Motor vehicle collision-related injuries and deaths among Indigenous Peoples in Canada: Meta-analysis of geo-structural factors

Introduction

Indigenous Peoples are much more likely than non-Indigenous Peoples to be seriously injured or die in motor vehicle collisions (MVCs). This study updates and extends a previous systematic review, suggesting that future research ought to incorporate social-environmental factors.

Methods

We conducted a systematic review and meta-analysis of the published and grey literature on MVCs involving Indigenous Peoples in Canada between 2010 and 2020. We focussed on personal (e.g. driving an old vehicle) and community social-environmental-economic factors (e.g. prevalent low socioeconomic status).

Results

Eleven comparative cohorts that resulted in 23 at minimum, age-standardised, mortality or morbidity rate outcomes were included in our meta-analysis. Indigenous Peoples were twice as likely as non-Indigenous Peoples to be seriously injured (rate ratio [RRpooled] = 2.18) and more than 3 times as likely to die (RR_pooled = 3.40) in MVCs. Such great risks to Indigenous Peoples do not seem to have diminished over the past generation. Furthermore, such risks were greater on-reserves and in smaller, rural and remote, places.

Conclusion

Such places may lack community resources, including fewer transportation and healthcare infrastructural investments, resulting in poorer road conditions in Indigenous communities and longer delays to trauma care. This seems to add further evidence of geo-structural violence (geographical and institutional violence) perpetrated against Indigenous Peoples in yet more structures (i.e. institutions) of Canadian society. Canada's system of highways and roadways and its remote health-care system represent legitimate policy targets in aiming to solve this public health problem.

Unmet Healthcare Need Due to Cost Concerns among U.S. Transgender and Gender-Expansive Adults: Results from a National Survey

This study examines past-year unmet healthcare need due to cost experienced by transgender and gender-expansive (TGE) adults in the United States in the context of the Patient Protection and Affordable Care Act (ACA). It also aims to estimate the importance of having health insurance among TGE Americans (transgender men, transgender women, nonbinary/genderqueer people, and cross-dressers). Data were from the 2015 U.S. Transgender Survey (N = 19,157 adults, aged 25 to 64 years). Multivariable logistic regression models were used to determine the adjusted odds ratios (AOR) and 95 percent confidence intervals (CI) of TGE individuals' past-year unmet healthcare need due to cost. Although the majority (86.8 percent) reported seeing a doctor or healthcare provider in the past year, 32.1 percent reported past-year unmet healthcare need due to cost. One in six respondents (17.1 percent) was uninsured and almost one-third (29.8 percent) were at/near poverty. The prevalence of unmet healthcare need was greater among the uninsured (65.1 percent) than among the insured (25.2 percent). Compared with transgender women, nonbinary/genderqueer people (AOR = 1.31, 95% CI [1.18, 1.46]) and transgender men (AOR = 1.30, 95% CI [1.18, 1.42]) had greater odds of unmet healthcare need due to cost. Social workers can lobby to fully enact the ACA by underscoring affordability and availability as important dimensions of healthcare access for TGE populations.

Chinese enclave protections among married Chinese American women: exploratory secondary analysis of colon cancer survival

Objective: Like the barrio advantage theory related to Mexican Americans, a theory about the protective effects of Chinese American enclaves is developing. Such protections were examined among socioeconomically vulnerable people with colon cancer. Design: A colon cancer cohort established in California between 1995 and 2000, and followed until the enactment of the Affordable Care Act was utilized in this study. Secondary analysis was conducted on the 5-year survival among 127 Chinese Americans and 4524 other Americans (3810 non-Hispanic white and 714 Hispanic people). A third of the original cohort was selected from high poverty neighborhoods. Chinese American enclaves were neighborhoods where typically 25% or more of the residents were Chinese Americans. Effects were tested with Cox regressions and group differences described with age and stage-standardized survival rate ratios (RR). Results: Though they were less adequately insured, Chinese American women residing in Chinese American enclaves (63%) were more likely to survive than were other Americans (50%, RR = 1.26). The protective effect of being married was also larger for Chinese Americans (RR = 1.31) than for others (RR = 1.17). Chinese American women (61%) were more likely than men (46%) to live in such enclaves and a large enclave survival advantage was observed among Chinese American women only (RR = 1.59). Conclusions: There is consistent evidence of the relatively protected status of Chinese American women, particularly those who were married and resided in Chinese American enclaves. Mechanisms that explain their apparent advantages are not yet well understood, though relatively large, kin-based social networks seem instrumental. Research on the influence of social networks as well as the possible effects of acculturation is needed. This study also exposed structural inequities related to the institutions of marriage, health care and communities that disadvantage others. Policy makers ought to be aware of them as future reforms of American health care are considered.

Colon cancer care of Hispanic people in California: Paradoxical barrio protections seem greatest among vulnerable populations

Background: We examined paradoxical and barrio advantaging effects on cancer care among socioeconomically vulnerable Hispanic people in California. Methods: We secondarily analyzed a colon cancer cohort of 3,877 non-Hispanic white (NHW) and 735 Hispanic people treated between 1995 and 2005. A third of the cohort was selected from high poverty neighborhoods. Hispanic enclaves and Mexican American (MA) barrios were neighborhoods where 40% or more of the residents were Hispanic or MA. Key analyses were restricted to high poverty neighborhoods. Results: Hispanic people were more likely to receive chemotherapy (RR=1.18), especially men in Hispanic enclaves (RR=1.33) who were also advantaged on survival (RR=1.20). A survival advantage was also suggested among MA men who resided in barrios (RR=1.80). Conclusions: The findings were supportive of Hispanic paradox and MA barrio advantage theories. They further suggested that such advantages are greater for men, perhaps due to their greater spousal and extended familial support.

Healthcare avoidance due to anticipated discrimination among transgender people: A call to create trans-affirmative environments

Transgender people encounter interpersonal and structural barriers to healthcare access that contribute to their postponement or avoidance of healthcare, which can lead to poor physical and mental health outcomes. Using the 2015 U.S. Transgender Survey, this study examined avoidance of healthcare due to anticipated discrimination among transgender adults aged 25 to 64 (N = 19,157). Multivariable logistic regression analysis was conducted to test whether gender identity/expression, socio-demographic, and transgender-specific factors were associated with healthcare avoidance. Almost one-quarter of the sample (22.8%) avoided healthcare due to anticipated discrimination. Transgender men had increased odds of healthcare avoidance (AOR = 1.32, 95% CI = 1.21–1.45) relative to transgender women. Living in poverty (AOR = 1.52, 95% CI = 1.40–1.65) and visual non-conformity (AOR = 1.48, 95% CI = 1.33–1.66) were significant risk factors. Having health insurance (AOR = 0.87, 95% CI = 0.79–0.96) and disclosure of transgender identity (AOR = 0.77, 95% CI = 0.68–0.87) were protective against healthcare avoidance. A significant interaction of gender identity/expression with health insurance was found; having health insurance moderated the association between gender identity/expression and healthcare avoidance. Providers should consider gender differences, socio-demographic, and transgender-specific factors to improve accessibility of services to transgender communities. A multi-level and multi-faceted approach should be used to create safe, trans-affirmative environments in health systems.

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Transgender people encounter barriers to healthcare access.

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Providers should consider transgender-specific factors to improve healthcare access.

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A multi-faceted approach should be used to create trans-affirmative health settings.

