Socio-economic inequalities in breast and cervical cancer screening practices in Europe: influence of the type of screening program

Interventions that facilitate adherence to Pap smear exam: integrative review

RESUMO Objetivo: identificar produções científicas que apresentem intervenções relevantes para implementar o Programa de Prevenção do Câncer Cérvico-Uterino, aumentando a adesão à realização do exame. Método: revisão integrativa da literatura, realizada por busca on-line, nas bases de dados: LILACS, SciELO e Pubmed®, abrangendo artigos publicados de 2009 a 2014. Resultados: trinta e oito artigos compuseram a amostra final do estudo. Estes indicaram as seguintes intervenções: utilização de gerente de caso, contato telefônico, carta-convite, atividades educativas, divulgação na mídia, agentes de saúde da comunidade, parcerias, rastreamento de base populacional e múltiplas intervenções. Conclusão: as pesquisas concentram-se entre mulheres provenientes de países em desenvolvimento, e estas intervenções são eficazes no aumento da adesão e do conhecimento destas mulheres em relação à prevenção do câncer cérvico-uterino.

Why Human Papillomavirus Acute Infections Matter

Most infections by human papillomaviruses (HPVs) are `acute', that is non-persistent. Yet, for HPVs, as for many other oncoviruses, there is a striking gap between our detailed understanding of chronic infections and our limited data on the early stages of infection. Here we argue that studying HPV acute infections is necessary and timely. Focusing on early interactions will help explain why certain infections are cleared while others become chronic or latent. From a molecular perspective, descriptions of immune effectors and pro-inflammatory pathways during the initial stages of infections have the potential to lead to novel treatments or to improved handling algorithms. From a dynamical perspective, adopting concepts from spatial ecology, such as meta-populations or meta-communities, can help explain why HPV acute infections sometimes last for years. Furthermore, cervical cancer screening and vaccines impose novel iatrogenic pressures on HPVs, implying that anticipating any viral evolutionary response remains essential. Finally, hints at the associations between HPV acute infections and fertility deserve further investigation given their high, worldwide prevalence. Overall, understanding asymptomatic and benign infections may be instrumental in reducing HPV virulence.

Introduction of an organised programme and social inequalities in mammography screening: A 22-year population-based study in Geneva, Switzerland

In developed countries, breast cancer mortality has decreased during the last decades due to, at least partially, the advent of mammography screening. Organised programmes aim, among other objectives, to increase participation and decrease social inequalities in screening access. We aimed to characterise the evolution of socioeconomic disparities in mammography screening before and after the implementation of an organised programme in Geneva, Switzerland. We included 5345 women, aged 50-74years, without past history of breast cancer who participated in the cross-sectional Bus Santé study, between 1992 and 2014. Outcome measures were: 1) never had a mammography (1992-2014) and 2) never had a mammography or not screened in the two years before being surveyed (subgroup analysis, 2007-2014). Educational attainment was divided in three groups (primary, secondary and tertiary) and period in two (before/after introduction of a screening programme in 1999). We calculated measures of relative and absolute change, including the relative (RII) and slope (SII) indices of social inequality adjusted for age and nationality. We compared the prevalence of screening before and after screening programme implementation using Poisson models. The proportion of unscreened women decreased during the study period from 30.5% to 3.6%. Lower educated women were more frequently unscreened (RII=2.39, p<0.001; SII=0.10, p<0.001). Organised screening decreased the proportion of unscreened women independently of education (prevalence ratio_{before vs. after}=4.41, p<0.001), but absolute and relative inequalities persisted (RII=2.11, p=0.01; SII=0.04, p=0.01). Introduction of an organised programme increased women's adherence to mammography screening but did not eliminate social disparities in screening participation.

Association between mothers' screening uptake and daughters' HPV vaccination: a quasi-experimental study on the effect of an active invitation campaign

OBJECTIVES

In Emilia-Romagna, the Human Papillomavirus (HPV) vaccination campaign started in 2008 offering free vaccines for 1996 and 1997 cohorts. Systematic active invitation was implemented for the 1997 cohort. Our study aimed at measuring the impact of the active invitation campaign on HPV vaccine coverage and on coverage inequalities in 11-year-old girls. Second, we evaluated the effect of the HPV vaccination campaign on participation in cervical cancer screening by mothers of target girls.

