Aboriginal health workers.
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OBJECTIVE: To compare and contrast the characteristics of suicides among aboriginal and nonaboriginal people in Manitoba. DESIGN: Retrospective review of all suicides, based on a confidential analysis of records held by the Office of the Chief Medical Examiner. SETTING: Manitoba between 1988 and 1994. OUTCOME MEASURES: Standardized suicide rates, age- and sex-specific suicide rates, blood alcohol level at time of death, psychiatric help-seeking behaviour before suicide and residence on a reserve. RESULTS: Age-standardized suicide rates were 31.8 and 13.6 per 100,000 population per year among aboriginal and nonaboriginal people, respectively. The mean age of aboriginal people who committed suicide was 27.0 (standard deviation [SD] 10.8) years, compared with a mean age of 44.6 (SD 18.8) years for nonaboriginal people who committed suicide (p < 0.001). Blood alcohol levels at the time of death were a mean of 28 (SD 23) mmol/L among aboriginal people and 12 (SD 20) mmol/L among nonaboriginal people (p < 0.0001). Before their death, 21.9% of nonaboriginal suicide victims had sought psychiatric care whereas among aboriginal suicide victims 6.6% had sought care (p < 0.0001). Although the suicide rate was higher among aboriginal people living on reserve than among those living off reserve (52.9 v. 31.3 per 100,000 per year), both of these rates were substantially higher than the overall rates among nonaboriginal people. There were no significant differences in mean age, sex, blood alcohol level and previous psychiatric care among aboriginal people who committed suicide living on and off reserve. CONCLUSIONS: There was a high rate of suicide among Manitoba's aboriginal people between 1988 and 1994; this rate was comparable to earlier estimates of national suicide rates among aboriginal people. The reserve environment does not, by itself, account for the high suicide rate among Manitoba's aboriginal people. Further study of help-seeking behaviour and the association between alcohol abuse and suicide, particularly among aboriginal peoples, is indicated.
We examine mortality and fertility patterns of aboriginal (primarily Evenki and Keto) and Russian (i.e., nonaboriginal) populations from the Baykit District of Central Siberia for the period 1982-1994. Mortality rates in the aboriginal population of Baykit are substantially greater than those observed in the Russians and are comparable to levels recently reported for other indigenous Siberian groups. Infant mortality rates average 48 per 1000 live births among Baykit aboriginals, three times greater than the Russians of the district (15 per 1000 births) and more than double the rates for Inuit and Indian populations of Canada. Similarly, crude death rates of the Baykit aboriginals are twice as high as those observed in either the Baykit Russians or the Canadian aboriginal populations (13 vs 6-7 deaths per 1000 individuals). Birth rates of the indigenous population of Baykit are higher than those of the Russians (33 vs. 15 births per 1000 individuals) but are comparable to those of Canadian aboriginal groups. Violence and accidents are the leading causes of adult male mortality in both ethnic groups, whereas circulatory diseases have emerged as the prime cause of death in women. The greater male mortality resulting from violence and accidents is a widely observed cross-cultural phenomenon. The emergence of circulatory diseases as a major mortality risk for women, however, appears to be linked to specific lifestyle changes associated with Soviet reorganization of indigenous Siberian societies. Marked declines in mortality and increases in fertility were observed in the Baykit aboriginal population during the mid to late 1980s with the government's implementation of anti-alcohol policies. The decline in mortality, however, was largely erased during the early 1990s, as the region became increasingly isolated and marginalized following the collapse of the Soviet Union. Demographic trends in the Baykit District suggest that because the indigenous groups have become more isolated, many are returning to a more traditional subsistence lifestyle.