ADVANCE CARE PLANNING AMONG LGBT PEOPLE: AN INTEGRATIVE REVIEW AND ANALYSIS

Lesbian, gay, bisexual, and transgender people (LGBT) with advanced illness need culturally competent advanced care planning (ACP) services but often encounter structural and communication barriers. The aim of this study was to examine the ACP behaviors of LGBT people. An integrative rapid review method was used to search electronic databases for peer reviewed and non-peer reviewed publications between 2010 to 2017. Eight survey instruments comprising 30 prevalence estimates were analyzed. ACP discussions between LGBT people and their primary health care providers were rare, with an overall prevalence of 10%. Transgender people were 50–70% less likely than their LGB counterparts to have a living will or to have appointed a healthcare proxy. These results suggest there is a critical need for greater cultural competency among health care providers serving LGBT populations. Social workers can play a key role in advocacy and social justice for LGBT individuals with advanced illness.

Yoga-Specific Enhancement of Quality of Life Among Women With Breast Cancer: Systematic Review and Exploratory Meta-Analysis of Randomized Controlled Trials

Physical activities during and after cancer treatment have favorable psychosocial effects. Increasingly, yoga has become a popular approach to improving the quality of life (QoL) of women with breast cancer. However, the extant synthetic evidence on yoga has not used other exercise comparison conditions. This meta-analysis aimed to systematically assess yoga-specific effects relative to any other physical exercise intervention (eg, aerobics) for women with breast cancer. QoL was the primary outcome of interest. Eight randomized controlled trials with 545 participants were included. The sample-weighted synthesis at immediate postintervention revealed marginally statistically and modest practically significant differences suggesting yoga’s potentially greater effectiveness: d = 0.14, P = .10. However, at longer term follow-up, no statistically or practically significant between-group difference was observed. This meta-analysis preliminarily demonstrated that yoga is probably as effective as other exercise modalities in improving the QoL of women with breast cancer. Both interventions were associated with clinically significant improvements in QoL. Nearly all of the yoga intervention programs, however, were very poorly resourced. Larger and better controlled trials of well-endowed yoga programs are needed.

Palliative chemotherapy among people living in poverty with metastasised colon cancer: facilitation by primary care and health insurance

BACKGROUND

Many Americans with metastasised colon cancer do not receive indicated palliative chemotherapy. We examined the effects of health insurance and physician supplies on such chemotherapy in California.

METHODS

We analysed registry data for 1199 people with metastasised colon cancer diagnosed between 1996 and 2000 and followed for 1 year. We obtained data on health insurance, census tract-based socioeconomic status and county-level physician supplies. Poor neighbourhoods were oversampled and the criterion was receipt of chemotherapy. Effects were described with rate ratios (RR) and tested with logistic regression models.

RESULTS

Palliative chemotherapy was received by less than half of the participants (45%). Facilitating effects of primary care (RR=1.23) and health insurance (RR=1.14) as well as an impeding effect of specialised care (RR=0.86) were observed. Primary care physician (PCP) supply took precedence. Adjusting for poverty, PCP supply was the only significant and strong predictor of chemotherapy (OR=1.62, 95% CI 1.02 to 2.56). The threshold for this primary care advantage was realised in communities with 8.5 or more PCPs per 10 000 inhabitants. Only 10% of participants lived in such well-supplied communities.

CONCLUSIONS

This study's observations of facilitating effects of primary care and health insurance on palliative chemotherapy for metastasised colon cancer clearly suggested a way to maximise Affordable Care Act (ACA) protections. Strengthening America's system of primary care will probably be the best way to ensure that the ACA's full benefits are realised. Such would go a long way towards facilitating access to palliative care.

Psychosocial Interventions for Emergent Adults With Type 1 Diabetes: Near-Empty Systematic Review and Exploratory Meta-Analysis

Risk for developing mental health concerns is increased for people with diabetes. Coupled with stressors related to the transition from adolescence to adulthood, emergent adults may be in greater need of psychosocial interventions to help them cope. This review summarizes the literature on interventions used with people with diabetes aged 15-30 years on psychosocial and biological (A1C) outcomes. Core databases were searched for both published and grey research. Studies completed between January 1985 and October 2018 using any psychosocial intervention and meeting age and diabetes type requirements were selected if they included a control or comparison group and findings reported in such a way that effect size was calculable. Two authors independently extracted relevant data using standard data extraction templates. Six studies with 450 participants met the broad inclusion criteria. Sample-weighted pooling of 12 outcomes, six each on glycemic control and psychosocial status, suggested the preventive potential (d = 0.31, 95% CI 0.17-0.45) and homogeneity (χ² [11] = 11.15, P = 0.43) of studied interventions. This preliminary meta-analysis provides some suggestion that psychosocial interventions, including telephone-based case management, individualized treatment modules, and small-group counseling interventions, may diminish burden, depression, and anxiety and enhance glycemic control among emerging adults with type 1 diabetes as they transition from adolescence to adulthood.

Care of acute conditions and chronic diseases in Canada and the United States: Rapid systematic review and meta-analysis

This study tested the hypothesis that socioeconomically vulnerable Canadians with diverse acute conditions or chronic diseases have health care access and survival advantages over their counterparts in the USA. A rapid systematic review retrieved 25 studies (34 independent cohorts) published between 2003 and 2018. They were synthesized with a streamlined meta-analysis. Very low-income Canadian patients were consistently and highly advantaged in terms of health care access and survival compared with their counterparts in the USA who lived in poverty and/or were uninsured or underinsured. In aggregate and controlling for specific conditions or diseases and typically 4 to 9 comorbid factors or biomarkers, Canadians' chances of receiving better health care were estimated to be 36% greater than their American counterparts (RR=1.36, 95% CI 1.35-1.37). This estimate was significantly larger than that based on general patient or non-vulnerable population comparisons (RR=1.09, 95% CI 1.08-1.10). Contrary to prevalent political rhetoric, three studies observed that Americans experience more than twice the risk of long waits for breast or colon cancer care or of dying while they wait for an organ transplant (RR=2.36, 95% CI 2.09-2.66). These findings were replicated across externally valid national studies and more internally valid, metropolitan or provincial/state comparisons. Socioeconomically vulnerable Canadians are consistently and highly advantaged on health care access and outcomes compared to their American counterparts. Less vulnerable comparisons found more modest Canadian advantages. The Affordable Care Act ought to be fully supported including the expansion of Medicaid across all states. Canada's single payer system ought to be maintained and strengthened, but not through privatization.

Profound barriers to basic cancer care most notably experienced by uninsured women: Historical note on the present policy considerations

America is considering the replacement of Obamacare with Trumpcare. This historical cohort revisited pre-Obamacare colon cancer care among people living in poverty in California (N = 5,776). It affirmed a gender by health insurance hypothesis on nonreceipt of surgery such that uninsured women were at greater risk than uninsured men. Uninsured women were three times as likely as insured women to be denied access to such basic care. Similar men were two times as likely. America is bound to repeat such profound health care inequities if Obamacare is repealed. Instead, Obamacare ought to be retained and strengthened in all states, red and blue.

End-of-Life Preparations among Lesbian, Gay, Bisexual, and Transgender People: Integrative Review of Prevalent Behaviors

Proactively making end-of-life (EOL) preparations is important to ensure high quality EOL care. Critical to preparation is the discussion of preferences with one's primary health care providers. Lesbian, gay, bisexual, and transgender (LGBT) people often experience discrimination from health care providers that will detrimentally affect their ability to communicate their care preferences. Structural barriers, such as those based on sexual orientation and gender identity, may impede timely and quality care when one is most in need. The aim of this study was to examine the prevalence of EOL preparatory behaviors among LGBT people, with particular focus on transgender individuals. Eight survey instruments with 30 prevalence estimates found in the literature were analyzed. EOL discussions between LGBT people and their primary health care providers were rare (10%). Transgender people were found to be even less prepared for EOL; they were 50-70% less likely than their LGB counterparts to have a will, a living will or to have appointed a healthcare proxy. A need exists for future mixed-methods research focused on LGBT populations accompanied by the cultural sensitivity needed to ensure their wishes are honored at the EOL.

