• 1
    Samet JM. Epidemiologic approaches for the identification of asthma. Chest. 1987;91(6 Suppl.): 74S8S.
  • 2
    Toren K, Brisman J, Jarvholm B. Asthma and asthma-like symptoms in adults assessed by questionnaires. A literature review. Chest. 1993;104(2): 6008.
  • 3
    Anderson HR, Gupta R, Strachan DP, Limb ES. 50 years of asthma: UK trends from 1955 to 2004. Thorax. 2007;62(1): 8590.
  • 4
    Barraclough R, Devereux G, Hendrick DJ, Stenton SC. Apparent but not real increase in asthma prevalence during the 1990s. Eur Respir J. 2002;20(4): 82633.
  • 5
    Brögger J, Bakke P, Eide GE, Johansen B, Andersen A, Gulsvik A. Long-term changes in adult asthma prevalence. Eur Respir J. 2003;21(3): 46872.
  • 6
    Ekerljung L, Andersson Å, Sundblad BM, Rönmark E, Larsson K, Ahlstedt S, Dahlen SE, Lundback B. Has the increase in the prevalence of asthma and respiratory symptoms reached a plateau in Stockholm, Sweden? Int J Tuberc Lung Dis. 2010;14(6): 76471.
  • 7
    Ekerljung L, Ronmark E, Larsson K, Sundblad BM, Bjerg A, Ahlstedt S, Dahlen SE, Lundback B. No further increase of incidence of asthma: incidence, remission and relapse of adult asthma in Sweden. Respir Med. 2008;102(12): 17306.
  • 8
    Lundback B, Ronmark E, Jonsson E, Larsson K, Sandstrom T. Incidence of physician-diagnosed asthma in adults – a real incidence or a result of increased awareness? Report from the Obstructive Lung Disease in Northern Sweden Studies. Respir Med. 2001;95(8): 68592.
  • 9
    Eagan TM, Brogger JC, Eide GE, Bakke PS. The incidence of adult asthma: a review. Int J Tuberc Lung Dis. 2005;9(6): 60312.
  • 10
    Toren K, Gislason T, Omenaas E, Jogi R, Forsberg B, Nystrom L, Olin AC, Svanes C, Janson C. A prospective study of asthma incidence and its predictors: the RHINE study. Eur Respir J 2004;24(6): 9426.
  • 11
    Cerveri I, Bruschi C, Ricciardi M, Zocchi L, Zoia MC, Rampulla C. Epidemiological diagnosis of asthma: methodological considerations of prevalence evaluation. Eur J Epidemiol. 1987;3(2): 2025.
  • 12
    Lundback B, Stjernberg N, Rosenhall L, Lindstrom M, Jonsson E, Andersson S. Methacholine reactivity and asthma. Report from the Northern Sweden Obstructive Lung Disease Project. Allergy. 1993;48(2): 11724.
  • 13
    Burney PG, Luczynska C, Chinn S, Jarvis D. The European Community Respiratory Health Survey. Eur Respir J. 1994;7(5): 95460.
  • 14
    Lundbäck B, Nyström L, Rosenhall L, Stjernberg N. Obstructive lung disease in northern Sweden: respiratory symptoms assessed in a postal survey. Eur Respir J 1991;4(3): 25766.
  • 15
    Lötvall J, Ekerljung L, Rönmark EP, Wennergren G, Linden A, Rönmark E, Toren K, Lundback B. West Sweden Asthma Study: prevalence trends over the last 18 years argues no recent increase in asthma. Respir Res 2009;10: 94.
  • 16
    Rönmark EP, Ekerljung L, Lötvall J, Torén K, Rönmark E, Lundbäck B. Large scale questionnaire survey on respiratory health in Sweden: effects of late- and non-response. Respir Med 2009;103(12): 180715.
  • 17
    Kotaniemi JT, Lundback B, Nieminen MM, Sovijarvi AR, Laitinen LA. Increase of asthma in adults in northern Finland? – A report from the FinEsS study. Allergy. 2001;56(2): 16974.
