• 1
    Nga NN, Chai SK, Bihn TT, Redding G, Takaro T, Checkoway H et al. ISAAC-based asthma and atopic symptoms among Ha Noi school children. Pediatr Allergy Immunol 2003;14: 272279.
  • 2
    Robertson CF, Roberts MF, Kappers JH. Asthma prevalence in Melbourne schoolchildren: have we reached the peak? Med J Aust 2004;180: 273276.
  • 3
    Toelle BG, Ng K, Belousova E, Salome CM, Peat JK, Marks GB. Prevalence of asthma and allergy in schoolchildren in Belmont, Australia: three cross-sectional surveys over 20 years. BMJ 2004;328: 386387.
  • 4
    Selnes A, Bolle R, Holt J, Lund E. Cumulative incidence of asthma and allergy in north-Norwegian schoolchildren in 1985 and 1995. Pediatr Allergy Immunol 2002;13: 5863.
  • 5
    Selnes A, Bolle R, Holt J, Lund E. Atopic diseases in Sami and Norse schoolchildren living in northern Norway. Pediatr Allergy Immunol 1999;10: 216220.
  • 6
    Selnes A, Odland JO, Bolle R, Holt J, Dotterud LK, Lund E. Asthma and allergy in Russian and Norwegian schoolchildren: results from two questionnaire-based studies in the Kola Peninsula, Russia, and northern Norway. Allergy 2001; 56:344348.
  • 7
    Steen-Johnsen J, Bolle R, Holt J, Benan K, Magnus P. Impact of pollution and place of residence on atopic diseases among schoolchildren in Telemark County, Norway. Pediatr Allergy Immunol 1995;6: 192199.
  • 8
    Asher MI, Keil U, Anderson HR, Beasley R, Crane J, Martinez F et al. International Study of Asthma and Allergies in Childhood (ISAAC): rationale and methods. Eur Respir J 1995;8: 483491.
  • 9
    Worldwide variations in the prevalence of asthma symptoms: the International Study of Asthma and Allergies in Childhood (ISAAC) Eur Respir J 1998;12: 315335.
  • 10
    Asher MI, Weiland SK. The International Study of Asthma and Allergies in Childhood (ISAAC). ISAAC Steering Committee. Clin Exp Allergy 1998;28(Suppl. 5):5266.
  • 11
    Strachan D, Sibbald B, Weiland S, Ait-Khaled N, Anabwani G, Anderson HR et al. Worldwide variations in prevalence of symptoms of allergic rhinoconjunctivitis in children: the International Study of Asthma and Allergies in Childhood (ISAAC). Pediatr Allergy Immunol 1997;8: 161176.
  • 12
    Worldwide variation in prevalence of symptoms of asthma, allergic rhinoconjunctivitis, and atopic eczema: ISAAC. The International Study of Asthma and Allergies in Childhood (ISAAC) Steering Committee. Lancet 1998;351: 12251232.
  • 13
    SAS INSTITUTE. SAS/STAT guide for personal computers. Cary, NC (USA): SAS Institute, 1992.
  • 14
    Masoli M, Fabian D, Holt S, Beasley R. The global burden of asthma: executive summary of the GINA Dissemination Committee report. Allergy 2004;59: 469478.
  • 15
    Leung DY, Bieber T. Atopic dermatitis. Lancet 2003;361: 151160.
  • 16
    Nystad W, Magnus P, Gulsvik A, Skarpaas IJ, Carlsen KH. Changing prevalence of asthma in school children: evidence for diagnostic changes in asthma in two surveys 13 yrs apart. Eur Respir J 1997;10: 10461051.
  • 17
    Braback L, Appelberg J, Jansson U, Kalvesten L. Changes in prevalence and severity of asthma among schoolchildren in a Swedish district between 1985 and 1995. Acta Paediatr 2000;89: 465470.
  • 18
    Ulrik CS, von Linstow ML, Backer V. Prevalence and predictors of rhinitis in Danish children and adolescents. Allergy 2000;55: 10191024.
  • 19
    Forsberg B, Pekkanen J, Clench-Aas J, Martensson MB, Stjernberg N, Bartonova A et al. Childhood asthma in four regions in Scandinavia: risk factors and avoidance effects. Int J Epidemiol 1997;26: 610619.
