Access to colorectal cancer screening for Pakistani immigrants in Norway - a qualitative study

BACKGROUND

The Norwegian colorectal cancer (CRC) screening program started in May 2022. Inequalities in CRC screening participation are a challenge, and we expect that certain groups, such as immigrants, are at risk of non-participation. Prior to the start of the national screening program, a pilot study showed lower participation rates in CRC screening among immigrants from Pakistan. These immigrants are a populous group with a long history in Norway and yet have a relatively low participation rate also in other cancer screening programs. The purpose of this study was to identify and explore perspectives and factors influencing CRC screening participation among immigrants from Pakistan in Norway.

MATERIALS AND METHODS

In this study we used a qualitative study design and conducted 12 individual interviews with Pakistani immigrants aged between 50 and 65 years. The participants varied in terms of gender, age, education, work, residence time in Norway and familiarity with the Norwegian language and culture. We performed thematic analysis with health literacy as a theoretical framework to understand Pakistani immigrants' perspectives on CRC screening.

RESULTS

We identified four main themes: Health-related knowledge, the health care system, screening, and social factors. Within these themes we identified several factors that affect Pakistani immigrants' accessibility to CRC screening. These factors included knowledge of the causes and development of cancer, sources of health-related information, the general practitioner's role, understanding of screening and the intention behind it, language skills and religious beliefs.

CONCLUSION

There are many factors influencing Pakistani immigrants' decision of participation in CRC screening. The roles of the general practitioner and adult children are particularly important. Key elements to improve accessibility to CRC screening and enable informed participation for Pakistani immigrants are measures that improve personal and organizational health literacy.

Women over 50 who use alcohol and their engagement with primary and preventative health services: a narrative review using a systematic approach

BACKGROUND

Women who are over 50 years are drinking alcohol in higher quantities and more frequently than in previous decades. Good engagement with primary care is crucial for women's physical and psychological health, particularly if they use alcohol. However, there is little known about the alcohol use of women over 50 and their use of primary care.

METHODS

A systematic search was conducted on six databases; CINAHL, Medline, PsycINFO, Academic Search Complete, EMBASE and Web of Science to identify literature on primary health care engagement of women 50 years and older (50+) who use alcohol. Titles and abstracts were reviewed and full texts were independently reviewed by two researchers. A narrative review, critical appraisal and synthesis of the eligible studies produced common themes and key findings.

RESULTS

After excluding 3822 articles, 13 articles were deemed eligible for the review. For this age group (50+), findings were: 1) women who drink heavily were less likely than men to attend General Practitioners (GPs), moderate drinkers were more likely than abstainers to attend mammogram screening, 2) GPs were less likely to ask questions or discuss alcohol with women than with men, 3) GPs offered less advice on alcohol to women than to men, and 4) less women than men received alcohol screening from their GP.

DISCUSSION

While women 50+ are drinking more, their alcohol use is underreported and insufficiently provided for in primary health. As women's life expectancy increases, improved GP engagement will benefit women's health and reduce future healthcare costs.

Trends in cervical cancer screening in Norway 2012-2017: a comparison study of non-immigrant and immigrant women

AIMS

Immigrant women in Norway have lower cervical cancer screening participation than non-immigrant women. Our aim in this study was to assess whether the observed increase in screening participation during 2012-2017 was different between Norwegian-born women and immigrant women.

METHODS

Data were collected from three national registries. The study included 1,409,561 women, categorized according to country of birth and immigrant background: (i) Norway, Norwegian parents; (ii) Norway, immigrant parent(s); (iii) Europe, excluding Norway; (iv) Africa; (v) Asia, including Turkey; and (vi) other countries. Trends and differences between groups were analyzed using Poisson regression analyses with adjustments for variables other studies have found to influence screening participation. Trends were assessed by including half-years as a continuous variable in the models and reported as prevalence ratios with 95% confidence intervals.

RESULTS

Screening participation increased in all groups, but was not statistically significant among women from Africa in the adjusted model. The highest increase was among Norwegian women, with a 2.2% increase per year. Interaction tests showed significantly smaller increases in screening among women born in Europe (p interaction < 0.0001), Africa (p interaction < 0.0001), Asia (p interaction < 0.0001), and countries in the "Other" category (p interaction = 0.004). There was also a smaller increase among Norwegian-born women with one or more immigrant parent(s), but this was not significant (p interaction = 0.178).

CONCLUSIONS

The gap in screening participation and the increasing differences in trends suggest that healthcare services do not reach all women in Norway to the same extent. One should attempt to improve this while working toward further increasing screening participation for all.

