents (93%) stated that they would advise the patient with a history of severe wheezing to administer self-injectable epinephrine at the onset of a current allergic reaction, whereas 61% of physicians recommended self-injectable epinephrine to the tree-nut allergic patient with a history of mild wheezing.
Reasons cited by physicians for initiating an allergy referral
Indications Cited for Physician Referral to Allergist According to Accepted Guidelines 
# of Respondents
% of Respondents
Have experienced allergic symptoms (hypotension, urticaria, angioedema, itch, wheezing, gastrointestinal responses) with food exposure
Limited diet based on perceived adverse reactions to foods
Have a diagnosed food allergy
Have experienced itchy mouth from raw fruit/vegetables
Educational preferences indicated by needs assessment survey
# of Respondents
% of Respondents
Topic needing more information
Providing emergency food allergy action plan
Educating patients on food allergen avoidance
Use and indications of self-injectable epinephrine
Office management of anaphylaxis
Learning style preferences
Smaller on-site training session
Review article in major journal every 2 years
Self-paced online training modules
Sessions at large annual professional conference
Self-paced CD computer training modules
Self-paced printed training modules
Pilot testing of teaching materials
Most of the participants (81%) indicated that they did not have available epinephrine device trainers at their clinical practice location. Pre-demonstration, 23% of participants were able to demonstrate correct use of the Epipen® device with 85% correctly administering it after the demonstration. One participant recognized the relatively new Twinject® device before the trainer demonstration, but the majority of participants were able to administer the first dose (81%) and the second dose (81%) correctly afterwards at the end of the session.
Nearly all the primary care and emergency medicine healthcare providers we surveyed treat patients with food allergies. A large number of these healthcare providers received most of their prior training in food allergy through their own personal clinical experience rather than through structured educational programs. Even though many of the participants indicated that they relied on this experience for clinical decision making, most reported being less than comfortable managing food allergy. Physician management plans for life-threatening food allergy were deficient in regards to multiple areas, especially: prescription of self-injectable epinephrine (23% did not include this in a management plan), dietary advice (61% provide none) and referral to an allergist (28% indicated that they "never", "rarely" or only "sometimes" refer). Furthermore, many participants specifically distinguished between mild and severe wheezing as a criterion for prescribing self-injectable epinephrine even though any severity of wheezing in a past reaction is considered a current risk for a severe reaction. Most physicians did not employ educational handouts regarding epinephrine use, and a large number of offices lacked training devices. In addition, there was considerable variation in patient selection and consideration of clinical criteria for initiating an allergy referral, which may pose a barrier for a timely referral to specialist care.
Although many physicians indicated being at least somewhat comfortable with the diagnosis and management of food allergy, there were discrepancies between their reported comfort level and knowledge test scores and self-injectable epinephrine device demonstrations. Nearly two thirds of participants felt comfortable with teaching the epinephrine self-injector technique, but only 23% of the pilot program participants could properly demonstrate Epipen® use before taking the educational module.
We found that there is suboptimal comfort with diagnosis and management of food allergy among primary care and emergency physicians, and many providers indicated a clear interest in further education, particularly regarding referral guidelines, diagnosis, and patient education. Our study showed that most healthcare providers currently utilize many different reference sources for information on the management of food allergies, including other colleagues and medical textbooks. In particular, healthcare providers most frequently turned to the internet for information, which reflects the current trend of increased reliance on the internet as an educational resource for physicians.
Improving healthcare provider education and better delivery of that education via currently employed forms of learning would certainly improve the continuity and quality of care of food allergy patients. However, there are currently limited formal food allergy educational programs designed for and easily accessible by primary care physicians. Our survey results revealed that the preferred methods of education were small conferences, printed materials, and online training. To address these varied learning styles, we selected a PowerPoint slide format as this could be ultimately adapted to either a small conference, individualized instruction, or an online tutorial setting.
Our study demonstrated that this program was beneficial to increasing physician knowledge in food allergy as evidenced by the improvement in test scores and use of self-injectable epinephrine devices. Most participants indicated that the teaching module was presented in an effective format, addressed their educational needs, and increased their knowledge regarding the management of food allergy and anaphylaxis. Also, many respondents (96%) would recommend a similar educational program to their colleagues.
We have presented primarily a descriptive study with several limitations including a small sample size and the recruitment of participants at only two locations at academic centers. Having two study sites could reduce the generalizability of our findings. However, we were successful in surveying physicians of various specialties who practice in a variety of settings. The small size affects the statistical strength of our study, but our data provides compelling observations about food allergy management in primary care. The response rate was generally high among certain venues (staff meetings) while lower when surveys were performed during conferences or sent by interoffice mail. It is difficult to know if physicians with a stronger interest and knowledge in the topic or if physicians with a poor knowledge base seeking additional education were more prone to participate. Nonetheless, overall participation was quite high for the needs assessment (65%) and pilot testing (35%). Additional validation of this program could include administration in other locations and practice environments and to a larger group of physicians and other healthcare providers, such as nurse practitioners and physician assistants. Longitudinal validation is also needed.
Based on the study feedback, we have implemented several modifications in the original slide set and devised a listing of the various relevant websites to accompany the core components of the program. We have also incorporated videos reviewing the use of Epipen® and Twinject® into the PowerPoint module which could be replayed as needed until sufficient mastery of these skills are attained.
In conclusion, we have developed a flexible educational program that can be an effective teaching tool for primary care and emergency medicine providers for food allergy diagnosis and management. Further testing and validation of this training module will help to maintain its educational value and relevance.
Funding was provided by the United States Department of Agriculture (USDA), CSREES Food Safety Grant #51110-01728. The USDA had no part in the study design, data collection and analysis, data interpretation, writing, or submission of this work. This study does not necessarily represent the policy of the USDA, and readers should not assume endorsement by the federal government.
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