Occupational asthma Respiratory
Conditions
Interventions
Trial Objectives
1. To determine whether different exposures at work cause different patterns of peak flow response
2. To determine whether exposure to supposed irritants differ from supposed sensiti
Sponsors
University Hospitals Birmingham NHS Foundation Trust
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Records from all workers with possible occupational asthma who have kept frequent measurements of their breathing using peak flow meters over several weeks at work and at home as part of their investigation to confirm their diagnosis and who have at least one positive score for occupational asthma, will be identified from the Oasys database on NHS trust computers (derived from- and part of the electronic patient record) from 1990 to the present day
Exclusion criteria
Exclusion criteria: 1. Patients for whom PEF records were inadequate for analysis (eg. too few readings, insufficient number of days at work) 2. Records of patients whose occupational exposures are unknown
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The ABC score from the Oasys program for the PEF study measured using patient records | — |
Secondary
| Measure | Time frame |
|---|---|
| Measured using patient records at a single time point: 1. Differences in the pattern of reaction (immediate, flat, late) 2. Recovery time (1,2, >2 days) 3. Diurnal variation in PEF home vs work 4. Sensitivity and specificity of questionnaire responses (for the questionnaire analysis) | — |
Countries
England, United Kingdom
Outcome results
None listed