Differences in mammography screening attendance among non-Western immigrants in Denmark, Finland, Iceland and Norway

Several studies have shown that attendance rates are lower among non-Western immigrants than among natives. As the Nordic countries have quite similar health systems and populations but also differences in the organisation of their organised mammography screening programmes, differences in attendance rates could highlight organisational factors that might increase the attendance rates. Mammography screening is offered free of charge in Denmark and Finland, but not in Iceland and Norway. Contrarily to the other countries, Iceland do not send out pre-booked appointment. The study population included natives and non-Western immigrants aged 50-69 years, who had at least one invitation to the national mammography screening programmes in Denmark (2008-2017), Finland (2001-2017), Iceland (2001-2020) or Norway (2001-2015). Relative risks (RRs) of attendance were estimated and adjusted for age group and calendar period. The study population included 116.033 non-Western immigrants and more than 2 million natives. The attendance rates were significantly lower among non-Western immigrants than among natives, with an adjusted relative risk of 0.81/0.80 in Denmark and Finland, 0.62 in Norway, and 0.40 in Iceland. The lower attendance rates among immigrants in Norway and Iceland did not seem to be due to differences in birth country, immigration age, or educational level, but might be explained by organisational factors. Offering free-of-charge mammography screening in Norway and Iceland and/or including a pre-booked appointment in the invitation letters in Iceland might increase the attendance rate among non-Western immigrants.

Lower participation among immigrants in colorectal cancer screening in Norway

Introduction

Organized cancer screening programs should be equally accessible for all groups in society. We assessed differences in participation in colorectal cancer (CRC) screening among different immigrant groups.

Methods

Between 2012 and 2019, 140,000 individuals aged 50 to 74 years were randomly invited to sigmoidoscopy or repeated faecal immunochemical test (FIT) in a CRC screening trial. In this study, we included 46,919 individuals invited to sigmoidoscopy and 70,018 invited to the first round of FIT between 2012 and 2017. We examined difference in participation between non-immigrants and immigrants, and within different immigrant groups by geographic area of origin, using logistic regression models, adjusted for several sociodemographic factors and health factors.

Results

In total, we included 106,695 non-immigrants and 10,242 immigrants. The participation rate for FIT was 60% among non-immigrants, 58% among immigrants from Western countries and 37% among immigrants from non-Western countries. The participation rate for sigmoidoscopy was 53% among non-immigrants, 48% among immigrants from Western countries and 23% among immigrants from non-Western countries. Compared to non-immigrants, multivariate adjusted odds ratio for non-participation in FIT screening was 1.13 (95% confidence interval 1.04-1.23) and 1.82 (1.69-1.96) for immigrants from Western and non-Western countries. The corresponding numbers in sigmoidoscopy screening were 1.34 (1.21-1.48) and 2.83 (2.55-3.14). The lowest participation was observed in immigrants from Eastern Europe, Northern Africa and Western Asia, and South-Central Asia.

Conclusion

Participation in CRC screening in Norway was particularly low among non-Western immigrants, which could put them at increased risk for late stage diagnosis of CRC. Participation was lower in sigmoidoscopy screening than in FIT screening, especially among immigrants from non-Western countries.

Effect of invitation letter in language of origin on screening attendance: randomised controlled trial in BreastScreen Norway

OBJECTIVE

To explore attendance at organised mammographic screening among immigrant groups that received an invitation letter and information leaflet (invitation) in their language of origin and Norwegian compared with Norwegian only.

DESIGN

Randomised controlled trial.

SETTING

Population based screening programme for breast cancer in Norway (BreastScreen Norway), which invites women aged 50-69 to two-view mammographic screening biennially.

PARTICIPANTS

All women invited to BreastScreen Norway in the study period April 2021 to June 2022 whose language of origin was Arabic (women born in Algeria, Egypt, Lebanon, Iraq, Palestine, Sudan, Syria, Tunisia, or Morocco), English (women born in the Philippines), Polish (women born in Poland), Somali (women born in Somalia), or Urdu (women born in Pakistan) (n=11 347).

INTERVENTION

The study group received an invitation to screening in their language of origin and in Norwegian, whereas the control group received an invitation in Norwegian only during the study period.

MAIN OUTCOME MEASURE

Attendance at BreastScreen Norway during the study period.

RESULTS

Overall attendance was 46.5% (2642/5683) in the study group and 47.4% (2682/5664) in the control group. No statistical differences in attendance were observed after stratification by language of invitation, age at invitation, or years since immigration.

CONCLUSIONS

No difference in attendance was observed between immigrant women invited to BreastScreen Norway in their language of origin and in Norwegian compared with Norwegian only. Several barriers to cancer screening may exist among immigrants, and translating the invitation is probably only a part of a complex explanation.

TRIAL REGISTRATION

NCT04672265.

CLINICALTRIALS

gov NCT04672265.

Breast cancer screening and immigrant women-A scoping review of attendance, knowledge, barriers and facilitators

AIM

The aim of this study was to summarize the latest research reports about immigrant women and attendance in breast cancer screening.

DESIGN

Scoping review.

METHODS

Literature searches were made in CINAHL, PubMed, Web of Science, Google Scholar, Oatd and Oalster. Twenty-three articles were included in the study. Data were analysed with inductive content analysis.

RESULTS

Out of data four main categories were formed: attendance rates, incidence, barriers and facilitators, and knowledge and perception. The results show that attendance rates, barriers and facilitators for attendance, knowledge and experience of breast cancer and breast cancer screening differ between several factors such as the woman's migrant background, country of origin, religion, length of stay in the new home country and sociodemographic factors.

Nationwide mammography screening participation in Denmark during the COVID-19 pandemic: An observational study

Background

In most of the world, the mammography screening programmes were paused at the start of the pandemic, whilst mammography screening continued in Denmark. We examined the mammography screening participation during the COVID-19 pandemic in Denmark.

