References
- Evans R, III, Mullally D I, Wilson R W, Gergen P J, Rosenberg H M, Grauman J S, Chevarley F M, Feinleib M. National trends in the morbidity and mortality of asthma in the U.S. Chest 1987; 91(Suppl 6)65S–74S
- Sears M R, Rea H H, Beaglehole R, Gillies A JD, Hoist P E, O'Donnell T V, Rothwell R PG, Sutherland D C. Asthma mortality in New Zealand: a two year national study. N Z Med J 1985; 98: 271–275
- Sly R M. Mortality from asthma. 1979–1984. J Allergy Clin Immunol 1988; 82: 705–717
- Williams M H, Jr. Increasing severity of asthma from 1960–1987. New Engl J Med 1989; 320(15)1015–1016
- Wigle D T. Highlights of the national workshop on asthma, Ottawa, May 19, 1988. Can Med Assoc J 1989; 140: 671–673
- Mao Y, Semenciw R, Morrison H, MacWillian L, Davies J, Wigle D. Increased rates of illness and death from asthma in Canada. Can Med Assoc J 1987; 137: 620–624
- Potthoff R F. Telephone sampling in epidemiologic research: to reap the benefits, avoid the pitfalls. Am J Epidemiol 1994; 139: 967–978
- Richards J M, Jr, Dolce J J, Windsor R A, Bailey W C, Brooks C M, Soong S. Patient characteristics relevant to effective self management: scales for assessing attitudes of adults toward asthma. J Asthma 1989; 26(2)99–108
- Norusis M J. SPSS Advanced Statistics 6.1. SPSS Inc., Chicago, Illinois 1994
- Dean A G, Dean J A, Coulombier D, Brendel K A, Smith D C, Burton A H, Dicker R C, Sullivan K, Fagan R F, Arner T G. Epi Info, Version 6: A Word Processing, Database and Statistics Program for Epidemiology on Microcomputers. Centers for Disease Control and Prevention, Atlanta, Georgia 1994
- Campbell D A, McLennan G, Coates J R, Frith P A, et al. Near fatal asthma attacks: the reliability of descriptive information collected from close acquaintances. Thorax 1993; 48: 1099–1104
- Nelson L M, Longstreth W T, Jr, Koepsell T D, Checkoway H, van Belle G. Completeness and accuracy of interview data from proxy respondents: demographic, medical and life‐style factors. Epidemiology 1994; 5: 204–217
- Anderson H R, Bailey P A, Cooper J S, Palmer C J, West S. Morbidity and school absence caused by asthma and wheezing illness. Arch Dis Child 1983; 55: 777–784
- O'Conner G T, Weiss S T. Clinical and symptom measures. Am J Respir Cut Care Med 1994; 149: S21–S28
- van der Windt D AWM, Nagelferke A F, Bouter L M, Dankert‐Roelse J E, Veerman A JP. Clinical scores for acute asthma in pre‐school children. A review of the literature. J Clin Epidmiol 1994; 47(6)635–646
- Tough S C, Green F Y, Paul J E, Wigle D T, Butt J C. Sudden death from asthma in 108 children and young adults. J Asthma 1996; 33(3)179–188
- Bailey W E, Richards J M, Manzella B A, Brooks C M, Windsor R A, Soong S. Characteristics and correlates of asthma in a university clinic population. Chest 1990; 98: 821–828
- Dales R E, Schweitzer I, Kerr P, Gougeon L, Rivington R, Draper J. Risk factors for recurrent emergency department visits for asthma. Thorax 1995; 50(5)520–524
- Spitzer W O, Suissa S, Ernst P, Horwitz R I, et al. The use of beta‐agonists and the risk of death and near death from asthma. N Engl J Med 1992; 326: 501–506
- Picado C. Classification of severe asthma exacerbations: A proposal. Eur Respir J 1996; 9: 1775–1778