Breast Cancer Care in California and Ontario: Primary Care Protections Greatest Among the Most Socioeconomically Vulnerable Women Living in the Most Underserved Places

BACKGROUND

Better health care among Canada's socioeconomically vulnerable versus America's has not been fully explained. We examined the effects of poverty, health insurance and the supply of primary care physicians on breast cancer care.

METHODS

We analyzed breast cancer data in Ontario (n = 950) and California (n = 6300) between 1996 and 2000 and followed until 2014. We obtained socioeconomic data from censuses, oversampling the poor. We obtained data on the supply of physicians, primary care and specialists. The optimal care criterion was being diagnosed early with node negative disease and received breast conserving surgery followed by adjuvant radiation therapy.

RESULTS

Women in Ontario received more optimal care in communities well supplied by primary care physicians. They were particularly advantaged in the most disadvantaged places: high poverty neighborhoods (rate ratio = 1.65) and communities lacking specialist physicians (rate ratio = 1.33). Canadian advantages were explained by better health insurance coverage and greater primary care access.

CONCLUSIONS

Policy makers ought to ensure that the newly insured are adequately insured. The Medicaid program should be expanded, as intended, across all 50 states. Strengthening America's system of primary care will probably be the best way to ensure that the Affordable Care Act's full benefits are realized.

Gender differences on the interacting effects of marital status and health insurance on long-term colon cancer survival in California, 1995-2014

Objectives

Long-term colon cancer survival is not well explained by main effects. We explored the interaction of age, gender, marital status, health insurance and poverty on 10-year colon cancer survival.

Methods

California registry data were analyzed for 5,776 people diagnosed from 1995 to 2000; followed until 2014. Census data classified neighborhood poverty. We tested interactions with regressions and described them with standardized rates and rate ratios (RR).

Results

The 5-way interaction was significant, suggesting larger 4-way disadvantages among non-Medicare-eligible people. A significant 4-way interaction was a 3-way interaction in non-high poverty neighborhoods only. Private insurance was protective for unmarried men (RR = 1.60) but not women, while it was protective for married women (RR = 1.22) but not men. This pattern seemed explained by lower-incomes of certain groups of unmarried women and married men and more prevalent underinsuring of unmarried men.

Conclusions

Structural inequities related to the institutions of marriage and health care seem to affect women and men quite differently. Policy makers ought to be cognizant of such structural imbalances as future reforms of American health care are considered.

The STAYWELL Program-Maximizing Elders' Capacity for Independent Living Through Health Promotion and Disease Prevention Activities

The STAYWELL Program, an 8-session health promotion/disease prevention pro-gram for older adults, was found to have a significant impact on elder participants' health-related beliefs and behaviors. This quasi-experimental study's 146 participants were recruited from 8 western New York senior citizen centers, and 70% (n = 102) were available for a 9-month follow-up assessment. As compared with elders on a waiting list, study participants who experienced the STAYWELL intervention ex-pressed significantly healthier beliefs and reported behavioral changes indicative of a healthier lifestyle at follow-up. All of the intervention effect sizes observed may be characterized as large to very large: (1) The intervention group expressed healthier beliefs as assessed using the healthy belief index-at follow-up, three quarters of them scored higher on this measure than the average person in the waiting list comparison group (U3 = 77.3%); (2) the intervention group engaged in healthier behaviors as assessed by using the healthy behavior index (U3 = 92.4%); and (3) they also took fewer medications (U3 = 74.2%); all p < .05. Extant cohorts in this field (more than 20,000 elders) may offer collaborative opportunities for needed longer follow-up of health outcome end-points.

The Prevalence of Elder Care Responsibilities among the Work Force Population

This review synthesizes the findings of 17 independent studies dealing with the prevalence of elder care responsibilities among the work force population. Across-study, summative findings were: (a) approximately one fifth (M = 21.1%) to one quarter (Md = 23.1%) of employees provide care for an elderly dependent; primary study findings varied by a factor of nearly 25, ranging from a high estimate of 46.0% to a low of 1.9%; (b) the average response rate was fairly low (M = 45.0% and Md = 41. 1%), indicating that the studies captured only slightly more than one third, but less than half of all eligible in-sample assignments; (c) the correlation of prevalence and response rates was found to be r = -.69, p < .01; (d) the partial correlation of prevalence with response rate, adjusted for the breadth of the elder care operational definition, remained significant, r = -.50, p < .05; and (e) these two methodological characteristics together accounted for half (R2 = .505) of the variability in reported prevalence, response rate accounting for nearly all (95.4%) of this explained criterion variation. Bias due to nonresponse thus represents a potent threat to the validity of the mean prevalence estimate found in this body of research (21.1%). The implementation of statistical controls for nonresponse and definitional inconsistencies resulted in an estimated prevalence of 7.4% to 11.8%; however, this review outcome is tentative at best and must be tested with future, better controlled primary studies.

A Training Needs Assessment Among Managers of Federally Subsidized Housing: Facilitating Support Service Use by Vulnerable Older Tenants

A mail survey of 248 upstate New York subsidized-housing managers explored the issue of housing-managerfacilitation of support service use among vulnerable older tenants. Data were collected pertinent to manager knowledge or perceived ability to facilitate tenant service access and their experience in doing so during the past year. Major findings were as follows: (a) Manager knowledge across a broad range of 25 health care and social services constituting the Manager Service Knowledge Index (MSKI) was low—62.1% scored zero (not knowledgeable or familiar with gaining access to any support services). (b) Manager-facilitated tenant service use, measured across the same services (Tenant Service Utilization Index [TSUI]), was also low—64.5% scored zero (had not facilitated tenant access to any of the 25 services during the past year). (c) A strong association was found between MSKI and TSUI, r = .89. (d) Nearly half (45.9%) of the managers had no previous support service network training, and of those who had, 79.0% found it not helpful in enhancing their practical skill. (e) Manager's primary criticism of prior training experience was its lack of specificity in matching tenant-assessed needs to available services and the procedures employed to access them. Implications for training, policy, and future research are discussed

Facilitating Federally Subsidized Housing Managerial Role Expansion: Beyond "Bricks and Mortar" to Lifespace Intervention With Vulnerable Older Tenants

A mail survey of 95 upstate New York subsidized housing managers examined the issue of managerial role expansion. Data were collected pertinent to the proportion of their time that housing managers spend working with older tenants on support-service-related activities, and the organizational and managerial factors associated with such involvement. Major findings were the following: (a) managers spend a mean of 24.3% of their time on tenant-related tasks, specifically 9.5% on facilitating support service (health care and social services) use by vulnerable older tenants; (b) involvement in this specific service linkage task varied greatly across managers, ranging from 0% to 40.0% of their time; and (c) three predictors entered stepwise multiple linear regression-two organizational (having a written care management policy and a functioning tenant council) and one managerial (having received some service linkage training), together accounting for 40.4% (R2 = .404) of the variability in manager service linkage involvement (19.1, 13.4 and 7.9%, respectively). Implications for policy devel opment to facilitate subsidized housing managerial role expansion are discussed.

Disparities Report: Disparities Among Minority Women With Breast Cancer Living in Impoverished Areas of California

BACKGROUND

Interaction effects of poverty and health care insurance coverage on overall survival rates of breast cancer among women of color and non-Hispanic white women were explored.