Methods

The study population comprised all women aged 50-69 years old invited to participate in mammography screening from 2016 to 2021 in Denmark based on data from the Danish Quality Database for Mammography Screening in combination with population-based registries. Using a generalised linear model, we estimated prevalence ratios (PRs) and 95% confidence intervals (CIs) of mammography screening participation within 90, 180, and 365 d since invitation during the pandemic in comparison with the previous years adjusting for age, year and month of invitation.

Results

The study comprised 1,828,791 invitations among 847,766 women. Before the pandemic, 80.2% of invitations resulted in participation in mammography screening within 90 d, 82.7% within 180 d, and 83.1% within 365 d. At the start of the pandemic, the participation in screening within 90 d was reduced to 69.9% for those invited in pre-lockdown and to 76.5% for those invited in first lockdown. Extending the length of follow-up time to 365 d only a minor overall reduction was observed (PR = 0.94; 95% CI: 0.93-0.95 in pre-lockdown and PR = 0.97; 95% CI: 0.96-0.97 in first lockdown). A lower participation was, however, seen among immigrants and among women with a low income.

Conclusions

The short-term participation in mammography screening was reduced at the start of the pandemic, whilst only a minor reduction in the overall participation was observed with longer follow-up time, indicating that women postponed screening. Some groups of women, nonetheless, had a lower participation, indicating that the social inequity in screening participation was exacerbated during the pandemic.

Funding

The study was funded by the Danish Cancer Society Scientific Committee (grant number R321-A17417) and the Danish regions.

Factors affecting women's participation in mammography screening in Nordic countries: A systematic review

INTRODUCTION

Mammography screening programs have been implemented in European countries as prevention tools aimed at reducing breast cancer mortality through early detection in asymptomatic women. Nordic countries (Denmark, Finland, Iceland, Norway, Sweden, the Faroe Islands, and Greenland) demonstrated high participation rates; however, breast cancer mortality could be limited by further optimizing screening. This review aimed to explore factors that affect women's participation in mammography screening in Nordic countries.

METHOD

A systematic review of segregated mixed research synthesis using a deductive approach was conducted. The following databases and platforms were searched to identify relevant studies: CINAHL with Full Text (EBSCOHost), MEDLINE (EBSCOHost), PsycInfo (ProQuest), Scopus (Elsevier) and Web of Science Core Collection (SCI-EXPANDED, SSCI, A&HCI, CPCI-S, CPCI-SSH, and ESCI). The Critical Appraisal Skills Program was used for quality assessment. The Health Promotion Model was applied to integrate findings from qualitative and qualitative research. All methodological steps followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

RESULTS

The final selection (16 articles) included studies from three Nordic countries: Denmark (four quantitative studies), Norway (one qualitative and four quantitative studies), and Sweden (three qualitative and seven quantitative studies). Sixty-three factors were identified as barriers, facilitators, or factors with no influence.

CONCLUSION

A substantial number of obtained factors, spread across a wide spectrum, describe (non-)participation in mammography screening as a versatile phenomenon.

IMPLICATIONS FOR PRACTICE

The findings of this review could benefit the mammography staff and providers regarding possible interventions aimed at improving screening participation rates.

A population-based cohort study on changes in breast, lung and colorectal cancer incidence and mortality among non-Western immigrant women

BACKGROUND

Cancer risk varies geographically, and migrants are influenced by different risk factors before, during and after migration. Increased migration from non-Western countries to the Nordic countries calls for a better understanding of the migrants' cancer risk and the change in risk patterns over time. The aim of this study was to compare the incidence and mortality of breast, colorectal and lung cancer between non-Western immigrant and the native female population in Denmark, Finland, Iceland, and Norway.

MATERIAL AND METHODS

Data from national registries were processed and pre-analysed in each country. Multivariate Poisson regression models were used to model the relative differences in incidence and mortality as rate ratios (RR). The country-specific estimates and summary statistics were pooled together using a random effects model.

RESULTS

Non-Western immigrant women had significantly lower breast (RR 0.71, 0.65-0.78), colorectal (RR 0.72, 0.57-0.92) and lung (RR 0.55, 0.42-0.72) cancer incidence rates than native women, and the risk of these cancers among immigrant women increased with duration of residence. Differences were parallel in breast, colorectal and lung cancer mortality (RR 0.64, 0.55-0.74; RR 0.66, 0.48-0.92; RR 0.51, 0.34-0.79). Among immigrant women, higher education increased the risk for breast cancer and decreased it for lung cancer.

CONCLUSION

The results significantly complement and add to the previous findings of cancer burden and cancer burden transition among migrants and provide evidence of a prolonged cancer risk advantage among non-Western immigrant women. However, the findings show an increasing risk of lifestyle-related cancers with increasing duration of residence in the host country. Further studies are needed to discover underlying reasons for this phenomenon.

Polish immigrants’ access to colorectal cancer screening in Norway – a qualitative study

Background

The Norwegian colorectal cancer (CRC) screening programme started in May 2022. Inequities in uptake of CRC screening is a concern, and we expect that immigrants are at risk of non-uptake. Immigrants from Poland are the most populous immigrant group in Norway. The purpose of this study was to identify and explore factors that may facilitate Polish immigrants’ access to the Norwegian CRC screening programme.

