Prevalence of allergic rhinitis and atopic dermatitis among children in four regions of Finland

Remes, ST; Korppi, Matti; Kajosaari, Merja; Koivikko, A.; Soininen, Leena; Pekkanen, Juha

doi:10.1111/j.1398-9995.1998.tb03954.x

Cited by 64 publications

(67 citation statements)

References 37 publications

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“…17,18 We observed a predominance of females among the children with rhinitis, which is in agreement with other publications. 19,20 The seasonal variation of allergic rhinitis with increased prevalence during the winter has also been reported. 21,22 The high prevalence of rhinitis among children with ocular symptoms confirms the intimate relationship between rhinitis and allergic conjunctivitis.…”

Section: Resultsmentioning

confidence: 99%

Prevalência de rinite alérgica em adolescentes do Distrito Federal: comparação entre as fases I e III do ISAAC

Borges¹,

Burns²,

Felizola³

et al. 2006

J. Pediatr. (Rio J.)

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Objectives: To determine the prevalence of allergic rhinitis in a random group of schoolchildren aged 13 to 14 years in Brasilia, Brazil, to evaluate tendencies over 6 years and to compare prevalence rates among different socioeconomic groups. Methods:Two cross-sectional studies were undertaken 6 years apart, using the ISAAC (phases I and III) written questionnaire. Thirty-nine schools were chosen at random from eight administrative regions in Brasilia, and were classified into three groups according to the socioeconomic conditions of the population.Results: A total of 3,009 questionnaires were collected. Of these 53.5% related to female children and 80% to students from public schools. Prevalence rates for diagnosed rhinitis, recent rhinitis and allergic rhinitis were 20, 29.3 and 12.2%, respectively. Rhinitis was more prevalent in private schools than in public ones (17.8 versus 14.1%) and sufferers were predominantly female. Prevalence rates were also higher among populations with higher socioeconomic status (23.5 versus 12.2%). Comparison with the 1996 data revealed significant increases in the prevalence of diagnosed rhinitis (12.7 versus 20%, p = 0.001). These increases were observed at all socioeconomic levels. Conclusion:A large number of 13 and 14-year-old children resident in the Distrito Federal exhibit symptoms indicative of rhinitis and the majority of them have allergic rhinitis.Over a six-year period the prevalence of allergic rhinitis increased significantly, predominantly affecting females and with greater prevalence among students at private school and from families with higher socioeconomic status.J Pediatr (Rio J). 2006;82(2):137-43: Perennial allergic rhinitis, prevalence, adolescent, analysis socioeconomic.

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Section: Resultsmentioning

confidence: 99%

Prevalência de rinite alérgica em adolescentes do Distrito Federal: comparação entre as fases I e III do ISAAC

Borges¹,

Burns²,

Felizola³

et al. 2006

J. Pediatr. (Rio J.)

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“…These rather rigorous criteria attempted to exclude false-negative symptom histories and false-positive SPT reactions, as it is well known that symptom severity, duration and medication use is inaccurate when recollected weeks or months later. This might be caused by confusion with intervening symptoms, the impact of drugs, recalling overall perceived health rather than target organ symptoms, or the health status on certain days in the past rather than in the entire season [15,28,29,30,31,32]. Secondly, all our participants were exposed to relevant allergen levels: all were natives to Denmark, living in the same area, and thus, exposed to at least average or high pollen levels in at least 1 season, and had daily outdoor living.…”

Section: Discussionmentioning

confidence: 99%

A Prospective, Clinical Study on Asymptomatic Sensitisation and Development of Allergic Rhinitis: High Negative Predictive Value of Allergological Testing

Bødtger¹,

Assing²,

Poulsen³

2011

Int Arch Allergy Immunol

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Background: Asymptomatic aeroallergen sensitisation affects approximately 10% of Western adolescents and is an established risk factor for the development of respiratory allergy. The reported incidence is 2–20% annually. Previous studies are based on out-seasonal symptom recollection or selected populations, conferring bias towards higher incidence rates. Objective: The aim was to determine the incidence of onset of symptoms among clinically well-characterised asymptomatic, sensitised subjects compared with controls, and to evaluate the predictive values of common allergological tests. Methods: We performed a prospective, clinical, non-interventional, 2-year follow-up study on subjects (identified by population screening) with seasonal allergic birch or grass pollen rhinitis (n = 52), asymptomatic sensitisation to grass or birch (AS, n = 52) or non-atopic, healthy control subjects (n = 39). Experimental allergen susceptibility was assessed at inclusion and at follow-up by skin prick test, conjunctival challenge, intradermal late-phase reaction and measurement of specific IgE. Participants completed in-seasonal symptom and medication diaries during 2 subsequent seasons. Results: We observed an annual incidence rate of 5% for the onset of symptoms in the AS group (healthy control group 0%). At baseline, the AS group displayed intermediate experimental allergen susceptibility. Subjects developing symptoms had higher levels of specific IgE and larger late-phase reaction than those persistently asymptomatic. However, the positive predictive values were low (14–27%) in contrast to the negative predictive values (95–100%). Conclusion: In a well-characterised young population, asymptomatic aeroallergen sensitisation conferred a low risk for onset of symptoms during the 2-year follow-up. Persistent asymptomatic phenotype could be accurately predicted by negative results from simple allergological testing.

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“…The current prevalence of allergic rhinitis among the Finnish population is estimated as 15-25% (Rimpelä et al 1995;Remes et al 1998;Huurre et al 2004). Birch (Betula) pollen is regarded as a major cause of seasonal allergic reactions in Finland and other Scandinavian countries (D'Amato et al 1998;Rasmussen 2002;Moverare et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Indoor and outdoor pollen concentrations in private and public spaces during the Betula pollen season

Hugg

Rantio-Lehtimäki

2007

Aerobiologia

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Although the number of studies of pollen concentrations inside and outside buildings is increasing, little is known about the efficiency of penetration of pollen from outdoor to indoor air, and further. We studied indoor and outdoor pollen concentrations in the town of Lappeenranta and in the municipality of Rautjärvi in SE Finland from May 3-23, 2004, i.e. throughout the Betula pollen season, and assessed the risk of exposure to pollen grains. Pollen concentrations were measured inside and outside a block of flats, a detached house, and the regional central hospital, using rotorod-type samplers; in the town of Joutseno data were compared with Burkard counts. Outdoor concentrations of Betula pollen grains ranged between low and abundant (0-855 grains m À3 ). The corresponding indoor concentrations near the main front doors varied from low to moderate (0-17 grains m À3 ) in the central hospital and were low (<10 grains m À3 ) in both residential buildings. Indoor concentrations further from the main front door were low (<10 grains m À3 ) at all study sites. The concentrations of Betula pollen decreased substantially from outdoors to indoors, and further toward the centre of the building, probably indicating relatively poor penetrating properties of the pollen grains and/or the short-lived presence of pollen grains in indoor air. The concentrations of Betula pollen inside the buildings during the peak flowering period were mostly at a level barely inducing reactions even in the most sensitive persons.

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Prevalence of allergic rhinitis and atopic dermatitis among children in four regions of Finland

Cited by 64 publications

References 37 publications

Prevalência de rinite alérgica em adolescentes do Distrito Federal: comparação entre as fases I e III do ISAAC

Prevalência de rinite alérgica em adolescentes do Distrito Federal: comparação entre as fases I e III do ISAAC

A Prospective, Clinical Study on Asymptomatic Sensitisation and Development of Allergic Rhinitis: High Negative Predictive Value of Allergological Testing

Indoor and outdoor pollen concentrations in private and public spaces during the Betula pollen season

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