Patterns of Adult Food Allergy (PAFA-Stage 1)

Patterns and prevalence of adult food allergy in a UK population (PAFA-Stage 1)

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN72819770

Enrollment

10000

Registered

2019-08-08

Start date

2019-08-30

Completion date

Unknown

Last updated

2019-09-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Adult food allergy Injury, Occupational Diseases, Poisoning

Interventions

Community Survey (Questionnaire 1A) Adults aged 18-70 years old living in Greater Manchester, Isle of Wight and Southampton will be invited by their local GP to take part in a short qu

online using a unique link associated with a unique identification number (UID) provided to the participant, by completing the paper questionnaire and posting it back to their local study centre (Manc

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Community survey 1.1. Must be aged between 18 and 70 years old 1.2. Registered with GP practice in Greater Manchester, Southampton, or Isle of Wight 2. Population cohorts 2.1. Participant in one of the Isle of Wight FAIR food allergy cohorts

Exclusion criteria

Exclusion criteria: Does not meet inclusion criteria

Design outcomes

Primary

Measure	Time frame
The estimated prevalence of self-reported adverse reactions to foods in UK adults measured using a community–based survey in the Greater Manchester area, Southampton and Isle of Wight and follow-up of a population-based cohort, FAIR. Participants will be invited to respond to the questionnaire in one of three ways; by post (paper), telephone, or online. Survey completed at a single timepoint. The community-based survey will cover the following variables to describe demographics using simple descriptive statistics: 1. Age (18-29 years, 30-39 years, 40-49 years, 50-59 years, 60-69 years) 2. Gender (male, female, transgender, prefer to self-describe, prefer not to say) 3. Ethnicity (options under the categories: White/Caucasian, mixed/multiple ethnic groups, Asian/Asian British, Black/African/Caribbean/Black British, Other ethnic group) 4. Centre (Manchester, Southampton, Isle of Wight) The community-based survey will cover the following variables to estimate the prevalence of self-reported adverse reactions to foods: 1. Presence of symptoms associated with IgE and non-IgE mediated adverse reactions to food(s) (symptoms: Itching, tingling or swelling in the mouth, lips or throat, a rash, nettle sting like rash or itchy skin, diarrhoea or vomiting (other than food poisoning), stomach cramps, other digestive problems, a runny or stuffy nose, red, sore or running eyes, difficulty swallowing, breathlessness, stiffness in your joints, fainting or dizziness, headaches) 2. Timing with regards to onset of adverse reactions to foods following consumption (0-2 hours, 2-4 hours, 4-12 hours, >12 hours) 3. How often they have experienced symptoms (Only once, 2-4 times, more than 4 times) 4. Food(s) towards which reactions are experienced (select options from list of 41 foods or answer alternative food in free text).	—

Measure

Time frame

The estimated prevalence of self-reported adverse reactions to foods in UK adults measured using a community–based survey in the Greater Manchester area, Southampton and Isle of Wight and follow-up of a population-based cohort, FAIR. Participants will be invited to respond to the questionnaire in one of three ways; by post (paper), telephone, or online. Survey completed at a single timepoint. The community-based survey will cover the following variables to describe demographics using simple descriptive statistics: 1. Age (18-29 years, 30-39 years, 40-49 years, 50-59 years, 60-69 years) 2. Gender (male, female, transgender, prefer to self-describe, prefer not to say) 3. Ethnicity (options under the categories: White/Caucasian, mixed/multiple ethnic groups, Asian/Asian British, Black/African/Caribbean/Black British, Other ethnic group) 4. Centre (Manchester, Southampton, Isle of Wight) The community-based survey will cover the following variables to estimate the prevalence of self-reported adverse reactions to foods: 1. Presence of symptoms associated with IgE and non-IgE mediated adverse reactions to food(s) (symptoms: Itching, tingling or swelling in the mouth, lips or throat, a rash, nettle sting like rash or itchy skin, diarrhoea or vomiting (other than food poisoning), stomach cramps, other digestive problems, a runny or stuffy nose, red, sore or running eyes, difficulty swallowing, breathlessness, stiffness in your joints, fainting or dizziness, headaches) 2. Timing with regards to onset of adverse reactions to foods following consumption (0-2 hours, 2-4 hours, 4-12 hours, >12 hours) 3. How often they have experienced symptoms (Only once, 2-4 times, more than 4 times) 4. Food(s) towards which reactions are experienced (select options from list of 41 foods or answer alternative food in free text).

—

Secondary

Measure	Time frame
There are no secondary outcome measures	—

Countries

United Kingdom

Contacts

Public ContactElaine Gauson

elaine.gauson@manchester.ac.uk+44 (0)161 3065 795

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026