  • 18
    Meren M, Jannus-Pruljan L, Loit HM, Polluste J, Jonsson E, Kiviloog J, Lundback B. Asthma, chronic bronchitis and respiratory symptoms among adults in Estonia according to a postal questionnaire. Respir Med. 2001;95(12): 95464.
  • 19
    Larsson L, Boethius G. Differences in utilization of asthma drugs between two neighbouring Swedish provinces: relation to treatment in individuals with airway disease. J Intern Med. 1995;238(4): 30716.
  • 20
    Lundback B, Stjernberg N, Nystrom L, Lundback K, Lindstrom M, Rosenhall L. An interview study to estimate prevalence of asthma and chronic bronchitis. The obstructive lung disease in Northern Sweden study. Eur J Epidemiol. 1993;9(2): 12333.
  • 21
    Bousquet J, Van Cauwenberge P, Khaltaev N. Allergic rhinitis and its impact on asthma. J Allergy Clin Immunol. 2001;108(5 Suppl.): S147334.
  • 22
    Cohen J. A coefficient of agreement for nominal scales. Educ Psychol Meas. 1960;20(1): 3746.
  • 23
    Landis JR, Koch GG. The measurement of observer agreement for categorical data. Biometrics. 1977;33(1): 15974.
  • 24
    Pallasaho P, Lundback B, Laspa SL, Jonsson E, Kotaniemi J, Sovijarvi AR, Laitinen LA. Increasing prevalence of asthma but not of chronic bronchitis in Finland? Report from the FinEsS-Helsinki Study. Respir Med. 1999;93(11): 798809.
  • 25
    Comstock GW, Tockman MS, Helsing KJ, Hennesy KM. Standardized respiratory questionnaires: comparison of the old with the new. Am Rev Respir Dis. 1979;119(1): 4553.
  • 26
    Lebowitz MD, Burrows B. Comparison of questionnaires: the BMRC and NHLI respiratory questionnaires and a new self-completion questionnaire. Am Rev Respir Dis. 1976;113(5): 62735.
  • 27
    Samet JM. A historical and epidemiologic perspective on respiratory symptoms questionnaires. Am J Epidemiol. 1978;108(6): 43546.
  • 28
    Brogger JC, Bakke PS, Gulsvik A. Comparison of respiratory symptoms questionnaires. Int J Tuberc Lung Dis. 2000;4(1): 8390.
  • 29
    Burney PG, Laitinen LA, Perdrizet S, Huckauf H, Tattersfield AE, Chinn S, Poisson N, Heeren A, Britton JR, Jones T. Validity and repeatability of the IUATLD (1984) Bronchial Symptoms Questionnaire: an international comparison. Eur Respir J. 1989;2(10): 9405.
  • 30
    Smeeton NC, Rona RJ, Oyarzun M, Diaz PV. Agreement between responses to a standardized asthma questionnaire and a questionnaire following a demonstration of asthma symptoms in adults. Am J Epidemiol. 2006;163(4): 38491.
  • 31
    Abramson MJ, Hensley MJ, Saunders NA, Wlodarczyk JH. Evaluation of a new asthma questionnaire. J Asthma. 1991;28(2): 12939.
  • 32
    Helsing KJ, Comstock GW, Speizer FE, Ferris BG, Lebowitz MD, Tockman MS, Burrows B. Comparison of three standardized questionnaires on respiratory symptoms. Am Rev Respir Dis. 1979;120(6): 122131.
  • 33
    Schwarz N. Self-reports – how the questions shape the answers. Am Psychol. 1999;54(2): 93105.
  • 34
    Bergmann MM, Jacobs EJ, Hoffmann K, Boeing H. Agreement of self-reported medical history: comparison of an in-person interview with a self-administered questionnaire. Eur J Epidemiol. 2004;19(5): 41116.