Agreement between asthma questionnaire and health care register data

Hedman, Anna M.; Gong, Tong; Lundholm, Cecilia; Dahlén, Elin; Ullemar, Vilhelmina; Brew, Bronwyn K.; Almqvist, Catarina

doi:10.1002/pds.4566

Cited by 7 publications

(8 citation statements)

References 32 publications

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“…The good agreement that we found between our questionnaire‐based data and the asthma drug register data suggests that our questionnaire data were reliable when it came to estimating asthma prevalence and asthma medication 11 . Results from previous studies support this conclusion 1,2,3 . Based on our results, we can argue that parental reports of asthma medication and diagnosis have high validity with regard to agreement with register‐based dispensed asthma medication.…”

Section: Discussionsupporting

confidence: 82%

Parental questionnaires provided reliable data on childhood asthma compared with national registers

Célind

Vasileiadou

Goksör

2020

Pediatric Allergy Immunology

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Background Much of our knowledge of childhood asthma comes from questionnaire‐based studies. Our main aim was to assess the agreement between parental‐reported data at 12 years of age and data from two national Swedish registers. Methods Data were obtained from the prospective, longitudinal, population‐based Children of Western Sweden cohort, which focused on children born in 2003. The parents answered questionnaires at six months and one, four, eight and 12 years of age. Personal identity numbers linked 3634 children to the Swedish Prescribed Drug Register (SPDR) and the National Patient Register (NPR). Results At 12 years of age, there was substantial overall agreement between the asthma medication reported by the parents in the questionnaire and the SPDR for any asthma medication (94.8%, kappa 0.71) and maintenance treatment (95.3%, kappa 0.68). In contrast, the agreement between the outpatient asthma diagnoses in the NPR and the questionnaire‐based asthma was 30.5% and it was 32.8% between the NPR and the dispensed asthma medication in the SPDR. Hospitalization was rare for obstructive diseases after early childhood, and 38.2% of the 12‐year‐old children only received a short‐acting beta agonist, with no maintenance treatment. Conclusion There was good agreement between the questionnaire‐based data on asthma medication and the national drug register, but the National Patient Register provided incomplete information on asthma diagnoses, probably because it did not include primary care diagnoses. The results show that well‐constructed parental questionnaires can provide reliable data on childhood asthma.

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Section: Discussionsupporting

confidence: 82%

Parental questionnaires provided reliable data on childhood asthma compared with national registers

Célind

Vasileiadou

Goksör

2020

Pediatric Allergy Immunology

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“…Parents/guardians were asked about the child ever having asthma ( parent‐report ever asthma 9‐12 ) and still having asthma ( parent‐report current asthma 9‐12 ). The asthma questions in CATSS have been shown to have good agreement with register‐based definitions …”

Section: Methodsmentioning

confidence: 95%

Academic achievement of adolescents with asthma or atopic disease

Brew

Soderberg

Lundholm

et al. 2019

Clin Experimental Allergy

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SummaryBackgroundOver a fifth of children and adolescents suffer with asthma or atopic disease. It is unclear whether asthma impacts academic performance in children and adolescents, and little is known about the association of eczema, food allergy or hayfever and academic performance.ObjectiveTo examine whether asthma, eczema, food allergy or hayfever impacts on adolescent academic performance and to assess the role of unmeasured confounding.MethodsThis study used the Childhood and Adolescent Twin Study of Sweden cohort born 1992‐1998. At age 9‐12 years, parents reported on their child's ever or current asthma, eczema, food allergy and hayfever status (n = 10 963). At age 15, linked national patient and medication register information was used to create current and ever asthma definitions including severe and uncontrolled asthma for the same children. Academic outcomes in Grade 9 (age 15‐16 years) included: eligibility for high school (Grades 10‐12), and total mark of the best 16 subject units, retrieved from the Grade 9 academic register. Whole cohort analyses adjusted for known covariates were performed, and co‐twin control analyses to assess unmeasured confounders.ResultsThere were no associations found for asthma or food allergy at 9‐12 years and academic outcomes in adolescence. In addition, at age 15, there were no statistically significant associations with current, ever, severe or uncontrolled asthma and academic outcomes. Eczema and hayfever at age 9‐12 years were found to be positively associated with academic outcomes; however, co‐twin control analyses did not support these findings, suggesting the main analyses may be subject to unmeasured confounding.Conclusion and clinical relevanceHaving asthma or an atopic disease during childhood or adolescence does not negatively impact on academic performance. This information can be used by clinicians when talking with children and parents about the implications of living with asthma or atopic disease.

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“…All twins and their parents completed questionnaires. The parental questionnaire, which has previously been validated against health care registers with good agreement, 27 included questions on the parent's lifestyle, background and medical history, followed by a section on each twin's general health status, lifestyle and medical history including current asthma defined as reporting positively to the question 'Does your child have asthma?'. 23…”

Section: Asthmamentioning

confidence: 99%