This paper discusses the advantages of adopting forms of participatory action research with aboriginal Canadians. Using a recent qualitative study of non-insulin-dependent diabetes mellitus among the James Bay Cree, it outlines and discusses the methodology used to construct a form of action research that focused on what meaning the Cree gave to the rising incidence and prevalence of diabetes. In order to understand this perspective, the researchers recruited members of the Cree community as co-researchers in the study. This facilitated the development of a Cree perspective on diabetes and also allowed the Cree members of the study to acquire a grounding in the knowledge and skills necessary for forms of qualitative research that can inform both policy and practice in health care and related areas. In particular, the paper discusses how the study was constructed and what lessons can be drawn from this form of collaborative inquiry.
OBJECTIVE: To determine the rates, causes and outcomes of non-diabetic end-stage renal disease (ESRD) among aboriginal and non-aboriginal people in Saskatchewan. DESIGN: Retrospective population-based study using data from the Canadian Organ Replacement Register. SETTING: Saskatchewan. SUBJECTS: All patients with non-diabetic ESRD diagnosed between Jan. 1, 1981, and Dec. 31, 1990. MAIN OUTCOME MEASURES: Age- and sex-specific as well as age-adjusted incidence rates of non-diabetic ESRD among aboriginal and non-aboriginal people in Saskatchewan, causes of non-diabetic ESRD, mortality rates, causes of death and renal transplantation rates. RESULTS: The 10-year incidence rates of non-diabetic ESRD were higher in all age groups among aboriginal people than among non-aboriginal people. The overall risk ratio for aboriginal people was 2.56. Aboriginal people experienced non-diabetic ESRD at an earlier age and were twice as likely to have a form of glomerulonephritis as a cause. Crude mortality rates, causes of death and transplantation rates were similar in the 2 populations, although we were unable to adjust these for differences in age. CONCLUSION: Although diabetes is the most common cause of ESRD among aboriginal people in Saskatchewan, this population also experiences an excessive burden of non-diabetic ESRD, which is largely explained by a higher rate of glomerulonephritis.
OBJECTIVE: To determine onset subtypes and HLA associations of juvenile rheumatoid arthritis (JRA) in a First Nations (aboriginal) population; to determine whether population frequencies of HLA antigens may explain the distribution of subtypes of JRA in this population. METHODS: All patients were children from Manitoba and Northwestern Ontario seen in a single pediatric rheumatology clinic between 1975 and 1996. Patients were identified from a clinic registry. Controls were adults of Algonkian Cree and Ojibway heritage. Class I and II major histocompatibility (HLA) typing was performed for First Nations patients and controls. RESULTS: There were a total of 74 First Nations patients with JRA. The relative frequency of rheumatoid factor (RF) positive polyarticular JRA was higher and that of pauciarticular JRA was lower in First Nations compared with Caucasian patients (42 versus 3% and 22 versus 58%, respectively; p = 0.00000). HLA-DRB1*04 (63%), 08 (43%), and 1402 (25%) were the most common DRB1 antigens among controls. The main subtypes of DRB1*04 were 0404 (33% of controls) and 0407 (23%). HLA typing was performed for 39 First Nations patients; 27 were Cree or Ojibway, 4 were from other tribes, and 8 were part First Nations. Among Cree and Ojibway, 59% of controls and 63% of patients with RF positive polyarticular JRA (n = 16) had HLA-DRB1 antigens bearing the rheumatoid arthritis (RA) shared epitope (OR 1.16, 95% CI: 0.38, 3.48). The OR for polyarticular RF positive JRA in those with DRB1*0802 and 0901 were 0.15, 95% CI: 0.02; and 1.24 and 5.83, 95% CI: 1.58, 28.38, respectively. CONCLUSION: There was a high frequency of the RA shared epitope represented by both HLA-DRB1*0404 and 1402 in this Algonkian population. This high frequency may explain the high frequency of RF positive polyarticular JRA. DRB1*0802 may be protective, whereas DRB1*0901 may increase the risk for this subtype of JRA.