METHODS

We collected information on vaccination status for girls residing in Reggio Emilia in 2008 and mothers' screening history, before and after the 2008 vaccination campaign. Log-binomial regression models were performed to estimate Relative Risk (RR) and 95% confidence intervals (CIs) of being vaccinated as regarded citizenship, siblings, mothers' education, marital status and screening history, stratified by birth cohort. We also calculated RR of receiving a Pap test after the vaccination campaign as regarded education, daughter's cohort and mothers' decision to have their daughter vaccinated. Interaction between education and cohort in mothers overdue for Pap testing was calculated.

RESULTS

Vaccination coverage was 46.3% for the uninvited cohort (1046/2260) and 77.9% for the invited cohort (1798/2307). In the uninvited cohort, daughters' vaccination showed association with mothers' education (8 to 11 years of education vs. graduated mothers, RR 1.61 95% CI 1.14-2.28), citizenship (foreigners vs. Italians, RR 0.45 95% CI 0.37-0.56) and screening history (regular vs. non-participant; RR 1.72 95% CI 1.26-2.36). In the invited cohort, only a slight association with screening history persisted (regular vs. non-participant; RR 1.20 95% CI 1.04-1.40). Highly educated under-screened mothers of the invited cohort showed a higher probability of receiving a Pap test after the vaccination campaign period (RR 1.27 95% CI 1.04-1.56) compared with those not invited, CONCLUSION: Active invitation could increase overall HPV immunisation coverage and reduce socio-demographic inequalities and the association with mothers' screening participation.

Inequalities in cervical cancer screening utilisation and results: A comparison between Italian natives and immigrants from disadvantaged countries

Cervical cancer screening underutilisation is documented among immigrants from poor countries and it is associated to an augmented risk for severe lesions. In a cohort of 1,410,364 Italian women and 200,491 immigrants from poor countries differences in screening participation and results were investigated. Participation rate was lower for immigrants than for Italians: 43.98% versus 48.59% (chi(1): p<0.001). This gap increased with age (ptrend<0.0001). Some socio-demographic factors negatively influenced immigrants' participation. Illiteracy (OR=0.75) versus secondary school, being single (OR=0.71) versus attached, first screens (OR=0.67) versus subsequent ones. Although the interaction between educational and professional levels showed that graduated immigrant women conducting an intellectual job have a higher inclination towards screening than their Italian peers (OR=1.43 vs OR=1.04). The Standardised Detection Ratio (SDR) suggested a frequency of severe lesions nearly double among immigrants in first screens (SDR=1.94; 95% CI: 1.82-2.08) and even higher (SDR=2.53; 95% CI: 2.35-2.73) for Central/Eastern Europeans. Multi-component interventions involving both patients and providers offer the greatest potential to increase cervical cancer screening uptake within foreign-born populations. So immigrant-specific interventions are needed for some immigrant groups, like Central/Eastern Europeans who are at higher risk of cervical lesions and, together with Asians and Africans, showed a poor attitude towards cancer prevention.

Assessing predicted age-specific breast cancer mortality rates in 27 European countries by 2020

BACKGROUND

We assessed differences in predicted breast cancer (BC) mortality rates, across Europe, by 2020, taking into account changes in the time trends of BC mortality rates during the period 2000-2010.

METHODS

BC mortality data, for 27 European Union (EU) countries, were extracted from the World Health Organization mortality database. First, we compared BC mortality data between time periods 2000-2004 and 2006-2010 through standardized mortality ratios (SMRs) and carrying out a graphical assessment of the age-specific rates. Second, making use of the base period 2006-2012, we predicted BC mortality rates by 2020. Finally, making use of the SMRs and the predicted data, we identified a clustering of countries, assessing differences in the time trends between the areas defined in this clustering.