Material and methods

This study was based on qualitative interviews with ten Polish immigrants in Norway. The participants represented a convenience sample that varied in terms of gender, education, employment, time in Norway, place of residence, Norwegian language skills and ties to the Norwegian-Polish community. We performed thematic content analysis to understand CRC screening from the perspective of Polish immigrants, using transnationalism and Levesque’s conceptualization of accessibility as theoretical frameworks.

Results

We grouped our findings into three themes; “understanding of CRC development and the need to access health care”, “binationalism” and “improving accessibility through information”. Within these themes, various factors influenced the participants’ accessibility to CRC screening, namely knowledge about the screening and about causes, development and prevention of the disease, language, choice of screening country, trust in health personnel’s competence, information needs, methods and sources, as well as participants’ perception of the faecal immunochemical test screening user manual. These factors were further influenced by communication between the Polish community in Norway and Poland, as well as travel between the countries.

Conclusion

We identified several factors that can be targeted with an aim to increase Polish immigrants’ access to the Norwegian CRC screening programme. Effective measures could include increasing cultural competence among health care providers and providing information in Polish through Polish-speaking health care professionals, general practitioners and internet portals used by the Polish-speaking community. Focusing on accessibility in a transnational setting, our findings may be of interest for policy makers and service providers planning preventive health measures for immigrants.

The Viral Origin of Human Breast Cancer: From the Mouse Mammary Tumor Virus (MMTV) to the Human Betaretrovirus (HBRV)

A Human Betaretrovirus (HBRV) has been identified in humans, dating as far back as about 4500 years ago, with a high probability of it being acquired by our species around 10,000 years ago, following a species jump from mice to humans. HBRV is the human homolog of the MMTV (mouse mammary tumor virus), which is the etiological agent of murine mammary tumors. The hypothesis of a HMTV (human mammary tumor virus) was proposed about 50 years ago, and has acquired a solid scientific basis during the last 30 years, with the demonstration of a robust link with breast cancer and with PBC, primary biliary cholangitis. This article summarizes most of what is known about MMTV/HMTV/HBRV since the discovery of MMTV at the beginning of last century, to make evident both the quantity and the quality of the research supporting the existence of HBRV and its pathogenic role. Here, it is sufficient to mention that scientific evidence includes that viral sequences have been identified in breast-cancer samples in a worldwide distribution, that the complete proviral genome has been cloned from breast cancer and patients with PBC, and that saliva contains HBRV, as a possible route of inter-human infection. Controversies that have arisen concerning results obtained from human tissues, many of them outdated by new scientific evidence, are critically discussed and confuted.

The influence of metabolic factors and ethnicity on breast cancer risk, treatment and survival: The Oslo ethnic breast cancer study

BACKGROUND

Breast cancer risk remains higher in high-income compared with low-income countries. However, it is unclear to what degree metabolic factors influence breast cancer development in women 30 years after immigration from low- to a high-incidence country.

METHODS

Using Cox regression models, we studied the association between pre-diagnostic metabolic factors and breast cancer development, and whether this association varied by ethnicity among 13,802 women participating in the population-based Oslo Ethnic Breast Cancer Study. Ethnic background was assessed and pre-diagnostic metabolic factors (body mass index, waist:hip ratio, serum lipids and blood pressure) were measured. A total of 557 women developed invasive breast cancer, and these women were followed for an additional 7.7 years.

RESULTS

Among women with an unfavorable metabolic profile, women from south Asia, compared with western European women, had a 2.3 times higher breast cancer risk (HR 2.30, 95% CI 1.18-4.49). Compared with the western European women, the ethnic minority women were more likely to present with triple-negative breast cancer (TNBC) (OR 2.11, 95% CI 0.97-4.61), and less likely to complete all courses of planned taxane treatment (OR 0.26, 95% CI 0.08-0.82). Among TNBC women, above-median triglycerides:HDL-cholesterol (>0.73) levels, compared with below-median triglycerides:HDL-cholesterol (≤0.73) levels, was associated with 2.9 times higher overall mortality (HR 2.88, 95% CI 1.02-8.11).

CONCLUSIONS

Our results support the importance of metabolic factors when balancing breast cancer prevention and disease management among all women, and in particular among non-western women migrating from a breast cancer low-incidence to a high-incidence country.

Understanding patient factors to increase uptake of cancer screening: a review

Early detection of cancer through organized screening is a central component of population-level strategies to reduce cancer mortality. For screening programs to be effective, it is important that those invited to screening participate. However, uptake rates are suboptimal in many populations and vary between screening programs, indicating a complex combination of patient factors that require elucidation to develop evidence-based strategies to increase participation. In this review, the authors summarize individual-level (sociodemographic and psychosocial) factors associated with cancer screening uptake and evidence for the effectiveness of behavioral interventions to increase uptake. The authors reflect on current trends and future directions for behavioral cancer screening research to overcome challenges and address unmet needs in reducing cancer mortality.

Does Women's Screening History Have Any Impact on Mammography Screening Attendance After Tailored Education?: A Systematic Review and Meta-analysis

BACKGROUND

Many ethnic minority women have low attendance at breast cancer screening.

OBJECTIVES

This brief report explores whether women's screening histories impact mammography screening attendance after tailored education.

