Adverse reactions to foods and food allergy: development and reproducibility of a questionnaire for clinical diagnosis.

Objective. To develop a questionnaire as a screening tool for adverse reactions to foods in children and to assess the technical reproducibility by test-retest. Methods. Reproducibility of the questionnaire was performed by the literature review, preparing the preliminary questionnaire, peer review, pretest, and retest analysis. The study of the test-retest reproducibility was cross-sectional and descriptive. Kappa coefficient was used to study the reproducibility of the questionnaire. The sample consisted of 125 2-4 year-old children from 15 daycare centers in Recife, Brazil, and interviews with parents or caregivers were used to collect data. Results. From the total children, sixty-three were boys (50.4%), forty-six were two years old (36.8%), forty-seven were three years old (37.6%), and thirty-two were four years old (25.6%). Forty caregivers reported that their child had health problems with food. Most frequently reported offending foods were milk, peanuts, shrimp, and chocolate. Nine questions showed a good Kappa index (≥0,6). Conclusions. The questionnaire used needs to be resized and reshaped on the basis of the issues with good internal consistency and reproducibility. The use of a validated and reproducible questionnaire in the children represents an important contribution towards assessing an eventual rise in overt food allergy.

The association of rhinoconjunctivitis and asthma symptoms in adolescents.

AIM: Our study aimed to determine the rate of association of rhinoconjunctivitis and asthma symptoms in adolescents to analyse whether asthma symptoms are more severe and frequent in asthmatics with concomitant allergic rhinitis and assess if adolescents are aware of having rhinoconjunctivitis. METHODS: A cross-sectional study, with two components: a study in prevalence and an inter-case study (rhinitis symptoms) with a comparison group (no rhinitis symptoms), based on information from questionnaires applied in phase 3 of ISAAC in Recife in 2002. RESULTS: Associated rhinoconjunctivitis and probable asthma symptoms were observed in 5.1% of adolescents (48/940; CI 95%: 3.8 %-6.6%), probable asthma alone in 10.9% (103/940; CI 95%: 9.1%- 13.1%) and rhinoconjunctivitis alone in 9.7% (91/940; CI 95%: 7.9%-13%). Among the rhinitis-bearing adolescents, almost 81.3% (39/48) had persistent probable asthma and 31.8% (48/151) of asthmatic patients rhinoconjunctivitis. 65.1% (86/132) of adolescents with diagnosed rhinitis were unaware of rhinitis symptoms. CONCLUSIONS: The association of rhinoconjunctivitis and asthma symptoms is frequent and associated to more severe asthma symptoms. Adolescents' unawareness of rhinitis symptoms reflects the underdiagnosis that can result in down-playing the symptoms, and the consequent undertreatment.