RESULTS

The clustering approach identified two clusters of countries: the first cluster were countries where BC predicted mortality rates, in 2020, might slightly increase among women aged 69 and older compared with 2010 [Greece (SMR 1.01), Croatia (SMR 1.02), Latvia (SMR 1.15), Poland (SMR 1.14), Estonia (SMR 1.16), Bulgaria (SMR 1.13), Lithuania (SMR 1.03), Romania (SMR 1.13) and Slovakia (SMR 1.06)]. The second cluster was those countries where BC mortality rates level off or decrease in all age groups (remaining countries). However, BC mortality rates between these clusters might diminish and converge to similar figures by 2020.

CONCLUSIONS

For the year 2020, our predictions have shown a converging pattern of BC mortality rates between European regions. Reducing disparities, in access to screening and treatment, could have a substantial effect in countries where a non-decreasing trend in age-specific BC mortality rates has been predicted.

[Socioeconomic inequalities in mammography screening in Spanish women aged 45 to 69]

OBJECTIVE

To analyse mammography screening in Spanish women aged 45 to 69 according sociodemographic variables and to describe the role of population-based breast cancer screening programmes in terms of variability of said screening.

METHODS

Cross-sectional study of the 2011 National Health Survey. The study population includes women living in Spain between late 2011 and early 2012. The weighted sample analysed corresponds to 3,086 women aged 45 to 69. The dependent variables were mammograms and when the last mammogram was performed and why. Independent variables were age, social class, occupational status, country of origin, area of origin (rural/urban), health cover and years the programme had been in place. Logistic regression models were performed, with odds ratio (OR) adjusted according to age and 95% confidence intervals (95% CI).

RESULTS

Approximately 91.9% indicated that they had had a mammogram before. The women who had had their last mammography screening in the previous 1 to 2 years were associated with the highest social class (OR: 1.69; 95% CI: 1.03-2.75). The reason for performing the last periodic mammogram via a population-based programme was associated with women aged between 60 and 69 years (OR: 1.51; 95% CI: 1.04-2.19).

CONCLUSIONS

The results show that there are still inequalities in preventive practices. Possible risk groups need to be identified in order to promote the implementation of specific actions.

Personal and provider level factors influence participation to cervical cancer screening: A retrospective register-based study of 1.3 million women in Norway

High coverage is essential for an effective screening programme. Here we present screening barriers and facilitators among 1.3 million women aged 25-69years eligible for screening within the Norwegian Cervical Cancer Screening Program (NCCSP). We defined non-adherence as no screening test in 2008-2012. We divided adherent women into those screened spontaneously, and those who had a smear after receiving a reminder from the NCCSP. Explanatory variables were extracted from several nationwide registers, and modelled by modified Poisson regression. In total, 34% of women were non-adherent. 31% of native Norwegians were non-adherent, compared to 50% of immigrants. Immigrant status was a strong predictor of non-adherence, but the vast majority of non-adherent women were still native Norwegians. Higher non-adherence rates were associated with having a male general practitioner (GP), a foreign GP, a young GP, and distance to the screening site. Being unmarried, having no children, having lower socioeconomic position and region of residence predicted non-adherence and, to a smaller extent, reminded adherence to screening. In contrast, previous experience with cervical abnormalities substantially increased adherence to screening. The population-based screening programme promotes equity by recruiting women who are less likely to participate spontaneously. However, socioeconomic disparities were evident in a country with a nationwide programme and a policy of equal access to health care. Initiatives aimed at removing practical and financial barriers to equitable screening delivery and at reducing the effect of sociodemographic attributes on screening participation are needed.

Effect of pay-for-performance on cervical cancer screening participation in France

Pay-for-performance (P4P) has been increasingly used across different healthcare settings to incentivize the provision of targeted services. In this study, we investigated the effect of a nationwide P4P scheme for general practitioners implemented in 2012 in France, on cervical cancer screening practices. Using data from a nationally representative permanent sample of health insurance beneficiaries, we analyzed smear test use of eligible women for the years 2006-2014. Our longitudinal sample was an unbalanced panel comprising 180,167 women eligible from 1 to 9 years each. We took into account that during our study period some women were exposed to another incentive for screening participation: the implementation in 2010 of organized screening (OS) in a limited number of areas. To evaluate the effect of P4P, we defined three different measures of smear utilization. For each measure, we specified binary panel-data models to estimate annual probabilities and to compare each estimate to the 2011 baseline level. To explore the combined effect of P4P and OS in areas exposed to both incentives, we computed interaction terms between year dummies and area of residence. We found that P4P had a modest positive effect on recommended screening participation. This effect is likely to be transient as annual smear use, both for the whole sample and among women overdue for screening, increased only in 2013 and decreased again in 2014. The combined effect of P4P and OS on screening participation was not cumulative during the first years of coexistence.