RESEARCH DESIGN

Systematic searches were conducted in 5 databases. Randomized controlled trials of educational interventions tailored to ethnic minority women that measured attendance at mammography screening were eligible for inclusion. Data extraction and risk of bias assessment were performed independently. Data were combined in a meta-analysis by using random effects models. Heterogeneity was estimated by using I2 statistics.

RESULTS

Six studies with 3521 women were eligible for inclusion. The D+L pooled risk ratio (RR) for mammography attendance for never screened participants was 1.54 (95% confidence interval, 1.24-1.91; P<0.001), with low heterogeneity (I2=27.1%, P=0.231). The D+L pooled risk ratio for attendance for ever screened participants was 1.26 (95% confidence interval, 1.11-1.43; P<0.001), with low heterogeneity (I2=35.5%, P=0.213).

CONCLUSIONS

Tailored education increased attendance at mammography by 54% among never screened women and 26% among ever screened women. Although these findings must be interpreted with caution, the findings suggest that women's screening history is an important and ignored variable that affects how effective tailored education is on mammography screening attendance.

Refugee and Migrant Health Literacy Interventions in High-Income Countries: A Systematic Review

Health literacy is a key determinant of health in refugee and migrant populations living in in high-income countries (HICs). We conducted a systematic review of randomized-controlled trials (RCTs) to characterize the scope, methodology, and outcomes of research on interventions aimed at improving health literacy among these vulnerable populations. We searched EMBASE, MEDLINE, PsycINFO, CINAHL, and Web of Science databases to identify RCTs of health literacy intervenions in our target population published between 1997 and 2018. The search yielded 23 RCTs (n = 5625 participants). Study demographics, health literacy topics, interventions, and outcome measures were heterogeneous but demonstrated overall positive results. Only two studies used a common health literacy measure. Few RCTs have been conducted to investigate interventions for improving the health literacy of refugees and migrants in HICs. The heterogeniety of health literacy outcome measures used impeded a robust comparison of intervention efficacy.

Psychological predictors of intention and avoidance of attending organized mammography screening in Norway: applying the Extended Parallel Process Model

Background

Mammography screening is the main method for early detection of breast cancer in Norway. Few studies have focused on psychological determinants of both attendance and non-attendance of publicly available mammography screening programs. The aim of the current study, guided by the Extended Parallel Process Model, was to examine how psychological factors influence defensive avoidance of breast cancer screening and intention to attend mammography.

Methods

Cross-sectional survey data from a community sample of women living in Norway aged ≥ 18 (N = 270), and without a history of breast cancer, was collected from September 2018 to June 2019 and used to investigate the relationships between the Extended Parallel Process Model (EPPM) constructs and two outcomes: defensive avoidance of breast cancer screening and intention to attend mammography within the next two years. After adjusting for confounding factors, the hierarchical multiple linear regression analyses was conducted to assess the ability of the independent variables based on the EPPM to predict the two outcome variables. Significance level was chosen at p < 0.05.

Results

Multivariate analyses showed that defensive avoidance of breast cancer screening was predicted by lower perceived susceptibility to breast cancer (β =  − 0.22, p = 0.001), lower response efficacy of mammography screening (β =  − 0.33, p = 0.001), higher breast cancer fear (β = 0.15, p = 0.014), and checking breasts for lumps (β =  − 0.23, p = 0.001). Intention to attend mammography within the next two years was predicted by higher response efficacy of mammography screening (β = 0.13, p = 0.032), having a lower educational level (β =  − 0.10, p = 0.041), and regular previous mammography attendance compared to never attending (β = 0.49, p = 0.001).

Conclusions

The study revealed that defensive avoidance of breast cancer screening and intention to attend mammography were not predicted by the same pattern of psychological factors. Our findings suggest future health promotion campaigns need to focus not only on the psychological factors that encourage women’s decision to attend the screening, but also to counter factors that contribute to women’s decision to avoid it.

Cancer incidence in non-immigrants and immigrants in Norway

BACKGROUND

Major cancers are associated with lifestyle, and previous studies have found that the non-immigrant populations in the Nordic countries have higher incidence rates of most cancers than the immigrant populations. However, rates are changing worldwide - so these differences may disappear with time. Here we present recent cancer incidence rates among immigrant and non-immigrant men and women in Norway and investigate whether previous differences still exist.

MATERIAL AND METHODS

We took advantage of a recent change in the Norwegian Cancer Registry regulations that allow for the registry to have information on country of birth. The number of person years for 2014-2018 was aggregated for every combination of sex, five-year age-group and country of birth, by summing up each year's population in these groups. The number of cancer cases was then counted for the same groups, and age-standardised incidence rates calculated by weighing the age-specific incidence rates by the Nordic and World standard populations. Further, we calculated incidence rate ratios using the non-immigrant population as a reference.

RESULTS

Immigrants from Eastern Europe, the Middle East, Africa and Asia had lower incidence of total cancer compared to the non-immigrant population in Norway and immigrants born in the other Nordic or high-income countries. However, some cancers were more common in certain immigrant groups. Asian men and women had threefold the incidence of liver cancer than non-immigrant men and women. Men from the other Nordic countries and from Eastern Europe had higher lung cancer rates than non-immigrant men.