METHODS

We analyzed California registry data for 2,024 women of color (black, Hispanic, Asian, Pacific Islander, American Indian, or other ethnicity) and 4,276 non-Hispanic white women (Anglo-European ancestries and no Hispanic-Latin ethnic backgrounds) diagnosed with breast cancer between the years 1996 and 2000 who were then followed until 2011. The 2000 US census categorized rates of neighborhood poverty. Health care insurance coverage was either private, Medicare, Medicaid, or none. Cox regression was used to model rates of survival.

RESULTS

A 3-way interaction between ethnicity, health care insurance coverage, and poverty was observed. Women of color inadequately insured and living in poor or near-poor neighborhoods in California were the most disadvantaged. Women of color adequately insured and who lived in such neighborhoods in California were also disadvantaged. The incomes of such women of color were typically lower than the incomes of non-Hispanic white women.

CONCLUSIONS

Women of color with or without insurance coverage are disadvantaged in poor and near-poor neighborhoods of California. Such women may be less able to bare the indirect, direct, or uncovered costs of health care for breast cancer treatment.

Colon cancer care and survival: income and insurance are more predictive in the USA, community primary care physician supply more so in Canada

BACKGROUND

Our research group advanced a health insurance theory to explain Canada's cancer care advantages over America. The late Barbara Starfield theorized that Canada's greater primary care-orientation also plays a critically protective role. We tested the resultant Starfield-Gorey theory by examining the effects of poverty, health insurance and physician supplies, primary care and specialists, on colon cancer care in Ontario and California.

METHODS

We analyzed registry data for people with non-metastasized colon cancer from Ontario (n = 2,060) and California (n = 4,574) diagnosed between 1996 and 2000 and followed to 2010. We obtained census tract-based socioeconomic data from population censuses and data on county-level physician supplies from national repositories: primary care physicians, gastroenterologists and other specialists. High poverty neighborhoods were oversampled and the criterion was 10 year survival. Hypotheses were explored with standardized rate ratios (RR) and tested with logistic regression models.

RESULTS

Significant inverse associations of poverty (RR = 0.79) and inadequate health insurance (RR = 0.80) with survival were observed in the California, while they were non-significant or non-existent in Ontario. The direct associations of primary care physician (RRs of 1.32 versus 1.11) and gastroenterologist (RRs of 1.56 versus 1.15) supplies with survival were both stronger in Ontario than California. The supply of primary care physicians took precedence. Probably mediated through the initial course of treatment, it largely explained the Canadian advantage.

CONCLUSIONS

Poverty and health insurance were more predictive in the USA, community physician supplies more so in Canada. Canada's primary care protections were greatest among the most socioeconomically vulnerable. The protective effects of Canadian health care prior to enactment of the Affordable Care Act (ACA) clearly suggested the following. Notwithstanding the importance of insuring all, strengthening America's system of primary care will probably be the best way to ensure that the ACA's full benefits are realized. Finally, Canada's strong primary care system ought to be maintained.

Care and survival of Mexican American women with node negative breast cancer: historical cohort evidence of health insurance and barrio advantages

We hypothesized 3-way ethnicity by barrio by health insurance interactions such that the advantages of having adequate health insurance were greatest among Mexican American (MA) women who lived in barrios. Barrios were neighborhoods with relatively high concentrations of MAs (60% or more). Data were analyzed for 194 MA and 2,846 non-Hispanic white women diagnosed with, very treatable, node negative breast cancer in California between 1996 and 2000 and followed until 2011. Significant interactions were observed such that the protective effects of Medicare or private health insurance on radiation therapy access and long term survival were largest for MA women who resided in MA barrios, neighborhoods that also tended to be extremely poor. These paradoxical findings are consistent with the theory that more facilitative social and economic capital available to MA women in barrios enables them to better absorb the indirect and direct, but uncovered, costs of breast cancer care.

Breast Cancer among Women Living in Poverty: Better Care in Canada than in the United States

This historical study estimated the protective effects of a universally accessible, single-payer health care system versus a multi-payer system that leaves many uninsured or underinsured by comparing breast cancer care of women living in high poverty neighborhoods in Ontario or California between 1996 and 2011. Women in Canada experienced better care particularly as compared to women who were inadequately insured in the United States. Women in Canada were diagnosed earlier (rate ratio [RR] = 1.12) and enjoyed better access to breast conserving surgery (RR = 1.48), radiation (RR = 1.60) and hormone therapies (RR = 1.78). Women living in high poverty Canadian neighborhoods even experienced shorter waits for surgery (RR = 0.58) and radiation therapy (RR = 0.44) than did such women in the US. Consequently, women in Canada were much more likely to survive longer. Regression analyses indicated that health insurance could explain most of the better care and better outcomes in Canada. Over this study's 15-year timeframe 31,500 late diagnoses, 94,500 sub-optimum treatment plans and 103,500 early deaths were estimated in high poverty US neighborhoods due to relatively inadequate health insurance coverage. Implications for social work practice, including advocacy for future reforms of US health care are discussed.

Multiplicative disadvantage of being an unmarried and inadequately insured woman living in poverty with colon cancer: historical cohort exploration in California

BACKGROUND

Many Americans diagnosed with colon cancer do not receive indicated chemotherapy. Certain unmarried women may be particularly disadvantaged. A 3-way interaction of the multiplicative disadvantages of being an unmarried and inadequately insured woman living in poverty was explored.

METHODS

California registry data were analyzed for 2,319 women diagnosed with stage II to IV colon cancer between 1996 and 2000 and followed until 2014. Socioeconomic data from the 2000 census classified neighborhoods as high poverty (≥30% of households poor), middle (5-29%) or low poverty (<5% poor). Primary health insurance was private, Medicare, Medicaid or none. Comparisons of chemotherapy rates used standardized rate ratios (RR). We respectively used logistic and Cox regression models to assess chemotherapy and survival.

RESULTS

A statistically significant 3-way marital status by health insurance by poverty interaction effect on chemotherapy receipt was observed. Chemotherapy rates did not differ between unmarried (39.0%) and married (39.7%) women who lived in lower poverty neighborhoods and were privately insured. But unmarried women (27.3%) were 26% less likely to receive chemotherapy than were married women (37.1%, RR = 0.74, 95% CI 0.58, 0.95) who lived in high poverty neighborhoods and were publicly insured or uninsured. When this interaction and the main effects of health insurance, poverty and chemotherapy were accounted for, survival did not differ by marital status.

CONCLUSIONS

The multiplicative barrier to colon cancer care that results from being inadequately insured and living in poverty is worse for unmarried than married women. Poverty is more prevalent among unmarried women and they have fewer assets so they are probably less able to absorb the indirect and direct, but uncovered, costs of colon cancer care. There seem to be structural inequities related to the institutions of marriage, work and health care that particularly disadvantage unmarried women that policy makers ought to be cognizant of as future reforms of the American health care system are considered.

Lack of access to chemotherapy for colon cancer: multiplicative disadvantage of being extremely poor, inadequately insured and African American

Background

Despite evidence of chemotherapy’s ability to cure or comfort those with colon cancer, nearly half of such Americans do not receive it. African Americans (AA) seem particularly disadvantaged. An ethnicity by poverty by health insurance interaction was hypothesized such that the multiplicative disadvantage of being extremely poor and inadequately insured is worse for AAs than for non-Hispanic white Americans (NHWA).

Methods

California registry data were analyzed for 459 AAs and 3,001 NHWAs diagnosed with stage II to IV colon cancer between 1996 and 2000 and followed until 2011. Socioeconomic data from the 2000 census categorized neighborhoods: extremely poor (≥ 30% of households poor), middle (5-29% poor) and low poverty (< 5% poor). Participants were randomly selected from these poverty strata. Primary health insurers were Medicaid, Medicare, private or none. Chemotherapy rates were age and stage-adjusted and comparisons used standardized rate ratios (RR). Logistic and Cox regressions, respectively, modeled chemotherapy receipt and long term survival.