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This article documents the exposure to environmental contaminants within sub-groups of the Canadian population who are considered to be at risk as a result of the food they eat. We measured the concentrations of polychlorinated biphenyls (PCBs) and mercury in the blood drawn from the umbilical cords of newborns in various Aboriginal communities, in a coastal community and in the general population. Average concentrations of Aroclor 1260 ranged between 0.3 and 2.0 micrograms/L and were clearly highest among the Inuit of Nunavik and Baffin Island and among the Montagnais of Quebec. In these groups, we found contaminant levels in the blood of newborns that exceed the threshold beyond which cognitive impairments are expected to result. Average concentrations of mercury ranged between 1.0 and 14.2 micrograms/L; the Inuit of Nunavik and the NWT exhibited the highest exposure levels. A portion of the Nunavik and NWT Inuit had concentrations beyond the critical threshold for the appearance of neurological consequences. The variations in exposure levels resulted from the different nutritional practices of these Canadian sub-groups.
OBJECTIVES: As part of a larger study of polychlorinated dibenzodioxin (PCDD) and dibenzofuran (PCDF) pollution, to describe and compare Aboriginal and non-Aboriginal residents' recalled diets. METHODS: We surveyed a stratified random sample aged 25 to 64 years: forest products mill employees (n = 84), Aboriginal reserve residents (n = 78), and other residents (n = 80). We administered a questionnaire on intake of fish/seafood, wild game and plants, domesticated animal meat and eggs, dairy products, vegetable oils and cereals; age, gender, childbearing, lactation, residence and smoking. We measured height and weight. RESULTS: Reserve residents ate less seafood, but more fish roe, eulachon grease, smoked salmon, clams and sea urchins, more deer organs, hamburger meat, pork, fried chicken, and hot-dogs, but less rabbit, beef steaks/roasts, high-fibre cereals, potato chips, bread, cheese and milk. CONCLUSIONS: We cannot yet quantify PCDD and PCDF intakes. The wild food consumption data are unique and may be useful for risk assessments in the target population and similar communities.
BACKGROUND: In recent years, an increase in the prevalence of sexual abuse of women has been reported in Canada and elsewhere. However, there are few empirical data on the extent of the problem in Canadian aboriginal populations. The authors investigated the presence of a reported history of sexual abuse and other health determinants in a sample of women attending a community health centre with a substantial aboriginal population. This allowed determination of whether reported sexual abuse and its associated demographic and health-related effects were different for aboriginal and non-aboriginal women. METHODS: A sample of 1696 women was selected from women attending a community health centre in a predominantly low-income inner-city area of Winnipeg for a cross-sectional survey designed to study the association between sexual behavior and cervical infections. The survey was conducted between November 1992 and March 1995 and involved a clinical examination, laboratory tests and an interviewer-administered questionnaire. A substudy was conducted among 1003 women who were asked 2 questions about sexual abuse. RESULTS: The overall response rate for the main study was 87%. Of the 1003 women who were asked the questions about sexual abuse, 843 (84.0%) responded. Among the respondents, 368 (43.6%) were aboriginal. Overall, 308 (36.5%) of the respondents reported having been sexually abused, 74.0% of the incidents having occurred during childhood. The prevalence was higher among aboriginal women than among non-aboriginal women (44.8% v. 30.1%, p < 0.001). Women who had been sexually abused were younger when they first had sexual intercourse, they had multiple partners, and they had a history of sexually transmitted diseases. In addition, non-aboriginal women who had been sexually abused were more likely than those who had not been abused to have been separated or divorced, unemployed and multiparous and to have used an intrauterine device rather than oral contraceptives. Aboriginal women who had been sexually abused were more likely than those who had not been abused to have been separated or divorced, unemployed and multiparous and to have used an intrauterine device rather than oral contraceptives. Aboriginal women who had been sexually abused were more likely than those who had not been abused to have had abnormal Papanicolaou smears. The proportion of smokers was higher among the abused women than among the non-abused women in both ethnic groups. INTERPRETATION: A history of sexual abuse was associated with other clinical, lifestyle and reproductive factors. This suggests that sexual abuse may be associated with subsequent health behaviors, beyond specific physical and psychosocial disorders. Aboriginal and non-aboriginal women who have suffered sexual abuse showed substantial differences in their subsequent health and health-related behaviours.