Low Coverage and Disparities of Breast and Cervical Cancer Screening in Thai Women: Analysis of National Representative Household Surveys

BACKGROUND

The coverage of breast and cervical cancer screening has only slightly increased in the past decade in Thailand, and these cancers remain leading causes of death among women. This study identified socioeconomic and contextual factors contributing to the variation in screening uptake and coverage.

MATERIALS AND METHODS

Secondary data from two nationally representative household surveys, the Health and Welfare Survey (HWS) 2007 and the Reproductive Health Survey (RHS) 2009 conducted by the National Statistical Office were used. The study samples comprised 26,951 women aged 30-59 in the 2009 RHS, and 14,619 women aged 35 years and older in the 2007 HWS were analyzed. Households of women were grouped into wealth quintiles, by asset index derived from Principal components analysis. Descriptive and logistic regression analyses were performed.

RESULTS

Screening rates for cervical and breast cancers increased between 2007 and 2009. Education and health insurance coverage including wealth were factors contributing to screening uptake. Lower or non- educated and poor women had lower uptake of screenings, as were young, unmarried, and non-Buddhist women. Coverage of the Civil Servant Medical Benefit Scheme increased the propensity of having both screenings, while the universal coverage scheme increased the probability of cervical screening among the poor. Lack of awareness and knowledge contributed to non-use of both screenings. Women were put off from screening, especially Muslim women on cervical screening, because of embarrassment, fear of pain and other reasons.

CONCLUSIONS

Although cervical screening is covered by the benefit package of three main public health insurance schemes, free of charge to all eligible women, the low coverage of cervical screening should be addressed by increasing awareness and strengthening the supply side. As mammography was not cost effective and not covered by any scheme, awareness and practice of breast self examination and effective clinical breast examination are recommended. Removal of cultural barriers is essential.

Presence, characteristics and equity of access to breast cancer screening programmes in 27 European countries in 2010 and 2014. Results from an international survey

The European Union Council Recommendation of 2 December 2003 on cancer screening suggests the implementation of organised, population-based breast cancer screening programmes based on mammography every other year for women aged 50 to 69years, ensuring equal access to screening, taking into account potential needs for targeting particular socioeconomic groups. A European survey on coverage and participation, and key organisational and policy characteristics of the programmes, targeting years 2010 and 2014, was undertaken in 2014. Overall, 27 countries contributed to this survey, 26 of the 28 European Union member states (92.9%) plus Norway. In 2014, 25 countries reported an ongoing population-based programme, one country reported a pilot programme and another was planning a pilot. In eight countries, the target age range was broader than that proposed by the Council Recommendation, and in three countries the full range was not covered. Fifteen countries reported not reaching some vulnerable populations, such as immigrants, prisoners and people without health insurance, while 22 reported that participation was periodically monitored by socioeconomic variables (e.g. age and territory). Organised, population-based breast cancer screening programmes based on routine mammograms are in place in most EU member states. However, there are still differences in the way screening programmes are implemented, and participation by vulnerable populations should be encouraged.

Breast cancer screening attendance in two Swiss regions dominated by opportunistic or organized screening

BACKGROUND

In Switzerland, the French-speaking region has an organized breast cancer (BC) screening program; in the German-speaking region, only opportunistic screening until recently had been offered. We evaluated factors associated with attendance to breast cancer screening in these two regions.

METHODS

We analyzed the data of 50-69 year-old women (n = 2769) from the Swiss Health Survey 2012. Factors of interest included education level, place of residence, nationality, marital status, smoking history, alcohol consumption, physical activity, diet, self-perceived health, history of chronic diseases and mental distress, visits to medical doctors and cervical and colorectal cancer screening. Outcome measures were dichotomized into ≤2 years since most recent mammography versus >2 years or never.