Results

A significant 3-way ethnicity by poverty by health insurance interaction effect on chemotherapy receipt was observed. Among those who did not live in extremely poor neighborhoods and were adequately insured privately or by Medicare, chemotherapy rates did not differ significantly between AAs (37.7%) and NHWAs (39.5%). Among those who lived in extremely poor neighborhoods and were inadequately insured by Medicaid or uninsured, AAs (14.6%) were nearly 60% less likely to receive chemotherapy than were NHWAs (25.5%, RR = 0.41). When the 3-way interaction effect as well as the main effects of poverty, health insurance and chemotherapy was accounted for, survival rates of AAs and NHWAs were the same.

Conclusions

The multiplicative barrier to colon cancer care that results from being extremely poor and inadequately insured is worse for AAs than it is for NHWAs. AAs are more prevalently poor, inadequately insured, and have fewer assets so they are probably less able to absorb the indirect and direct, but uncovered, costs of colon cancer care. Policy makers ought to be cognizant of these factors as they implement the Affordable Care Act and consider future health care reforms.

Health insurance mediation of the Mexican American non-Hispanic white disparity on early breast cancer diagnosis

We examined health insurance mediation of the Mexican American (MA) non-Hispanic white (NHW) disparity on early breast cancer diagnosis. Based on social capital and barrio advantage theories, we hypothesized a 3-way ethnicity by poverty by health insurance interaction, that is, that 2-way poverty by health insurance interaction effects would differ between ethnic groups. We secondarily analyzed registry data for 303 MA and 3,611 NHW women diagnosed with breast cancer between 1996 and 2000 who were originally followed until 2011. Predictors of early, node negative (NN) disease at diagnosis were analyzed. Socioeconomic data were obtained from the 2000 census to categorize neighborhood poverty: high (30% or more of the census tract households were poor), middle (5% to 29% poor) and low (less than 5% poor). Barrios were neighborhoods where 50% or more of the residents were MA. Primary health insurers were Medicaid, Medicare, private or none. MA women were 13% less likely to be diagnosed early with NN disease (RR = 0.87), but this MA-NHW disparity was completely mediated by the main and interacting effects of health insurance. Advantages of health insurance were largest in low poverty neighborhoods among NHW women (RR = 1.20) while among MA women they were, paradoxically, largest in high poverty, MA barrios (RR = 1.45). Advantages of being privately insured were observed for all. Medicare seemed additionally instrumental for NHW women and Medicaid for MA women. These findings are consistent with the theory that more facilitative social and economic capital is available to MA women in barrios and to NHW women in more affluent neighborhoods. It is there that each respective group of women is probably best able to absorb the indirect and direct, but uncovered, costs of breast cancer screening and diagnosis.

Association of diagnostic delay with impairment severity among institutional care facility residents diagnosed with dementia in Ontario, Canada

AIM

To compare the levels of cognitive function at the time of diagnosis among institutional care facility residents with dementia, who were diagnosed either before or after admission to a facility in Ontario, Canada.

METHODS

The study utilized a population-based secondary data analysis approach, using data from the Canadian Institute for Health Information's Continuing Care Reporting System from 2009 to 2011. Cognitive function within 30 days of diagnosis was measured by a seven-point cognitive performance scale (CPS) - 0 (intact) to 6 (very severe impairment).

RESULTS

Data were extracted from 39633 institutional care facility residents who had a diagnosis of dementia on record. The average CPS score was higher for residents whose diagnosis was made after admission to a facility than for residents whose diagnosis was made before admission (3.1 vs 2.9, P=0.009). The proportion of diagnosis at CPS ≥ 4 (moderately severe to very severe impairment) was also higher in the diagnosis after admission group (29.7% vs 24.6%, P=0.001). Multivariable analysis showed that diagnoses made after admission were more likely to be at a severe stage of cognitive decline (CPS ≥ 4) than diagnoses made before admission (adjusted odds ratio 1.49, P=0.001). A similar result was also noted when comparison was made between mild and moderate-to-severe stages of cognitive decline. After admission diagnoses were more likely to be at moderate-to-severe stages of cognitive decline (CPS ≥ 3) than before admission diagnoses (adjusted odds ratio 1.70, P=0.001).

CONCLUSION

Our findings suggest that dementia diagnoses after admission to institutional care facilities are more likely to be made at poorer stages of cognitive function decline.

Better colon cancer care for extremely poor Canadian women compared with American women

Extremely poor Canadian women were recently observed to be largely advantaged on most aspects of breast cancer care as compared with similarly poor, but much less adequately insured, women in the United States. This historical study systematically replicated the protective effects of single- versus multipayer health care by comparing colon cancer care among cohorts of extremely poor women in California and Ontario between 1996 and 2011. The Canadian women were again observed to have been largely advantaged. They were more likely to have received indicated surgery and chemotherapy, and their wait times for care were significantly shorter. Consequently, the Canadian women were much more likely to experience longer survival times. Regression analyses indicated that health insurance nearly completely explained the Canadian advantages. Implications for contemporary and future reforms of U.S. health care are discussed.

Prevalence and correlates of potentially undetected dementia among residents of institutional care facilities in Ontario, Canada, 2009-2011

OBJECTIVES

This study aims to determine the prevalence of potentially undetected dementia among institutional care facility residents in Ontario, Canada, and to identify factors associated with undetection.

METHODS

We utilized a population-based secondary data analysis approach, pertaining to data from the Canadian Institute for Health Information's Continuing Care Reporting System, 2009-2011. Potentially undetected dementia was defined as having severely impaired cognitive function and requiring extensive assistance on activity of daily living (ADL) but no records of dementia diagnoses. Cognitive function was measured by the Cognitive Performance Scale (CPS), 0 (intact) to 6 (very severe impairment), and ADL by a hierarchy scale, 0 (independent) to 6 (total dependence).

RESULTS

Of the 242,957 residents who had no records of dementia diagnoses, 11.6% (n = 28,078) had a CPS score ≥4 (severe impairment or higher) and ADL score ≥3 (required extensive assistance or more). Data from 11,614 demented residents with corresponding CPS and ADL scores were used for comparison. Residents without dementia diagnosis were younger (77 vs. 84 years), more likely to have never married (20% vs. 6%), and have longer admission (4 vs. 2.8 years). The most significant factors for no diagnoses were never married (adjusted odds ratio = 2.1, 95% confidence interval [CI] = 1.91-2.29), admitted to hospital-based facilities (adjusted odds ratio = 1.58, 95% CI = 1.48-1.69), presence of schizophrenia (adjusted odds ratio = 1.43, 95% CI = 1.22-1.69), depression (adjusted odds ratio = 1.23, 95% CI = 1.16-1.29), and diabetes mellitus (adjusted odds ratio = 1.32, 95% CI = 1.26-1.40).

CONCLUSIONS

A large number of residents who had poor cognitive function and inadequate ADL ability did not have dementia diagnoses on record. Social and comorbid conditions were contributing factors to potentially undetected dementia.

Mediation of the effects of living in extremely poor neighborhoods by health insurance: breast cancer care and survival in California, 1996 to 2011

BACKGROUND

We examined the mediating effect of health insurance on poverty-breast cancer care and survival relationships and the moderating effect of poverty on health insurance-breast cancer care and survival relationships in California.