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We describe the hospital utilization of 194 Saskatchewan persons with Fetal Alcohol Syndrome (88% Aboriginal), born between 1973-92. Complete provincial hospitalization data were obtained for 128 patients; partial data for 29 patients. Proportionately more persons missing data were adopted, not living with biological family members or were deceased. The hospital separation rates for the children with FAS, pooled from 1987-91, compared to the 1989-90 Saskatchewan rates were significantly higher (95% level of confidence) for males and females < 1 year, 1-4 years and 5-14 years of age. Relative to Saskatchewan Registered Indians, significantly higher hospitalization rate ratios were observed for males with FAS in all age groups and for females only age 5-14 years. Rate ratios for younger females may not have achieved significance because of missing data. Higher hospitalization rates in children with FAS may not be explained solely by factors associated with ethnicity.
OBJECTIVES: This article examines differences in health status and health determinants between residents of the North (Yukon and Northwest Territories) and of the provinces, and between Aboriginal and non-Aboriginal territorial residents. The use of health services and medications is also analyzed. DATA SOURCE: The data are from the 1994/95 National Population Health Survey (NPHS), both the territorial and provincial components. The population analyzed consists of household residents aged 12 and older. MAIN RESULTS: Compared with non-Aboriginal Northerners, Aboriginal people in the territories more frequently rated their health poorly. However, they reported fewer injuries and diagnosed chronic conditions. The prevalence of alcohol consumption was lower among Aboriginal people, while the proportion of smokers was substantially higher. A lower proportion of Aboriginal territorial residents had consulted a general practitioner in the previous year, and a higher proportion had consulted a nurse. Aboriginal people also had a low rate of medication use.
Alaskan Natives (Indians and Eskimos) have an extraordinary incidence of invasive Haemophilus influenzae type b (Hib) disease (500 cases/100,000 children younger than 5 years of age) and also an increased incidence of recurrent disease. However, the incidence of primary Hib disease and recurrent disease are not excessive in non-Native children in Alaska (mainly Caucasian). Twelve recurrent cases in Alaskan Natives were studied, 10 of which were detected in surveillance activities between 1971 and 1984. These recurrent episodes occurred 23 to 197 days after the initial episodes (median, 51 days); the overall rate of recurrent disease was 3.5%. The ages of the patients with recurrent disease were significantly younger than single episode cases. To determine if disease recurrence was a manifestation of the high disease incidence and earlier age at onset of disease, we calculated an expected number of recurrent cases for our study population, based on the incidence observed in children with first episodes and the period of observed follow-up. The expected number of recurrent cases was only 1.9, significantly fewer than the 10 observed, indicating that age and the high incidence of disease alone were not the only factors contributing to the recurrent disease. No other significant clinical or epidemiologic risk factors could be identified. Patients who develop recurrent invasive Hib disease may represent a subset of this population with unusual disease susceptibility.
Focus group research was conducted to examine indigenous conceptions of wellness among the Yup'ik Eskimos of southwestern Alaska. The dialogue on wellness emphasized the importance of living a traditional lifestyle, seeking creative solutions to manage drastic cultural change, and fostering connection within the communities and the native landscape. These themes mesh well with existing characterizations of Alaska Native experiences and worldviews, and reflect substantial links between enculturation, acculturation and health. The data underscores the importance of comprehending local conceptions of wellness in order to effectively work toward promoting optimal health. This paper represents part of an ongoing dialogue in which researchers and native communities co-direct the investigation into healthy ways of being in the world.
Data on gonococcal infections confirmed by culture show that the native population of Alaska has an incidence rate many times higher than the other population groups; both sexes and all age groups are affected. In contrast to the remainder of the United States, where gonorrhoea occurs much more often in men, native Alaskan women are as likely to be infected as native Alaskan men.