Hospital separations were classified using ICD-9-CM up to 1997-98 and ICD-10-AM from 1998-99 onwards. Rates were age-adjusted using the Australian population as at 30 June 2001. Numbers for 2004-05 include an estimate of the small number of interstate hospitalisations, data for which were unavailable at the time of production.
Source:
NSW Inpatient Statistics Collection and ABS population estimates (HOIST). Centre for Epidemiology and Research, NSW Department of Health.
Hospitalisation rates for the removal or restoration of teeth among children under the age of five years increased by 68.8% between 1989-90 and 2004-05. The rates for both males and females remained fairly steady until 1994-95 and then increased each year.
In the period between 1989-90 to 2004-05 the hospitalisation rate for the restoration of teeth among children aged 0-4 years almost doubled from 96.8 to 185.6 per 100,000 population, but the rate for removal of teeth increased by 56% (from 173.2 to 270.3 per 100,000 population) in the same period. The need for extractions and fillings is dictated by dental caries. In this age group, early feeding patterns and prolonged daily use of nursing bottles contributes to dental caries.
Hospitalisation rates for the removal or restoration of teeth among children aged 5-14 years increased by 122.9% over the period 1989-90 to 2004-05. The hospitalisation rate for the restoration of teeth in this age group rose four-fold from 27.4 to 117.4 per 100,000 population while that for the removal of teeth almost doubled (increased by 94%) over this period. Poor dietary and oral hygiene practices are likely to be major contributing factors to dental caries at this age. Some children may be admitted because dental procedures may be difficult to perform in outpatient settings at this age.
The proportion of hospitalisations for removal and restoration of teeth in children aged 0-4 years in public hospitals decreased from 57.7% in 2000-01 to 51.6% in 2004-05. Similarly, for those aged 5-14 years, this proportion decreased from 39.3% in 2000-01 to 33.7% in 2004-05. Consequently, the rate of hospitalisations increased in private hospitals.
In the five-year period from 2000-01 to 2004-05 the hospitalisation rate for restoration of teeth in children aged 0-4 years in private hospitals increased from 106.8 to 136.0 per 100,000 population and that for removal of teeth in the same age group increased from 56.0 to 81.8 per 100,000 population.
In the same five-year period, the hospitalisation rates in children aged 5-14 years in private hospitals rose from 52.4 to 88.0 per 100,000 population for the restoration of teeth and from 153.8 to 238.3 per 100,000 population for the removal of teeth.
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Population Health Division. The health of the people of New South Wales -
Report of the Chief Health Officer. Sydney: NSW Department of Health. Available at:
http://www.health.nsw.gov.au/public-health/chorep/ora/ora_prockidhos.htm. Accessed (insert date of access).
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