JOURNAL ARTICLE

Fractures of the mandible and maxilla: A 10-year analysis

Estie Kruger, Marc Tennant
Australasian Medical Journal 2016, 9 (1): 17-24
26913087

BACKGROUND: Previous analysis of jaw fracture hospitalisations in Western Australia (WA) indicated disproportionately high rates of hospitalisations for Aboriginal people. This study was to follow-up on the earlier analysis to determine if inequalities in terms of jaw fracture hospitalisation rates between Aboriginal and non-Aboriginal people have changed.

AIMS: This study, done over a 10-year period from 1999/2000 to 2008/2009, aimed to determine rates of hospitalisations for jaw fractures in WA, trends over the 10-year period, and direct costs associated with these hospital admissions.

METHODS: Hospitalisation data were obtained from the Western Australian Hospital Morbidity Data System (HMDS). Episodes were selected on the basis of an ICD10-AM code being S02.4 (Fracture of the malar and maxillary bones) and S02.6 (Fracture of the mandible). Self-reported Aboriginality were used to compare Aboriginal to non-Aboriginal populations. Estimated cost of care was determined for each episode using the national standard diagnostic-related group (DRG) average price.

RESULTS: Our findings indicate that inequalities between Aboriginal and non-Aboriginal people in terms of hospital admissions for jaw fractures exist in WA, and continued over a decade-long period. Higher fracture rates occurred amongst males, Aboriginal people, younger adult age-groups, those from low socioeconomic areas, and those from remote and very remote areas. The DRG cost per person for jaw fractures ranged between AUD $842 and $109,002, with a median cost of $4,965.

CONCLUSION: Hospital admission rates for the treatment of maxillary and mandibular fractures is very strongly divided along racial and socioeconomic lines in WA.

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