RESULTS

In the German- and French-speaking regions, mammography attendance within the last two years was 34.9 % and 77.8 %, respectively. In the French region, moderate alcohol consumption (adjusted OR 2.01, 95 % CI 1.28-3.15) increased screening attendance. Compared to those with no visit to a physician during the recent year, women in both regions with such visits attended statistically significantly more often BC screening (1-5 times vs. no visit: German (adjusted OR 3.96, 95 % CI 2.58-6.09); French: OR 7.25, 95 % CI 4.04-13.01). Non-attendance to cervical screening had a negative effect in both the German (adjusted OR 0.44, 95 % CI 0.25-0.79) and the French region (adjusted OR 0.57, 95 % CI 0.35-0.91). The same was true for colorectal cancer screening (German (adjusted OR 0.66, 95 % CI 0.52-0.84); French: OR 0.52, 95 % CI 0.33-0.83). No other factor was associated with BC screening and none of the tests of interaction comparing the two regions revealed statistically significant results.

CONCLUSION

The effect of socio-demographic characteristics, lifestyle, health factors and screening behavior other than mammography on non-attendance to BC screening did not differ between the two regions with mainly opportunistic and organized screening, respectively, and did not explain the large differences in attendance between regions. Other potential explanations such as public promotion of attendance for BC screening, physicians' recommendations regarding mammography participation or women's beliefs should be further investigated.

New algorithm for constructing area-based index with geographical heterogeneities and variable selection: An application to gastric cancer screening

To optimally allocate health resources, policy planners require an indicator reflecting the inequality. Currently, health inequalities are frequently measured by area-based indices. However, methodologies for constructing the indices have been hampered by two difficulties: 1) incorporating the geographical relationship into the model and 2) selecting appropriate variables from the high-dimensional census data. Here, we constructed a new area-based health coverage index using the geographical information and a variable selection procedure with the example of gastric cancer. We also characterized the geographical distribution of health inequality in Japan. To construct the index, we proposed a methodology of a geographically weighted logistic lasso model. We adopted a geographical kernel and selected the optimal bandwidth and the regularization parameters by a two-stage algorithm. Sensitivity was checked by correlation to several cancer mortalities/screening rates. Lastly, we mapped the current distribution of health inequality in Japan and detected unique predictors at sampled locations. The interquartile range of the index was 0.0001 to 0.354 (mean: 0.178, SD: 0.109). The selections from 91 candidate variables in Japanese census data showed regional heterogeneities (median number of selected variables: 29). Our index was more correlated to cancer mortalities/screening rates than previous index and revealed several geographical clusters with unique predictors.

Survey of Participation in Organised Cervical Cancer-Screening Programme in Hungary

AIM

Cervical cancer mortality is high in Hungary, with more than 400 deaths per annum. In 2003, a national cervical cancer screening programme was launched to provide screening services for women who otherwise would not use services themselves. The aim of this survey was to study the socioeconomic and lifestyle factors related to participation in the organised cervical cancer screening programme.

METHODS

A questionnaire-based health survey was conducted using a representative sample of women from 25-65 years of age in 11 Hungarian counties. A logistic regression analysis was used to study the association between participation in the screening programme and socioeconomic and lifestyle factors.

RESULTS

74% (95% CI: 70-77%) of the target population underwent a screening examination within the previous three years. Only 15% (95% CI: 5-35%) of the women, who received an invitation letter and took part in the organised screening programme, had never been previously examined by gynaecologist. The participation rates decreased significantly (p<0.05) for those subjects aged >44 years, retired, participants with low income, living in small settlements, and reported to be heavy smokers.

CONCLUSION

Although the overall proportion of Hungary's population that undergoes regular screening for cervical cancer is not low, the organised national cancer screening programme was ineffective in engaging women not regularly visiting their gynaecologist for examination.

