Improved survival for non-Hodgkin lymphoma patients in New South Wales, Australia
- PMID: 20497580
- PMCID: PMC2886045
- DOI: 10.1186/1471-2407-10-231
Improved survival for non-Hodgkin lymphoma patients in New South Wales, Australia
Abstract
Background: We evaluated if the survival benefit of adding rituximab to standard chemotherapy for non-Hodgkin lymphoma (NHL) observed in clinical trials has been experienced by an Australian NHL patient population.
Methods: NHL cases diagnosed in 1985-2004 in New South Wales (NSW) were followed-up to the end of 2004. Rituximab prescription data were obtained from Medicare Australia. Using a Poisson regression model adjusted for age group, sex, NHL subtype and time period (1990-1994, 1995-1999 and 2000-2004), we estimated excess risk of death after a diagnosis of NHL. To give context to the survival trend, trends in incidence and mortality were also estimated.
Results: Compared with 1990-1994, after adjusting for age, sex and NHL subtype the relative excess risk of death was significantly lower (p < 0.0001) in 1995-1999 (0.89) and 2000-2004 (0.74). A sharp fall in mortality was observed from 2000 to 2004 (annual percentage change (APC) = -4.7, p = 0.009), while a small but significant rise in incidence was seen from 1990 to 2004 (APC = 0.5, p = 0.01). The number of times rituximab was dispensed in NSW increased rapidly from 1274 in 1999 to 9250 in 2004.
Conclusion: It is likely that some benefit of adding rituximab to the standard chemotherapy for NHL has been experienced at the population level.
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References
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- Australian Drug Evaluation Committee - 197th meeting recommendations. http://www.tga.gov.au/docs/html/adec/adec0197.htm
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- Australian Drug Evaluation Committee - 220th meeting recommendations. http://www.tga.gov.au/docs/html/adec/adec0220.htm
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- Tracey E, Alam N, Chen W, Bishop J. Cancer in New South Wales: Incidence and Mortality 2006. Sydney: Cancer Institute NSW; 2008.
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