METHODS

Registry data for 6,300 women with breast cancer diagnosed between 1996 and 2000 and followed until 2011 on stage at diagnosis, surgeries, adjuvant treatments and survival were analyzed. Socioeconomic data were obtained for residences from the 2000 census to categorize neighborhoods: high poverty (30% or more poor), middle poverty (5%-29% poor) and low poverty (less than 5% poor). Primary payers or health insurers were Medicaid, Medicare, private or uninsured.

RESULTS

Evidence of survival mediation was observed for women with node negative breast cancer. The apparent effect of poverty disappeared in the presence of Medicare or private health insurance. Women who were so insured were advantaged on 8-year survival compared to the uninsured or those insured by Medicaid (OR = 1.89). Evidence of payer moderation by poverty was also observed for women with node negative breast cancer. The survival advantaging effect of Medicare or private insurance was stronger in low poverty (OR = 1.81) than it was in middle poverty (OR = 1.57) or in high poverty neighborhoods (OR = 1.16). This same pattern of mediated and moderated effects was also observed for early stage at diagnosis, shorter waits for adjuvant radiation therapy and for the receipt of sentinel lymph node biopsies. These findings are consistent with the theory that more facilitative social and economic capital is available in low poverty neighborhoods, where women with breast cancer may be better able to absorb the indirect and direct, but uncovered, costs of care. As for treatments, main protective effects as well as moderator effects indicative of protection, particularly in high poverty neighborhoods were observed for women with private health insurance.

CONCLUSIONS

America's multi-tiered health insurance system mediates the quality of breast cancer care. The system is inequitable and unjust as it advantages the well insured and the well to do. Recent health care reforms ought to be enacted in ways that are consistent with their federal legislative intent, that high quality health care be truly available to all.

Effects of being uninsured or underinsured and living in extremely poor neighborhoods on colon cancer care and survival in California: historical cohort analysis, 1996-2011

Background

We examined the mediating effects of health insurance on poverty-colon cancer care and survival relationships and the moderating effects of poverty on health insurance-colon cancer care and survival relationships among women and men in California.

Methods

We analyzed registry data for 3,291 women and 3,009 men diagnosed with colon cancer between 1996 and 2000 and followed until 2011 on lymph node investigation, stage at diagnosis, surgery, chemotherapy, wait times and survival. We obtained socioeconomic data for individual residences from the 2000 census to categorize the following neighborhoods: high poverty (30% or more poor), middle poverty (5-29% poor) and low poverty (less than 5% poor). Primary health insurers were Medicaid, Medicare, private or none.

Results

Evidence of mediation was observed for women, but not for men. For women, the apparent effect of poverty disappeared in the presence of payer, and the effects of all forms of health insurance seemed strengthened. All were advantaged on 6-year survival compared to the uninsured: Medicaid (RR = 1.83), Medicare (RR = 1.92) and private (RR = 1.83). Evidence of moderation was also only observed for women. The effects of all forms of health insurance were stronger for women in low poverty neighborhoods: Medicaid (RR = 2.90), Medicare (RR = 2.91) and private (RR = 2.60). For men, only main effects of poverty and payers were observed, the advantaging effect of private insurance being largest. Across colon cancer care processes, Medicare seemed most instrumental for women, private payers for men.

Conclusions

Health insurance substantially mediates the quality of colon cancer care and poverty seems to make the effects of being uninsured or underinsured even worse, especially among women in the United States. These findings are consistent with the theory that more facilitative social and economic capital is available in more affluent neighborhoods, where women with colon cancer may be better able to absorb the indirect and direct, but uncovered, costs of care.

A geographical analysis of breast cancer clustering in southern Ontario: generating hypotheses on environmental influences

This article presents the results of spatial analysis of breast cancer clustering in southern Ontario. Data from the Cancer Care Ontario were analyzed using the Scan Statistic at the level of county, with further analysis conducted within counties that were identified as primary clusters at the dissemination area level. The results identified five counties as primary clusters of women diagnosed with breast cancer between 1986 and 2002: Essex (relative risk [RR] =1.096-1.061; p<0.001), Lambton (RR=1.05-1.167), Chatham-Kent (RR=1.133-1.191), Niagara (RR=1.228-1.290) and Toronto (RR=1.152-1.146). The within county analysis revealed several DAs with significantly higher (RR>3, p<0.05) rates of breast cancer, and supports our hypothesis that breast cancer risk in southern Ontario may be associated with industrial and environmental (such as pesticides) pollutants. Further research is needed to verify the environmental links within the identified clusters.

Air pollution and general practitioner access and utilization: a population based study in Sarnia, 'Chemical Valley,' Ontario

BACKGROUND

Health impacts of poor environmental quality have been identified in studies around the world and in Canada. While many of the studies have identified associations between air pollution and mortality or morbidity, few have focused on the role of health care as a potential moderator of impacts. This study assessed the determinants of health care access and utilization in the context of ambient air pollution in Sarnia, Ontario, Canada.

METHODS

Residents of Sarnia participated in a Community Health Study administered by phone, while several ambient air pollutants including nitrogen dioxide (NO2), sulphur dioxide (SO2) and the volatile organic compounds benzene, toluene, ethylbenzene, mp- and o-xylene (BTEX) were monitored across the city. Land Use Regression models were used to estimate individual exposures to the measured pollutants and logistic regression models were utilized to assess the relative influence of environmental, socioeconomic and health related covariates on general practitioner access and utilization outcomes.

RESULTS

The results show that general practitioner use increased with levels of exposure to nitrogen dioxide (NO2- Odds Ratio [OR]: 1.16, p < 0.05) and sulphur dioxide (SO2- OR: 1.61, p < 0.05). Low household income was a stronger predictor of having no family doctor in areas exposed to high concentrations of NO2 and SO2. Respondents without regular care living in high pollution areas were also more likely to report travelling or waiting for care in excess of 20 minutes (OR: 3.28, p < 0.05) than their low exposure counterparts (OR: 1.11, p > 0.05).

CONCLUSIONS

This study provides evidence for inequitable health care access and utilization in Sarnia, with particular relevance to its situation as a sentinel high exposure environment. Levels of exposure to pollution appears to influence utilization of health care services, but poor access to primary health care services additionally burden certain groups in Sarnia, Ontario, Canada.

Associations of physician supplies with colon cancer care in Ontario and California, 1996 to 2006

BACKGROUND

This study examined the differential effects of physician supplies on colon cancer care in Ontario and California. The associations of physician supplies with colon cancer stage at diagnosis, receipt of surgery and adjuvant chemotherapy, and 5-year survival were observed within each country and compared between-country.

METHODS

Random samples of Ontario and California cancer registries provided 2,461 and 2,200 colon cancer cases that were diagnosed between 1996 and 2000, and followed until 2006. Both registries included data on the stage of disease at the time of diagnosis, receipt of cancer-directed surgery, receipt of adjuvant chemotherapy, and survival. Census tract-level data on low-income prevalence were, respectively, taken from 2001 and 2000 Canadian and United States population censuses. County-level primary care physician and gastroenterologist densities were computed for the same years.

RESULTS

Significant income-adjusted, gastroenterologist density threshold effects (2.0 or more vs. less than 2.0 per 100,000 inhabitants) were observed for early diagnosis (OR = 1.57) and 5-year survival (OR = 1.63) in Ontario, but not in California. Significant incremental threshold effects of primary care physician densities on chemotherapy receipt (8.0 and 9.0 or more per 10,000 inhabitants, respective ORs of 1.79 and 2.37) were also only observed in Ontario.

CONCLUSIONS

These colon cancer care findings support the theory that while personal economic resources are more predictive in America, community-level resources such as physician supplies are more predictive of health care access and effectiveness in Canada.