Cervical and breast cancer screening participation for women with chronic conditions in France: results from a national health survey

Background

Comorbidity at the time of diagnosis is an independent prognostic factor for survival among women suffering from cervical or breast cancer. Although cancer screening practices have proven their efficacy for mortality reduction, little is known about adherence to screening recommendations for women suffering from chronic conditions. We investigated the association between eleven chronic conditions and adherence to cervical and breast cancer screening recommendations in France.

Method

Using data from a cross-sectional national health survey conducted in 2008, we analyzed screening participation taking into account self-reported: inflammatory systemic disease, cancer, cardiovascular disease, chronic respiratory disease, depression, diabetes, dyslipidemia, hypertension, obesity, osteoarthritis and thyroid disorders. We first computed age-standardized screening rates among women who reported each condition. We then estimated the effect of having reported each condition on adherence to screening recommendations in logistic regression models, with adjustment for sociodemographic characteristics, socioeconomic position, health behaviours, healthcare access and healthcare use. Finally, we investigated the association between chronic conditions and opportunistic versus organized breast cancer screening using multinomial logistic regression.

Results

The analyses were conducted among 4226 women for cervical cancer screening and 2056 women for breast cancer screening. Most conditions studied were not associated with screening participation. Adherence to cervical cancer screening recommendations was higher for cancer survivors (OR = 1.73 [0.98–3.05]) and lower for obese women (OR = 0.73 [0.57–0.93]), when accounting for our complete range of screening determinants. Women reporting chronic respiratory disease or diabetes participated less in cervical cancer screening, except when adjusting for socioeconomic characteristics. Adherence to breast cancer screening recommendations was lower for obese women and women reporting diabetes, even after accounting for our complete range of screening determinants (OR = 0.71 [0.52–0.96] and OR = 0.55 [0.36–0.83] respectively). The lower breast cancer screening participation for obese women was more pronounced for opportunistic than for organized screening.

Conclusion

We identified conditions associated with participation in cervical and breast cancer screening, even when accounting for major determinants of cancer screening. Obese women participated less in cervical cancer screening. Obese women and women with diabetes participated less in mammographic screening and organized breast cancer screening seemed to insufficiently address barriers to participation.

Electronic supplementary material

The online version of this article (doi:10.1186/s12885-016-2295-0) contains supplementary material, which is available to authorized users.

Assessment of trends in socioeconomic inequalities in cancer screening services in Korea, 1998-2012

BACKGROUND

This study aimed to examine how income-related inequalities in screening services for gastric and colorectal cancer in Korea have changed over the past decades, along with the implementation of the national cancer screening program, and also to quantify each contribution from various socio-demographic factors income-related inequalities with respect to these cancer screening services.

METHODS

Three cycles (1998, 2005, and 2010-2012) of Korea National Health and Nutrition Examination Survey (KNHANES) were utilized. To measure income-related inequalities in the use of gastric and colorectal cancer, individuals over the age of 40 and the age of 50 were included respectively, and the Concentration Index (CI) was calculated for each cycle. To identify and quantify contribution from each socio-demographic factor, decomposition of the CIs was conducted.

RESULTS

Throughout this study, CIs and horizontal inequity indices (HIs) steadily but consistently decreased, suggesting that inequalities and inequities in participation in gastric and colorectal cancer screening were weakened after the implementation of the national public cancer screening program. Decomposition analyses revealed that whereas decreases in inequalities mostly stemmed from income and educational levels; higher income and better education levels are still major contributors to the observed inequalities that influence participation in cancer screening services in Korea.

CONCLUSION

Our empirical findings suggest that, although the policy of reducing out-of-pocket payment for cancer screening may contribute to the observed decreases in inequality, it alone is not likely to completely eliminate inequality. Further research is required to identify barriers that prevent people with lower socioeconomic status from participation in cancer screening, which allows equal access for equal need.

Does the Neighborhood Area of Residence Influence Non-Attendance in an Urban Mammography Screening Program? A Multilevel Study in a Swedish City

BACKGROUND AND AIM

The public health impact of population-based mammography screening programs depends on high participation rates. Thus, monitoring participation rates, as well as understanding and considering the factors influencing attendance, is important. With the goal to acquire information on the appropriate level of intervention for increasing screening participation our study aimed to (1) examine whether, over and above individual factors, the neighborhood of residence influences a woman's mammography non-attendance, and (2) evaluate, whether knowing a woman's neighborhood of residence would be sufficient to predict non-attendance.

