Asthma in Australia 2008 
Figure 5.18
Hospital separations for asthma per 100,000 population, by broad age group, 1993–94 to 2006–07
Notes: Age standardised to the Australian population as at 30 June 2001. Separations for which the care type was reported as Newborn with no qualified days, and records for Hospital boarders and Posthumous organ procurement have been excluded. Asthma classified according to International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) code 493 and ICD, 10th Revision, Australian Modification (ICD-10-AM) codes J45 and J46. Hospital separations coded to ICD-9-CM (1993–97) were converted to ICD-10-AM using the following conversion: ages 5–34 years, converted by a factor of 1.0326; 35–64 years, converted by a factor of 0.7938; 65 years and over, converted by a factor of 0.4813. See Appendix 1 for details about age standardisation (Section A1.1.1) and conversion/comparability factors (Section A1.9.3).
Sources: AIHW National Hospital Morbidity Database; Australian Bureau of Statistics.
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