P. Kauppi et al., VERIFICATION OF SELF-REPORTED ASTHMA AND ALLERGY IN SUBJECTS AND THEIR FAMILY MEMBERS VOLUNTEERING FOR GENE-MAPPING STUDIES, Respiratory medicine, 92(11), 1998, pp. 1281-1288
Citations number
32
Categorie Soggetti
Respiratory System","Cardiac & Cardiovascular System
Studies which aim at mapping genes contributing to the development of
asthma and atopy demand that hundreds of patients and their family mem
bers be assessed. In Finland, the Social Insurance Institution (SII) g
rants substantial reimbursement for medication to all patients who mee
t diagnostic criteria of asthma, which include a history of asthmatic
symptoms and a measured reversibility of bronchial obstruction. To rec
ruit a large number of asthma patients efficiently in a short period o
f time, we took advantage of the national reimbursement procedure and
retrospectively collective data on patients' medical history and lung
function test results at the time of diagnosis. First, we wanted to in
vestigate if the reimbursements could be regarded as objective verific
ation for self-reported asthma. Altogether 335 adult self-reported ast
hma patients were evaluated, 87% of them were verified as having chron
ic asthma. Reimbursement for medication showed a sensitivity of 95% an
d a specificity of 76% for verified asthma. Second, we were interested
to see if self-reported nasal allergic symptoms or self-reported phys
ician diagnosed allergic rhinitis were sensitive and specific measures
of allergy. The self-reported allergic nasal symptoms had a poor spec
ificity (31% in the proband group and 59% in the family members group)
when compared to the allergy screening test (Phadiatop(R)). The best
verification for self-reported asthma was achieved by combining the in
formation on self-reported disease, granted reimbursement by the SII a
nd the medical records. For allergies, the specificity of self-reporti
ng was far too low to be used alone, and a positive allergy screening
test together with relevant symptoms was chosen as a marker of allergy
.