METHODS

We analyze all women invited to mammography screening in 2005-09, residing in the city of Malmö, Sweden. Information regarding mammography screening attendance was linked to data on area of residence, demographic and socioeconomic characteristics available from Statistics Sweden. The influence of individual and neighborhood factors was assessed by multilevel logistic regression analysis with 29,901 women nested within 212 neighborhoods.

RESULTS

The prevalence of non-attendance among women was 18.3%. After adjusting for individual characteristics, the prevalence in the 212 neighborhoods was 3.6%. Neighborhood of residence had little influence on non-attendance. The multilevel analysis indicates that 8.4% of the total individual differences in the propensity of non-attendance were at the neighborhood level. However, when adjusting for specific individual characteristics this general contextual effect decreased to 1.8%. This minor effect was explained by the sociodemographic characteristic of the neighborhoods. The discriminatory accuracy of classifying women according to their non-attendance was 0.747 when considering only individual level variables, and 0.760 after including neighborhood level as a random effect.

CONCLUSION

Our results suggest that neighborhoods of residence in Malmö, Sweden (as defined by small-area market statistics (SAMS) areas) do not condition women's participation in population based mammography screening. Thus, interventions should be directed to the whole city and target women with a higher risk of non-attendance.

Impact of opportunistic testing in a systematic cervical cancer screening program: a nationwide registry study

BACKGROUND

Systematic screening for precancerous cervical lesions has resulted in decreased incidence and mortality of cervical cancer. However, even in systematic screening programs, many women are still tested opportunistically. This study aimed to determine the spread of opportunistic testing in a systematic cervical cancer screening program, the impact of opportunistic testing in terms of detecting cytological abnormalities and examine the associations between sociodemography and opportunistic testing.

METHODS

A nationwide registry study was undertaken including women aged 23-49 years (n = 807,624) with a cervical cytology between 2010 and 2013. The women were categorised into: 1) screening after invitation; 2) routine opportunistic testing, if they were either tested more than 9 months after the latest invitation or between 2.5 years and 3 years after the latest cervical cytology and 3) sporadic opportunistic testing, if they were tested less than 2.5 years after the latest cervical cytology. Cytological diagnoses of women in each of the categories were identified and prevalence proportion differences (PPD) and 95% confidence intervals (CIs) were used to explore group differences. Associations between sociodemography and undergoing opportunistic testing were established by multinomial logistic regression.

RESULTS

In total, 28.8% of the cervical cytologies were due to either routine (20.7%) or sporadic (8.1%) opportunistic testing. Among women undergoing routine opportunistic testing, a larger proportion had high-grade squamous intraepithelial abnormalities than invited women (PPD: 0.6%, 95 % CI: 0.03-1.17%). A similar proportion of cytological abnormalities among women undergoing sporadic opportunistic testing and invited women was found. In multivariate analyses, younger age, being single or a social welfare recipient and residence region (North Denmark) were especially associated with opportunistic testing (routine or sporadic).

CONCLUSIONS

One fourth of cervical cytologies in this study were collected opportunistically. Compared to invited women, women undergoing routine opportunistic testing were more likely to be diagnosed with abnormal cytologies. Hence, routine opportunistic testing might serve as an important supplement to the systematic screening program by covering non-participating women who may otherwise be tested with a delay or not tested at all. Among women tested more often than recommended (sporadic testing), no benefits in terms of detecting more cytological abnormalities were identified.

HPV prevalence and risk of pre-cancer and cancer in regular immigrants in Italy: results from HPV DNA test-based screening pilot programs

ᅟ: Immigrants from low- and medium-income countries have a higher risk of cervical cancer due both to barriers in access to screening and to higher human papillomavirus (HPV) prevalence. In the near future many screening programmes in industrialised countries will replace Pap test with HPV as primary test. In order to plan future interventions, it is essential to understand how the HPV screening performs in immigrant women.

