The influence of socio-economic and locational disadvantage on patterns of surgical care for lung cancer in Western Australia 1982-2001

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Abstract
Sonja E Hall is with the School of Population Health, The University of Western Australia.C D'Arcy J Holman is Head, School of Population Health, The University of Western Australia.Harry Sheiner is Chairman, WA Clinical Oncology Group, c/o Cancer Foundation of Western Australia.Objective: Patterns of in-hospital surgical care for lung cancer in Western Australia were examined, including the effects of demographic, locational and socio-economic disadvantage and the possession of private health insurance, on the likelihood of receiving surgeryPatients and methods: The WA Record Linkage Project was used to extract hospital morbidity, cancer and death records of all people with lung cancer in Western Australia from 1982 to 2001. The likelihood of receiving lung cancer surgery was estimated, after adjustment for co-variates, using logistic regression.Results: Overall, 16% of patients received surgery for their lung cancer, although this varied according to histology. Patients who received surgery were typically younger, female, non-indigenous and had less comorbidity. Patients from socio-economically disadvantaged groups tended to be less likely to receive surgery (OR 0.79; 95% CI 0.61-1.04) although this was not significant for each category of disadvantage. Those who had their first hospital admission, with a mention of lung cancer, in a rural hospital were less likely to receive surgery (OR 0.26; 95% CI 0.19-0.36) than those in metropolitan hospitals, although residential location generally had less effect (OR 0.36; 95% CI 0.14-0.92). Patients admitted as a private patient either to a private or public hospital for their first mention of lung cancer had increased likelihood of receiving surgery (OR 1.15; 95% CI 1.02-1.30); however first admission to a private hospital had no effect (OR 0.99: 95% CI 0.85-1.16).Conclusion: The utilisation of lung cancer surgery was low with several factors found to affect the rate. Patients from socio-economically or locationally disadvantaged backgrounds, indigenous patients or patients without private health insurance were less likely to receive lung cancer surgery than those from more advantaged groups.

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