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G. Garvey
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NU01 - Prevention (ID 265)
- Event: WCLC 2016
- Type: Nurses Session
- Track: Nurses
- Presentations: 1
- Moderators:L. Darlison, I. Nohavova
- Coordinates: 12/05/2016, 11:00 - 12:30, Schubert 5
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NU01.05 - Indigenous Population with Lung Cancer (ID 6436)
12:15 - 12:30 | Author(s): G. Garvey
- Abstract
- Presentation
Abstract:
Background As the most common cancer and the leading cause of cancer deaths worldwide, lung cancer has garnered increasing attention and efforts to reduce its toll. In contrast to the wealth of information on lung cancer burden for the general population, a rapid review of the academic literature (published in the past 10 years) to identify articles about lung cancer in Indigenous populations of four comparable OECD countries, found a paucity of information. The reasons for the paucity of articles are multi-faceted and most likely related to the lack of indigenous identification in health and cancer administrative datasets, among other issues. The search identified 62 articles which documented disparities in lung cancer outcomes for Indigenous peoples, identified likely reasons and made recommendations for better targeted prevention and management strategies. Indigenous people in all four countries, namely Aboriginal and/or Torres Strait Islanders in Australia; Māori in New Zealand; First Nations, Métis or Inuit in Canada; American Indians and/or Alaskan Natives (AIs/ANs) in the United States (US), have significantly lower life expectancy than their non-Indigenous counterparts, to which their lung cancer burden must surely contribute. The burden of lung cancer for Indigenous populations Lung cancer is one of the most commonly occurring cancers for indigenous people across all four countries. It has recently been reported that lung cancer incidence is higher in Indigenous men in Australia, Canada’s Métis and in Alaskan Natives than in their non-indigenous counterparts, and in Māori women, Alaskan Native women and Indigenous women in some Australian States [1]. Lung cancer is the leading cause of cancer deaths in Indigenous Australians (1 in 4 cancer deaths) and Māori where mortality rates were three times those of non-Māori (nearly 1 in 3 cancer deaths) [1, 2]. Lung cancer mortality among the Alaskan Native population is higher than the US white population, and among the highest of any racial/ethnic group in the US [3]. Survival following a diagnosis of lung cancer was lower for indigenous people in all four countries compared to their non-indigenous counterparts [4, 5, 6]. For example for Indigenous Australians five year survival following a diagnosis of lung cancer was 7% compared with 11%. Indigenous Australians are 1.7 times more likely to die from lung cancer than non-Indigenous Australians. In Australia, lung cancer accounted for 25% of all Indigenous deaths from cancer [2]. In the USA and Canada lung cancer survival rates improved over time for non-indigenous populations but remained unchanged or declined for the AI/AN and First Nations cohorts [6, 8], increasing disparities. Explaining the disparities The greater burden of lung cancer in indigenous populations is largely attributable to the higher prevalence of tobacco smoking. In both Australia and New Zealand, 39% of the Indigenous populations aged 15 and over were daily smokers – almost 3 times the rate of the non-Indigenous populations [4, 9]. AI/AN populations had the highest tobacco use (29%) of any population group in the USA [10]. Smoking rates among Canada’s Aboriginal populations are on average twice as high as those of non-Aboriginal Canadians, with nearly half of Inuit adults smoking daily or regularly [11]. While smoking rates in all four countries have decreased, the decline in indigenous smoking prevalence has occurred at the same or slower rate than for non-indigenous people, meaning the gap in smoking rates has remained. Although higher lung cancer incidence and mortality rates for indigenous peoples is related to patterns of tobacco use, they also reflect the significant disparities in terms of socio-economic disadvantage, social dislocation, geographic/remoteness and related stressors indigenous people face [1]. Poorer survival of indigenous people with lung cancer is attributed to a greater likelihood of advanced disease at diagnosis [12], lower rates of treatment, not receiving optimal lung cancer care concordant with clinical guidelines care [1, 7, 13, 14], and higher prevalence of comorbidities [2]. But these factors do not explain all the survival disparities. Recent research has shifted focus from patient and community-level factors to examining system-level and societal factors that affect lung cancer care and outcomes for indigenous patients including difficulty accessing health services and the cultural appropriateness of healthcare services [6]; lack of coordination and follow-up processes [15, 16]; health professional behaviours including knowledge about lung cancer, relationships with patients and carers, communication and responsiveness to needs [15, 16]; and the impact of stigma and shame on delays in medical help-seeking and lung cancer patients’ quality of life [16]. Strategies to reduce the disproportionate burden The current