CONCLUSION

National registries should continuously monitor and present cancer incidence stratified on important population subgroups such as country of birth. This can help assess population subgroup specific needs for cancer prevention and treatment, and could eventually help reduce the morbidity and mortality of cancer.

Factors associated with attendance and attendance patterns in a population-based mammographic screening program

OBJECTIVE

To explore the factors associated with attendance and attendance pattern in BreastScreen Norway.

METHODS

We evaluated the number of invitations (n = 1,253,995) and attendances, 2015-2019, stratified by age, invitation method, screening unit and time of appointment. Attendance pattern was analysed for women invited 10 times (n = 47,979), 1996-2019. The association of education level, body mass index, physical activity and smoking status with attendance was analysed for a sub-sample of women (n = 37,930). Descriptive statistics were used to analyse attendance, and negative binomial regression was used to analyse the association between the total number of attendances and education level and lifestyle factors.

RESULTS

The attendance rate was 76.0%, 2015-2019. The rate was 78.0% for women aged >64 and 73.9% for those <55 . We found a rate of 82.0% for women who received a digital invitation, while it was 73.7% for those invited by post. The rate was 78.1% for invitations in the late afternoon, 3-6 p.m., while later appointments reached a rate of 73.7%. Half of the women invited 10 times attended all times. The predicted total number of attendances was 9 out of 10 for the factors investigated.

CONCLUSION

The highest attendance rates were shown for women aged >64, those who received digital invitations and those having appointments in late afternoon. The differences in predicted number of attendances between the investigated factors were minor. Overall, BreastScreen Norway has a high attendance rate. However, efforts aimed at increasing the attendance in specific groups should be considered.

Risks and perception of non-communicable diseases and health promotion behavior of middle-aged female immigrants in Japan: a qualitative exploratory study

BACKGROUND

Ensuring good health of immigrants is a serious issue across countries, including Japan. This study focused on the health of middle-aged female immigrants in Japan who experienced changes to their health as well as an increased risk of non-communicable diseases. Specifically, the study aimed to clarify the risks and perceptions of non-communicable diseases and health promotion behavior of middle-aged female immigrants in Japan.

METHODS

This investigation used an exploratory design. The participants were a purposive sample of 35 middle-aged female immigrants (age ≥ 40 years) living in urban and rural areas of Japan. Data were generated using mixed methods. A quantitative approach provided data of their risks of non-communicable diseases. Focus group discussions provided insights to identify their health promotion perceptions.

RESULTS

Blood pressure measurement revealed that 29% of the immigrants had hypertension, 29% had a body mass index of > 30, and 71% had an abdominal girth of > 80 cm. About 31% had a history of chronic disease and 34% had regular medication. There were 80% who received regular health check-up, 49% who received breast cancer screening, and 34% who received cervical cancer screening. The focus group discussions indicated that the middle-aged female immigrants recognized the threat of non-communicable diseases. However, they lacked knowledge about the prevention of non-communicable diseases, and they felt that non-communicable diseases were unavoidable. They also failed to understand the benefits of health promotion behavior. The study revealed that the monolingual Japanese health service prevented immigrant women from understanding their health check-up and cancer screening results, and how to utilize the health service system.

CONCLUSIONS

Middle-aged female immigrants in Japan had potential risks of non-communicable diseases, and recognized their threat. These settled immigrant women received health check-ups and cancer screenings with the support of their family, and consequently attained the same level of adherence as that of Japanese women. However, lack of knowledge about health promotion and its benefits and the absence of a culturally sensitive health service system for immigrants in Japan constrained their health-promotion behavior. Sociocultural multilingual-tailored interventions including interpretation services by care providers with cultural sensitivities must be developed.

Waiting times and treatment following cancer diagnosis: comparison between immigrants and the Norwegian host population

Background: There are concerns about timely access to appropriate cancer treatment for the growing immigrant population in Norway. This study aims to compare waiting times between cancer diagnosis and start of cancer treatment, as well as treatment patterns between immigrants in Norway and the host population.Material and methods: We performed a nationwide, registry-based study with individual-level data, including 213,320 Norwegians and 8324 immigrants diagnosed with breast, colorectal, lung or prostate cancer in 1990-2014. Differences in time from diagnosis to treatment and in treatment patterns were described for the selected cancer sites. The Cox and logistic regressions were used to adjust for patient and tumour characteristics.Results: After adjustment for covariates, hazard ratios for time from diagnosis to treatment for non-Western immigrants compared to Norwegians were 0.88 (95% confidence interval (CI): 0.82-0.95) for breast cancer and 0.84 (95% CI: 0.75-0.95) for lung cancer, indicating longer waiting times. Treatment patterns in the four major cancer sites were similar among immigrants and the Norwegian host population, except for breast cancer, where women from East and South Asia received less breast-conserving surgery than the Norwegian host population (adjusted odds ratios 0.65 (95% CI: 0.46-0.93) for East Asians and 0.75 (95% CI: 0.50-1.13) for South Asians).Conclusions: The present study reports delayed treatment for lung and breast cancer among immigrants from non-Western countries in Norway. Systematic differences in cancer treatment were not detected. However, less breast-conserving surgery among breast cancer patients from Asia compared to Norwegians was observed.