  • 20
    Nystad W, Magnus P, Roksund O, Svidal B, Hetlevik O. The prevalence of respiratory symptoms and asthma among school children in three different areas of Norway. Pediatr Allergy Immunol 1997;8: 3540.
  • 21
    Bjorksten B, Dumitrascu D, Foucard T, Khetsuriani N, Khaitov R, Leja M et al. Prevalence of childhood asthma, rhinitis and eczema in Scandinavia and Eastern Europe. Eur Respir J 1998;12: 432437.
  • 22
    Mortz CG, Lauritsen JM, Bindslev-Jensen C, Andersen KE. Prevalence of atopic dermatitis, asthma, allergic rhinitis, and hand and contact dermatitis in adolescents. The Odense Adolescence Cohort Study on Atopic Diseases and Dermatitis. Br J Dermatol 2001;144: 523532.
  • 23
    Lindbaek M, Wefring KW, Grangard EH, Ovsthus K. Socioeconomical conditions as risk factors for bronchial asthma in children aged 4–5 yrs. Eur Respir J 2003;21: 105108.
  • 24
    Ronmark E, Perzanowski M, Platts-Mills T, Lundback B. Incidence rates and risk factors for asthma among school children: a 2-year follow-up report from the obstructive lung disease in Northern Sweden (OLIN) studies. Respir Med 2002;96: 10061013.
  • 25
    Ronmark E, Perzanowski M, Platts-Mills T, Lundback B. Different sensitization profile for asthma, rhinitis, and eczema among 7–8-year-old children: report from the Obstructive Lung Disease in Northern Sweden studies. Pediatr Allergy Immunol 2003;14: 9199.
  • 26
    Kalyoncu AF, Selcuk ZT, Enunlu T, Demir AU, Coplu L, Sahin AA et al. Prevalence of asthma and allergic diseases in primary school children in Ankara, Turkey: two cross-sectional studies, five years apart. Pediatr Allergy Immunol 1999;10: 261265.
  • 27
    Lee SL, Wong W, Lau YL. Increasing prevalence of allergic rhinitis but not asthma among children in Hong Kong from 1995 to 2001 (Phase 3 International Study of Asthma and Allergies in Childhood). Pediatr Allergy Immunol 2004;15: 7278.
  • 28
    Camelo-Nunes IC, Wandalsen GF, Melo KC, Naspitz CK, Sole D. Prevalence of atopic eczema and associated symptoms in school children. J Pediatr (Rio J) 2004;80: 6064.
  • 29
    Wang XS, Tan TN, Shek LP, Chng SY, Hia CP, Ong NB et al. The prevalence of asthma and allergies in Singapore; data from two ISAAC surveys seven years apart. Arch Dis Child 2004;89: 423426.
  • 30
    Sunderland RS, Fleming DM. Continuing decline in acute asthma episodes in the community. Arch Dis Child 2004;89: 282285.
  • 31
    Engelsvold DH, Oymar K. Hospital admissions for childhood asthma in Rogaland, Norway, from 1984 to 2000. Acta Paediatr 2003;92: 610616.
  • 32
    Jonasson G, Lodrup Carlsen KC, Leegaard J, Carlsen KH, Mowinckel P, Halvorsen KS. Trends in hospital admissions for childhood asthma in Oslo, Norway, 1980–95. Allergy 2000;55: 232239.
  • 33
    Kluken H, Wienker T, Bieber T. Atopic eczema/dermatitis syndrome – a genetically complex disease. New advances in discovering the genetic contribution. Allergy 2003;58: 512.
  • 34
    Schafer T, Ruhdorfer S, Weigl L, Wessner D, Heinrich J, Wichmann HE et al. School education and allergic sensitization in adults. Allergy 2001;56: 12061210.
  • 35
    Nystad W, Nafstad P, Harris JR. Physical activity affects the prevalence of reported wheeze. Eur J Epidemiol 2001;17: 209212.
  • 36
    Nystad W, Stigum H, Carlsen KH. Increased level of bronchial responsiveness in inactive children with asthma. Respir Med 2001;95: 806810.
  • 37
    Nystad W, Meyer HE, Nafstad P, Tverdal A, Engeland A. Body mass index in relation to adult asthma among 135,000 Norwegian men and women. Am J Epidemiol 2004;160: 969976.
  • 38
    Magnus P, Jaakkola JJ. Secular trend in the occurrence of asthma among children and young adults: critical appraisal of repeated cross sectional surveys. BMJ 1997;314: 17951799.