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01.12.2015 | Research article | Ausgabe 1/2016 Open Access

BMC Public Health 1/2016

All-age hospitalization rates in coal seam gas areas in Queensland, Australia, 1995–2011

Zeitschrift:
BMC Public Health > Ausgabe 1/2016
Autoren:
Angela K. Werner, Kerrianne Watt, Cate M. Cameron, Sue Vink, Andrew Page, Paul Jagals
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​s12889-016-2787-5) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

AKW and KW contributed to the design of the study, statistical analysis, and interpretation of the results. AKW had primary responsibility for the manuscript. CMC contributed to the statistical analysis, interpretation of results, and manuscript revisions. SV and PJ contributed to the design of the study, overall editing, and manuscript revision. AP contributed to statistical analysis, interpretation of results, overall editing, and manuscript revision. All authors have read and approved the final version of the manuscript.

Abstract

Background

Unconventional natural gas development (UNGD) is expanding globally, with Australia expanding development in the form of coal seam gas (CSG). Residents and other interest groups have voiced concerns about the potential environmental and health impacts related to CSG. This paper compares objective health outcomes from three study areas in Queensland, Australia to examine potential environmentally-related health impacts.

Methods

Three study areas were selected in an ecologic study design: a CSG area, a coal mining area, and a rural/agricultural area. Admitted patient data, as well as population data and additional factors, were obtained for each calendar year from 1995 through 2011 to calculate all-age hospitalization rates and age-standardized rates in each of these areas. The three areas were compared using negative binomial regression analyses (unadjusted and adjusted models) to examine increases over time of hospitalization rates grouped by primary diagnosis (19 ICD chapters), with rate ratios serving to compare the within-area regression slopes between the areas.

Results

The CSG area did not have significant increases in all-cause hospitalization rates over time for all-ages compared to the coal and rural study areas in adjusted models (RR: 1.02, 95 % CI: 1.00–1.04 as compared to the coal mining area; RR: 1.01, 95 % CI: 0.99–1.04 as compared to the rural area). While the CSG area did not show significant increases in specific hospitalization rates compared to both the coal mining and rural areas for any ICD chapters in the adjusted models, the CSG area showed increases in hospitalization rates compared only to the rural area for neoplasms (RR: 1.09, 95 % CI: 1.02–1.16) and blood/immune diseases (RR: 1.14, 95 % CI: 1.02–1.27).

Conclusions

This exploratory study of all-age hospitalization rates for three study areas in Queensland suggests that certain hospital admissions rates increased more quickly in the CSG study area than in other study areas, particularly the rural area, after adjusting for key sociodemographic factors. These findings are an important first step in identifying potential health impacts of CSG in the Australian context and serve to generate hypotheses for future studies.
Zusatzmaterial
Additional file 1: Number of admissions and 95 % confidence intervals for the CSG, RLI, and CHI study areas for ‘Blood/immune’ disease and ‘Neoplasms’ -related admissions a . (DOCX 18 kb)
12889_2016_2787_MOESM1_ESM.docx
Literatur
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