Effect of culturally tailored education on attendance at mammography and the Papanicolaou test

Objectives

To determine the effectiveness of culturally tailored education on attendance at breast and cervical cancer screening among ethnic minority women.

Data Sources

Systematic database searches in Ovid MEDLINE, ProQuest, PubMed, PsycINFO, and Cochrane CENTRAL.

Study Design

Randomized controlled trials (RCTs) of culturally tailored educational interventions to ethnic minority women in Western countries were investigated for a meta‐analysis. RCTs that assessed attendance at mammography or the Papanicolaou test (Pap test) were eligible for inclusion.

Data Collection Methods

Study characteristics and results were extracted separately. Independent raters assessed risk of bias by using Cochrane Collaboration's tool.

Principal Findings

Seven RCTs (n = 4246) were included in the meta‐analysis of mammography attendance, and four RCTs (n = 1750) were included in the meta‐analysis of Pap test attendance. The effect of culturally tailored educational interventions on attendance at mammography was an increase of 18 percent (RR = 1.18, 95% CI, 1.09‐1.28, P < .001), with low heterogeneity (I² = 30.0, P = .237), and a 54 percent increase at the Pap test (RR = 1.54, 95% CI, 1.14‐2.09, P = .005), with substantial heterogeneity (I² = 75.9%, P = .001).

Conclusions

Interpreted within the limitations set by the low number of studies and substantial heterogeneity for the Pap test, findings from the current meta‐analyses indicate that culturally tailored educational interventions may increase attendance of ethnic minority women at breast and cervical cancer screenings. There is a need for more studies, in particular RCTs conducted outside the United States, to determine if such findings are similar in other countries.

Gender, letters, relatives, and God: mediating actors in mammographic screening among Pakistani women in Norway

BACKGROUND

Pakistani immigrant women in Norway have lower attendance rates in the national breast cancer screening program (BreastScreen Norway) compared to non-immigrants and immigrants from most other countries.

PURPOSE

To identify and explore human and non-human actors that play a role for Pakistani immigrant women's attendance in the program.

MATERIAL AND METHODS

Qualitative interviews with 16 Norwegian-Pakistani women in 2017 and 2018. Inspired by Latour, we explored how human and non-human actors act and interact when Pakistani immigrant women consider attendance in BreastScreen Norway.

RESULTS

Among the actors found to play a significant role in the relationship between Pakistani immigrant women and the screening program were trust in the healthcare system and breast cancer screening, the gender of the screening radiographer, the written information received from the screening program, family life, daughters, general practitioners, non-governmental organizations, religious beliefs, private service providers, monetary expenses, accessibility, worries, and digital tools.

CONCLUSION

Many human and non-human actors work to shape and influence Pakistani immigrant women's screening attendance, or lack thereof, for instance by creating thoughts, promoting opportunities, raising doubts and generating worries, thus variously encouraging, enabling, facilitating, discouraging or preventing attendance in organized breast cancer screening.

Performance measures among non-immigrants and immigrants attending BreastScreen Norway: a population-based screening programme

OBJECTIVES

To explore performance measures among non-immigrants and immigrants attending BreastScreen Norway.

METHODS

We analysed data from 2,951,375 screening examinations among non-immigrants and 153,026 among immigrants from 1996 to 2015. Immigrants were categorised into high- and low-incidence countries according to the incidence of breast cancer in their birth country. Performance measures, including attendance and recall rates, rates of screen-detected cancer (SDC) and interval breast cancer (IBC), positive predictive value (PPV) and histopathological tumour characteristics, were analysed. We used Fisher's exact model and t tests for descriptive statistics, and Poisson regression, adjusting for age and screening history, comparing results for non-immigrants versus immigrants.

RESULTS

Attendance rates were 78% for non-immigrants and 56% for immigrants (p < 0.001). Rates of prevalent screens were 24% for non-immigrants and 32% for immigrants (p < 0.001). Immigrants from low-incidence countries were younger at diagnosis than non-immigrants (57 years versus 60 years, p < 0.001). Recall rates were 3.1% for non-immigrants and 3.8% for immigrants (p < 0.001), while PPVs were 17% and 14% (p < 0.001), respectively. IBCs in immigrants from low-incidence countries were more often triple negative (RR_adj 1.81, 95% CI 1.11-2.94) than those in non-immigrants. Both SDC and IBC in immigrants from low-incidence countries tended more often to be histological grade 3 than those in non-immigrants.

CONCLUSION

Immigrants had lower attendance rates, higher recall rates and lower PPV than non-immigrants. The optimal age range and screening interval for immigrant women from low-incidence countries need to be further investigated.

KEY POINTS

• Immigrants from countries with a low incidence of breast cancer had their breast cancer diagnosed at a younger age than non-immigrants. • Interval breast cancers detected in immigrants from countries with a low incidence of breast cancers were more often triple negative than those in non-immigrants. • The optimal age range and screening interval for immigrant women from low-incidence countries and non-immigrants might differ.

Treatment completion for latent tuberculosis infection in Norway: a prospective cohort study

Background

Successful treatment of latent tuberculosis infection (LTBI) is essential to reduce tuberculosis (TB) incidence rates in low-burden countries. This study measures treatment completion and determinants of non-completion of LTBI treatment in Norway in 2016.