The supply of physicians and care for breast cancer in Ontario and California, 1998 to 2006

INTRODUCTION

We examined the differential effects of the supply of physicians on care for breast cancer in Ontario and California. We then used criteria for optimum care for breast cancer to estimate the regional needs for the supply of physicians.

METHODS

Ontario and California registries provided 951 and 984 instances of breast cancer diagnosed between 1998 and 2000 and followed until 2006. These cohorts were joined with the supply of county-level primary care physicians (PCPs) and specialists in cancer care and compared on care for breast cancer.

RESULTS

Significant protective PCP thresholds (7.75 to = 8.25 PCPs per 10 000 inhabitants) were observed for breast cancer diagnosis (odds ratio [OR] 1.62), receipt of adjuvant radiotherapy (OR 1.64) and 5-year survival (OR 1.87) in Ontario, but not in California. The number of physicians seemed adequate to optimize care for breast cancer across diverse places in California and in most Ontario locations. However, there was an estimated need for 550 more PCPs and 200 more obstetrician-gynecologists in Ontario's rural and small urban areas. We estimated gross physician surpluses for Ontario's 2 largest cities.

CONCLUSION

Policies are needed to functionally redistribute primary care and specialist physicians. Merely increasing the supply of physicians is unlikely to positively affect the health of Ontarians.

Income and long-term breast cancer survival: comparisons of vulnerable urban places in Ontario and California

Effects of socioeconomic status on the long-term survival of 808 women with node-negative breast cancer in Canada and the United States were observed. Ontario and California samples diagnosed between 1988 and 1990 were followed until 2006. Socioeconomic data were taken from population censuses. Compared with their California counterparts, residents of low-income urban areas in Ontario experienced a significant 15-year survival advantage (RR = 1.66 [95% CI: 1.00, 2.76]). In these and other vulnerable, lower-middle- to working-class neighborhoods, significantly more Ontario residents gained access to adjuvant radiation therapy (RR = 1.75 [1.21, 2.53]) which seemed associated with better long-term survival (RR = 1.36 [0.99, 1.86]). This stage-adjusted, historical cohort analysis suggests much greater cancer care equity in Canada than in the United States.

Effects of socioeconomic status on colon cancer treatment accessibility and survival in Toronto, Ontario, and San Francisco, California, 1996-2006

OBJECTIVES

We examined the differential effects of socioeconomic status on colon cancer care and survival in Toronto, Ontario, Canada, and San Francisco, California.

METHODS

We analyzed registry data for colon cancer patients from Ontario (n = 930) and California (n = 1014), diagnosed between 1996 and 2000 and followed until 2006, on stage, surgery, adjuvant chemotherapy, and survival. We obtained socioeconomic data for individuals' residences from population censuses.

RESULTS

Income was directly associated with lymph node evaluation, chemotherapy, and survival in San Francisco but not in Toronto. High-income persons had better survival rates in San Francisco than in Toronto. After adjustment for stage, survival was better for low-income residents of Toronto than for those of San Francisco. Middle- to low-income patients were more likely to receive indicated chemotherapy in Toronto than in San Francisco.

CONCLUSIONS

Socioeconomic factors appear to mediate colon cancer care in urban areas of the United States but not in Canada. Improvements are needed in screening, diagnostic investigations, and treatment access among low-income Americans.

Breast cancer care in the Canada and the United States: ecological comparisons of extremely impoverished and affluent urban neighborhoods

This study examined the differential effect of extreme impoverishment on breast cancer care in urban Canada and the United States. Ontario and California registry-based samples diagnosed between 1998 and 2000 were followed until 2006. Extremely poor and affluent neighborhoods were compared. Poverty was associated with non-localized disease, surgical and radiation therapy (RT) waits, non-receipt of breast conserving surgery, RT and hormonal therapy, and shorter survival in California, but not in Ontario. Extremely poor Ontario women were consistently advantaged on care indices over their California counterparts. More inclusive health insurance coverage in Canada seems the most plausible explanation for such Canadian breast cancer care advantages.

Comprehensive School Reform: Meta-Analytic Evidence of Black-White Achievement Gap Narrowing

This meta-analysis extends a previous review of the achievement effects of comprehensive school reform (CSR) programs (Borman, Hewes, Overman, & Brown, 2003). That meta-analysis observed significant effects of well endowed and well-researched programs, but it did not account for race/ethnicity. This article synthesizes 34 cohort or quasi-experimental outcomes of studies that incorporated the policy-critical characteristic of race/ethnicity.

FINDINGS

compared with matched traditional schools, the black-white achievement gap narrowed significantly more among students in CSR schools. In addition, the aggregate effects were large, substantially to completely eliminating the achievement gap between African American and non-Hispanic white students in elementary and middle schools. Title I policies before or after the No Child Left Behind Act of 2001 seem to have had essentially no impact on the black-white achievement gap. Curricular and testing mandates along with the threat of sanctions without concomitant resource supports seem to have failed. This study suggests that educational achievement inequities need not be America's destiny. It seems that they could be eliminated through concerted political will and ample resource commitments to evidence-based educational programs.

Associations of physician supplies with breast cancer stage at diagnosis and survival in Ontario, 1988 to 2006

BACKGROUND

The authors examined whether the supply of primary care physicians had protective effects on breast cancer stage and survival in Ontario and whether supply losses during the 1990s were associated with diminished protection.

METHODS

Random samples of the Ontario Cancer Registry, respectively, provided 879 women and 951 women who were diagnosed with breast cancer between 1988 and 1990 (followed until 1996) and 1998 and 2000 (followed until 2006), respectively. Active physician supply data (1991 and 2001) joined to each woman's census division of residence was taken from the Scott's Medical Database.

RESULTS

Protective thresholds were observed among the earlier cohort for supplies of general practitioners (7 per 10,000 population) and supplies of obstetricians/gynecologists (6 per 100,000 population) at or above which women with breast cancer were significantly more likely to have been diagnosed with localized disease and to have survived for >or=5 years. These protective effects seemed generally attenuated among the more recent cohort. The risk of living in primary care physician-undersupplied areas increased significantly between 1991 and 2001 (10%-30%), and such physician supply losses were associated with reduced cancer care protection, including less prevalent early diagnoses (odds ratio [OR], 1.60; 95% confidence interval [95% CI], 1.00-2.58) and lower 5-year survival rates (OR, 1.62; 95% CI, 1.03-2.55).

CONCLUSIONS

Primary care physician supplies appeared to matter very much in the effective provision of cancer care in Canada. Community healthcare service endowments that include adequate physician supplies may be particularly critical to the performance of a healthcare system such as that in Canada, which provides universal accessibility to medically necessary care.

Wait times for surgical and adjuvant radiation treatment of breast cancer in Canada and the United States: greater socioeconomic inequity in America

PURPOSE

The demand for cancer care has increased among aging North American populations as cancer treatment innovations have proliferated. Gaps between supply and demand may be growing. This study examined whether socioeconomic status has a differential effect on waits for surgical and adjuvant radiation treatment (RT) of breast cancer in Canada and the US.

METHODS

Ontario and California cancer registries provided 929 and 984 breast cancer cases diagnosed between 1998 and 2000 in diverse urban and rural places. Residence-based socioeconomic data were taken from censuses. Cancer care variables were reliably abstracted from health records: stage, receipt of surgery and RT, and waits from diagnosis to initial and initial to adjuvant treatment. Median waits were compared within- and between-country with the non-parametric Mann-Whitney U-test. Categorically long, age-adjusted wait comparisons used the Mantel-Haenszel chi-square test.

