Search

Background: Young breast cancer survivors (aged 50 years and under) and their partners are at an elevated risk for relationship distress and poor psychological adjustment relative to older age couples. Limited availability of time and resources and the distance to travel are major barriers to engaging in evidence-based psychosocial support programs. This paper describes the study protocol of a novel, manualized online intervention called Couplelinks that was developed to improve relationship adjustment and psychological wellbeing of young couples affected by breast cancer. Couplelinks is a custom-designed website offering a professionally facilitated, couple-centered intervention that entails informational, experiential, and interactive components. Methods/Design: A total of 80 heterosexual couples from across Canada in which the female partner has been diagnosed with a primary breast cancer will be recruited and randomized to a treatment or waitlist control group. Six dyadic learning modules form the core of the program and will be undertaken on a weekly basis. The manualized online intervention involves psycho-education and experiential exercises to enhance communication, coping ability, mutual empathy, and perspective-taking in relation to cancer. An online facilitator who is a trained mental health professional will guide and support couples throughout the process. Data collection will occur at baseline, at post-treatment or eight weeks into the waiting period, and at the three-month follow-up assessment. Primary outcome measures include the Revised Dyadic Adjustment Survey (RDAS) and Dyadic Coping Inventory (DCI) scores, and secondary outcome measures include the Hospital Anxiety and Depression Survey (HADS) score. Discussion: Couplelinks is one of the first internet-based psychological interventions to improve the psychosocial adjustment of couples coping with a life-threatening illness such as cancer. If successful, the design of this program as described in this paper makes a valuable contribution to the literature on the delivery of couple-focused psychosocial interventions, both within and outside of oncology. [ABSTRACT FROM AUTHOR]

Background: A large volume of research has been published on both the socio economic and demographic determinants of cancer and on the health of immigrants and minority groups. Yet because of data limitations, little research examines differences in the occurrence of cancer incidence between immigrants and non-immigrants and among immigrants defined by region of birth and time in the host country. In particular it is not known whether a healthy immigrant effect is present for cancer and if so, whether this advantage is lost with additional years of residence in the host country.Methods: This paper uses a large data file from Statistics Canada that links Census information on immigrant status, socioeconomic status including educational attainment, and other person-level information with administrative data on cancer and mortality over a continuous 13 year period of observation. It estimates discrete and continuous time duration models to identify differences in cancer diagnosis by immigrant subgroup after controlling for a variety of potential confounders. Differences in historical smoking behavior are not observable at the individual level in the dataset but are accounted for indirectly using various methods.Results: Results in general confirm the existence of a healthy immigrant effect for cancer in that, overall, recent immigrants to Canada are significantly less likely than otherwise comparable non-immigrant Canadians to be diagnosed with any cancer and the most common forms of cancer by site. As well, this gap appears to decline with additional years in Canada for immigrant men and women, eventually converging to Canadian-born levels. Differentiating among immigrant subgroups by period of arrival and country of birth reveals significant variation across immigrant subgroups, with immigrant men and women from developing countries typically having a lower likelihood of being diagnosed with cancer than immigrants from the US, UK and continental Europe. As well, controlling for immigrant heterogeneity this way weakens the conclusion that the gap narrows with years in Canada. Immigrant men overall continue to exhibit convergence to Canadian-born levels for diagnosis of any cancer and for prostate cancer, while immigrant women exhibit narrowing over time only for breast cancer. Although smoking behavior is not directly observed, controlling for subgroup-specific lifetime smoking behavior using survey data has only a relatively minor effect on the estimated differences.Conclusions: The specificity of the results by cancer type, gender, immigrant status and ethnicity provides useful guidance for future research by helping to narrow the possible channels through which social and economic characteristics may be affecting cancer incidence. [ABSTRACT FROM AUTHOR]

Background: We conducted spatial analyses to determine the geographic variation of cancer at the neighbourhood level (dissemination areas or DAs) within the area of a single Ontario public health unit, Wellington-Dufferin-Guelph, covering a population of 238,326 inhabitants. Cancer incidence data between 1999 and 2003 were obtained from the Ontario Cancer Registry and were geocoded down to the level of DA using the enhanced Postal Code Conversion File. The 2001 Census of Canada provided information on the size and age-sex structure of the population at the DA level, in addition to information about selected census covariates, such as average neighbourhood income. Results: Age standardized incidence ratios for cancer and the prevalence of census covariates were calculated for each of 331 dissemination areas in Wellington-Dufferin-Guelph. The standardized incidence ratios (SIR) for cancer varied dramatically across the dissemination areas. However, application of the Moran's I statistic, a popular index of spatial autocorrelation, suggested significant spatial patterns for only two cancers, lung and prostate, both in males (p < 0.001 and p = 0.002, respectively). Employing Bayesian hierarchical models, areas in the urban core of the City of Guelph had significantly higher SIRs for male lung cancer than the remainder of Wellington-Dufferin-Guelph; and, neighbourhoods in the urban and surrounding rural areas of Orangeville exhibited significantly higher SIRs for prostate cancer. After adjustment for age and spatial dependence, average household income attenuated much of the spatial pattern of lung cancer, but not of prostate cancer. Conclusion: This paper demonstrates the feasibility and utility of a systematic approach to identifying neighbourhoods, within the area served by a public health unit, that have significantly higher risks of cancer. This exploratory, ecologic study suggests several hypotheses for these spatial patterns that warrant further investigations. To the best of our knowledge, this is the first Canadian study published in the peer-reviewed literature estimating the risk of relatively rare public health outcomes at a very small areal level, namely dissemination areas. [ABSTRACT FROM AUTHOR]