Methods

This prospective cohort study included all individuals notified with LTBI treatment to the Norwegian Surveillance System for Infectious Diseases (MSIS) in 2016. We obtained data from MSIS and from a standardized form that was sent to health care providers at the time of patient notification to MSIS. We determined completion rates. Pearson’s chi squared test was used to study associations between pairs of categorical variables and separate crude and multivariable logistic regression models were used to identify factors associated with treatment completion and adverse drug effects.

Results

We obtained information on treatment completion from 719 of the 726 individuals notified for LTBI treatment in 2016. Overall, 91% completed treatment. Treatment completion was highest in the foreign-born group [foreign-born, n = 562 (92%) vs Norwegian-born, n = 115 (85%), p = 0.007]. Treatment completion did not differ significantly between prescribed regimens (p = 0.124). Adverse events were the most common reason for incomplete treatment. We found no significant differences in adverse events when comparing weekly rifapentine (3RPH) with three months daily isoniazid and rifampicin (3RH). However, there were significantly fewer adverse events with 3RPH compared to other regimens (p = 0.037). Age over 35 years was significantly associated with adverse events irrespective of regimen (p = 0.024), whereas immunosuppression was not significantly associated with adverse events after adjusting for other variables (p = 0.306). Treatment under direct observation had a significant effect on treatment completion for foreign-born (multivariate Wald p-value = 0.017), but not for Norwegian-born (multivariate Wald p-value = 0.408) individuals.

Conclusions

We report a very high treatment completion rate, especially among individuals from countries with high TB incidence. The follow-up from tuberculosis-coordinators and the frequent use of directly observed treatment probably contributes to this. Few severe adverse events were reported, even with increased age and in individuals that are more susceptible. While these results are promising, issues of cost-effectiveness and targeting treatment to individuals at highest risk of TB are important components of public health impact.

Electronic supplementary material

The online version of this article (10.1186/s12879-018-3468-z) contains supplementary material, which is available to authorized users.

Differences in cancer survival between immigrants in Norway and the host population

Cancer survival is an important indicator for quality of cancer care. We sought to determine if there are differences in cancer survival between immigrants and the host population in Norway. We performed a nationwide registry-based study comprising subjects diagnosed with cancer between 1990 and 2014, and followed until the end of 2016. Survival was estimated for 13 cancer sites with cause-specific survival. Adjustments were made for common confounders (age, sex, year of diagnosis and place of residence) and defined mediators (stage at diagnosis, comorbidity and socioeconomic factors). A total of 500,255 subjects were available for analysis, of which 11,252 were Western and 8,701 non-Western immigrants. We did not find differences in cancer survival between Western immigrants and Norwegians, while non-Western immigrants, with some exceptions, had similar or better survival. Better lung cancer survival in non-Western immigrants than Norwegians was notable (hazard ratio (95% confidence interval): 0.78 (0.71-0.85)), and not explained by defined mediators. Immigrants from Eastern Europe and Balkan with melanoma (hazard ratio: 1.54 (1.12-2.12)) and prostate cancer (hazard ratio: 1.34 (1.08-1.67)), and possibly from sub-Saharan Africa with breast cancer (hazard ratio: 1.41 (0.94-2.12)) had worse survival than Norwegians. The results suggest that immigrants in Norway have good cancer survival relative to the host population. Poor survival in immigrants from Eastern Europe and Balkan with melanoma and prostate cancer, and sub-Saharan Africa with breast cancer might be a concern.

Breast screening participation and retention among immigrants and nonimmigrants in British Columbia: A population-based study

Breast cancer screening programs operate across Canada providing mammography to women in target age groups with the goal of reducing breast cancer mortality through early detection of tumors. Disparities in breast screening participation among socio‐demographic groups, including immigrants, have been reported in Canada. Our objectives were to: (1) assess breast screening participation and retention among immigrant and nonimmigrant women in British Columbia (BC), Canada; and (2) to characterize factors associated with screening among screening‐age recent immigrant women in BC. We examined 2 population‐based cohorts of women eligible for breast screening participation (537 783 women) and retention (281 052 women) using linked health and immigration data. Breast screening rates were presented according to socio‐demographic and health‐related variables stratified by birth country. Factors associated with screening among recent immigrant women were explored using Poisson regression. We observed marked variation in screening participation across birth country cohorts. Eastern European/Central Asian women showed low participation (37.9%) with rates from individual countries ranging from 35.0% to 49.0%. Participation rates for immigrant women from the most common birth countries, such as China/Macau/Hong Kong/Taiwan (45.7%), India (44.5%), the Philippines (45.9%), and South Korea (39.0%), were lower than the nonimmigrant rates (51.2%). Retention rates showed less variation by birth country; however, some disparities between immigrant and nonimmigrant groups persisted. Associations between screening indicators and study factors varied considerably across immigrant groups. Primary care physician visits were consistently positively associated with screening participation; this variable was also the only predictor associated with screening within each of the groups of recent immigrants. Our study provides unique data on both screening participation and retention among Canadian immigrant women compiled by individual country of birth. Our results are further demonstration that screening disparities exist among immigrant populations as well as in comparison with nonimmigrant women.