RESULTS

There were significant associations between lower socioeconomic status and longer surgical waits, lower access to adjuvant RT and to longer RT waits across diverse places in California. None were observed in Ontario. The two cohorts did not practically differ on access to surgery or on surgical waits. Compared with their counterparts in California, low-income Ontarians, particularly those in small urban places, gained greater access to RT, while high-income Americans had shorter waits for RT.

CONCLUSIONS

This historical study contextualized Canada's "waiting-list problems" with evidence on breast cancer care, where lower income Americans seemed to have waited as long as similar Canadians. Many more low-income Americans seemed to experience the longest wait of all for adjuvant care. They simply did not receive it. In contrast to stark American socioeconomic inequity, this study evidenced remarkable equity in Canadian breast cancer care.

Breast cancer survival in ontario and california, 1998-2006: socioeconomic inequity remains much greater in the United States

This study re-examined the differential effect of socioeconomic status on the survival of women with breast cancer in Canada and the United States. Ontario and California cancer registries provided 1,913 cases from urban and rural places. Stage-adjusted cohorts (1998-2000) were followed until 2006. Socioeconomic data were taken from population censuses. SES-survival associations were observed in California, but not in Ontario, and Canadian survival advantages in low-income areas were replicated. A better controlled and updated comparison reaffirmed the equity advantage of Canadian health care.

Breast cancer survival in Canada and the USA: meta-analytic evidence of a Canadian advantage in low-income areas

BACKGROUND

This study tested the hypothesis that relatively poor Canadian women with breast cancer have a survival advantage over their counterparts in the USA.

METHODS

Seventy-eight independent retrospective cohort (incidence between 1984 and 2000, followed until 2006) outcomes were synthesized. Fixed effects meta-regression models compared women with breast cancer in low-income areas of Canada and the USA.

RESULTS

Low-income Canadian women were advantaged on survival [rate ratio (RR) = 1.14; 95% confidence interval (CI) 1.13-1.15] and their advantage was even larger among women <65 years of age who are not yet eligible for Medicare coverage in the USA (RR = 1.21, 95% CI 1.18-1.24). Canadian advantages were also larger for node positive breast cancer, which may present with greater clinical and managerial discretion (RR = 1.40, 95% CI 1.30-1.50), and smaller when Hawaii, the state providing the most Canadian-like access, was the US comparator (RR = 1.12, 95% CI 1.01-1.20).

CONCLUSIONS

More inclusive health care insurance coverage in Canada vs the USA, particularly among each country's relatively poor people, seems the most plausible explanation for such Canadian advantages. Provision of health care for all Americans would likely prevent countless early deaths, particularly among the relatively poor.

A meta-analysis examining the relations among pathological gambling, obsessive-compulsive disorder, and obsessive-compulsive traits

Pathological gambling has been proposed to belong to the obsessive-compulsive spectrum of disorders. Disorders on this spectrum are thought to share similar clinical features, neurobiology, and responses to treatment as Obsessive-Compulsive Disorder. A total of 18 studies were included in a meta-analysis to assess the strength of the association between these disorders. A strong relationship (effect size = 1.01) was found between pathological gambling and obsessive-compulsive traits. A weak relationship was found between pathological gambling and Obsessive-Compulsive Disorder (.07) and Obsessive-Compulsive Personality Disorder (effect size = .23). These results suggest pathological gambling and Obsessive-Compulsive Disorder are distinct disorders. However, pathological gamblers do appear to show high rates of obsessive-compulsive traits relative to controls. These findings are only moderately supportive of the inclusion of pathological gambling within the obsessive-compulsive spectrum of conditions.

Welfare-to-Work Programs in America, 1980 to 2005: Meta-Analytic Evidence of the Importance of Job and Child Care Availability

This meta-analysis extended a Campbell Collaboration review of welfare-to-work programs. Its synthesis of 65 randomized trials in America over the past generation replicated a small overall intervention effect. Moreover, it found (1) there was no long-term employment effect of interventions in areas where jobs were relatively unavailable, and (2) programs that provided child care were more effective than those that did not in the short and long term, even in areas of high labor market withdrawal. The availability of jobs as well as such supports as child care that enable their access seem to be key elements of welfare-to-work programs that work.

Group work with female survivors of childhood sexual abuse: evidence of poorer outcomes among those with eating disorders

OBJECTIVE

This study explored levels of depression and self-esteem after childhood sexual abuse (CSA) group treatment for survivors with and without histories of eating disorders (ED).

METHODS

Fifty adult female survivors completed a 15-week CSA group treatment program and were assessed at intake, pre-group treatment, discharge, and six months follow-up using the Beck Depression Inventory, the Generalized Contentment Scale and the Index of Self-Esteem. They were also asked to report on their CSA histories and comorbid psychiatric issues including histories of ED.

RESULTS

Survivors with reported histories of anorexia nervosa or bulimia nervosa were significantly more depressed (minimum p<.05) and tended to have significantly less self-esteem (minimum p<.10) at discharge and six-month follow-up than those without ED. The size of these effects suggested their potential clinical significance as well. Seven to nine of every ten clients with histories of ED were more depressed and had lower self-esteem than the typical client without ED at discharge and at six-month follow-up.

CONCLUSION

The findings suggest that CSA treatment programs should assess survivors for ED as they might benefit from a more specialized focus on their emotional responses to the abuse.

Impact of air pollution on hospital admissions in Southwestern Ontario, Canada: generating hypotheses in sentinel high-exposure places

BACKGROUND

Southwestern Ontario (SWO) in Canada has been known as a 'hot spot' in terms of environmental exposure and potential effects. We chose to study 3 major cities in SWO in this paper. We compared age-standardized hospital admission ratios of Sarnia and Windsor to London, and to generate hypotheses about potential pollutant-induced health effects in the 'Chemical Valley', Sarnia.

METHODS

The number of daily hospital admissions was obtained from all hospitals in London, Windsor and Sarnia from January 1, 1996 to December 31, 2000. We used indirect age adjustment method to obtain standardized admissions ratios for males and females and we chose London as the reference population. This process of adjustment was to apply the age-specific admission rates of London to the population of Sarnia and Windsor in order to yield expected admissions. The observed number of admissions was then compared to the expected admissions in terms of a ratio. These standardized admissions ratios and their corresponding confidence intervals were calculated for Sarnia and Windsor.

RESULTS

Our findings showed that Sarnia and Windsor had significantly higher age-adjusted hospital admissions rates compared to London. This finding was true for all admissions, and especially pronounced for cardiovascular and respiratory admissions. For example, in 1996, the observed number of admissions in Sarnia was 3.11 (CI: 2.80, 3.44) times for females and 2.83 (CI: 2.54, 3.14) times for males as would be expected by using London's admission rates.

CONCLUSION

Since hospital admissions rates were significantly higher in 'Chemical Valley' as compared to both London and Windsor, we hypothesize that these higher rates are pollution related. A critical look at the way ambient air quality and other pollutants are monitored in this area is warranted. Further epidemiological research is needed to verify our preliminary indications of harmful effects in people living in 'Chemical Valley'.

Cancer and construction: what occupational histories in a Canadian community reveal

From 2000 to 2002, male patients at a Canadian cancer treatment center with new-incident head-and-neck or esophageal cancers were invited to participate in a population-based study. The study population included 87 cases and 172 controls. A lifetime-history questionnaire was administered. Odds ratios (ORs) were calculated for occupational groups with a minimum of five cases, adjusted for duration of employment, age, smoking, alcohol, education, and income. A significantly increased risk was shown for construction workers (OR = 2.20; 95% CI 1.25-3.91). This investigation of a set of rare cancers over a limited time period demonstrates the feasibility of this research approach. The increased risk among construction workers supports the need for more comprehensive study of exposures in this occupational group.