evidence highlights that significant disparities exist in lung cancer outcomes between indigenous and non-indigenous peoples and that multiple strategies are required to reduce the burden of lung cancer for indigenous people. At the systems level, inclusion of an indigenous identifier in administrative data is required to accurately identify and monitor lung cancer outcomes. The provision of and timely access to medically effective and culturally accepted diagnostic, treatment and support services, and personalised care that addresses the social-cultural needs of indigenous patients, is required to improve indigenous patients engagement with cancer care services and, in turn, cancer outcomes [12]. Tobacco control and smoking cessation initiatives are critical – but there is limited evidence about what works in indigenous populations. While public policy initiatives have reduced overall smoking prevalence, they appear to have had less impact on smoking rates among indigenous populations. Well-targeted tobacco control strategies need to consider historical, social, economic and cultural reasons why indigenous people smoke – factors that also can undermine efforts to reduce smoking uptake and encourage indigenous people to quit. The use of both comprehensive and tailored interventions has been recommended, including culturally appropriate health materials and activities, with indigenous peoples’ engagement and control [17]. It is also essential to increase symptom awareness to expedite diagnoses, and there are novel initiatives aimed at improving awareness of lung cancer risk factors and symptoms among indigenous communities and health professionals. Reducing the disproportionate burden of lung cancer on indigenous peoples requires targeted and multifaceted approaches that recognise and address the broad and interconnected web of factors at patient, provider and system levels that impact on optimal care and outcomes. References 1. Moore, S.P., et al., Cancer incidence in indigenous people in Australia, New Zealand, Canada, and the USA: a comparative population-based study. Lancet Oncol, 2015. 2. Australian Institute of Health and Welfare, Cancer in Australia: an overview 2014. Cancer series No 90. Cat. no. CAN 88. 2014, AIHW: Canberra. 3. Lanier, A.P.D., G. E.;Kelly, J. J.;Provost, E., Disparities in cancer mortality among Alaska Native people, 1994-2003. Alaska Med, 2008. 49(4): p. 120-5. 4. Australian Institute of Health and Welfare & Cancer Australia 2013. Cancer in Aboriginal and Torres Strait Islander peoples of Australia: an overview. Cancer series no 78. Cat. No. CAN 75. Canberra:AIHW 5. NZ Ministry of Health (2015) Cancer Patient Survival: 1994 to 2011 Wellington 6. Nishri, E.D.S., A. J.;Withrow, D. R.;Marrett, L. D., Cancer survival among First Nations people of Ontario, Canada (1968-2007). Int J Cancer, 2015. 136(3): p. 639-45. 7. Smith CB, Bonomi M, Packer S, Wisnivesky JP. Disparities in lung cancer stage, treatment and survival among American Indians and Alaskan Natives. Lung Cancer. 2011 May;72(2):160-4. doi: 10.1016/j.lungcan.2010.08.015 8. White, M.C.E., D. K.;Swan, J.;Wiggins, C. L.;Eheman, C.;Kaur, J. S., Disparities in cancer mortality and incidence among American Indians and Alaska Natives in the United States. Am J Public Health, 2014. 104 Suppl 3: p. S377-87. 9. Ministry of Health, Tobacc use 2012/13: New Zealand health survey. 2014, Ministry of Health: Wellington. 10. Centers for Disease Control and Prevention, Current Cigarette Smoking Among Adults—United States, 2005–2014. Morbidity and Mortality Weekly Report, 2015. 64(44): p. 1233-40. 11. Statistics Canada, Select health indicators of First Nations people living off reserve, Métis and Inuit. Catalogue no. 82-6240X. 2013. 12. Moore, S.P.G., Adèle C.;Bray, Freddie;Garvey, Gail;Coory, Michael;Martin, Jennifer;Valery, Patricia C., Survival disparities in Australia: an analysis of patterns of care and comorbidities among indigenous and non-indigenous cancer patients. BMC Cancer, 2014. 14: p. 517-517. 13. Javid, SH, Varghese TK, Morris AM, Porter MP, He H, Buchwald D, Flum DR; Collaborative to Improve Native Cancer Outcomes (CINCO). Guideline-concordant cancer care and survival among American Indian/Alaskan Native patients. Cancer. 2014 Jul 15;120(14):2183-90. 14. Whop, LJ, Bernardes CM, Kondalsamy-Chennakesavan S, Darshan D, Chetty N, Moore SP, Garvey G, Walpole E, Baade P, Valery PC. Indigenous Australians with non-small cell lung cancer or cervical cancer receive suboptimal treatment. Asia Pac J Clin Oncol. 2016 Mar 21. doi: 10.1111/ajco.124632016 15. Dunn, J. , Garvey, G., Valery, P. C., Ball, D., Fong, K.M. , Vinod, S., O’Connell, DL. & Chambers, S.K. Barriers to Lung Cancer Care: Health Professionals’ Perspectives. Accepted for publication 24[th] September 2016. Journal of Supportive Care in Cancer 16. Chambers, S.K.B., P.;Youl, P.;Aitken, J.;Occhipinti, S.;Vinod, S.;Valery, P. C.;Garvey, G.;Fong, K. M.;Ball, D.;Zorbas, H.;Dunn, J.;O'Connell, D. L., Psychological distress and quality of life in lung cancer: the role of health-related stigma, illness appraisals and social constraints. Psychooncology, 2015. 24(11): p. 1569-77. 17. Minichiello, A., et al., Effective strategies to reduce commercial tobacco use in Indigenous communities globally: A systematic review.(Report). 2016. 16(21).
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