METHODS

We conducted a survey on the main performance indicators from some of the HPV DNA-based pilot programmes in Italy, comparing regular immigrant women, identified as women resident in Italy who were born abroad, with women who were born in Italy. All the programmes applied the same protocol, with HPV as stand-alone test starting for women of 25 or 35 to 64 years of age. Cytology triage is performed for positive women; those ASC-US or more severe are referred directly to colposcopy; negative women are referred to repeat HPV after one year.

RESULTS

Overall, 162,829 women were invited, of whom 22,814 were born abroad. Participation was higher for Italy-born than born abroad (52.2% vs. 43.6%), particularly for women over 45 years. HPV positivity rate was higher in immigrants: 7.8% vs. 6.1%, age-adjusted Relative Risk (age-adj RR) 1.18, 95% confidence interval (95% CI) 1.13-1.22. The proportion of women with positive cytology triage was similar in the two groups (42%). Cervical Intraepithelial Neoplasia (CIN) grade 2 or more severe detection rate was higher for born abroad (age-adj RR 1.65, 95% CI 1.45-1.89). The difference was stronger when considering only CIN3 or more severe (age-adj RR 2.29, 95% CI 1.90-2.75). Both HPV positivity and CIN2 or more severe detection rate had a different age curve in born abroad compared with Italy-born: in the former, the risk was almost flat, while in the latter it declined rapidly with age.

CONCLUSION

Compliance with HPV screening is lower for migrant women, who are affected by higher HPV positivity and CIN3 cancer detection rates.

A cross-national comparative study on the influence of individual life course factors on mammography screening

OBJECTIVES

Drawing on insights from the life course perspective, the aim of this paper is to gain a better understanding of persistent socioeconomic inequalities related to the uptake of mammography screening in 13 European countries. We examine whether these inequalities originate in childhood and relate them to the history and progression of each country's screening programs.

METHODS

Retrospective data from the third wave of the Survey of Health, Ageing and Retirement (SHARELIFE) is analyzed by means of event-history analyses to examine the role of childhood preventive health behavior on mammography screening initiation. The results are framed within the context of policy developments concerning mammography screening in each of the separate European countries.

RESULTS

Childhood preventive health care behavior predicts mammography screening in 9 of the 13 countries after conventional measurements of socioeconomic position in childhood and adulthood are accounted for. Net effects of education and income are still found for respectively 6 and 7 countries, but in about half of these countries national screening programs are able to reduce the social gradient. Very strong cohort and period effects are found for every country.

CONCLUSIONS

In a substantial number of the European countries, socioeconomic inequalities in preventive health behavior originate in childhood, which point to the deeply rooted nature of these inequalities. A long-term perspective is essential to further unravel how health policies can reduce or eliminate these persistent inequalities.

Social disparities in access to breast and cervical cancer screening by women living in Spain

OBJECTIVES

To describe uptake of breast and cervical cancer screening by women living in Spain, analyse the possible associated social and health factors, and compare uptake rates with those obtained in previous surveys.

STUDY DESIGN

Cross-sectional study using data from the 2011 Spanish national health survey.

METHODS

Uptake of breast cancer screening was analysed by asking women aged 40-69 years whether they had undergone mammography in the previous two years. Uptake of cervical cancer screening was analysed by asking women aged 25-65 years whether they had undergone cervical cytology in the previous three years. Independent variables included sociodemographic characteristics, and variables related to health status and lifestyle.

RESULTS

Seventy-two percent of women had undergone mammography in the previous two years. Having private health insurance increased the probability of breast screening uptake four-fold [odds ratio (OR) 3.96, 95% confidence interval (CI) 2.71-5.79], and being an immigrant was a negative predictor for breast screening uptake. Seventy percent of women had undergone cervical cytology in the previous three years. Higher-educated women were more likely to have undergone cervical cancer screening (OR 2.59, 95% CI 1.97-3.40), and obese women and women living in rural areas were less likely to have undergone cervical cancer screening. There have been no relevant improvements in uptake rates of either breast or cervical cancer screening since 2006.

CONCLUSION

Uptake of breast and cervical cancer screening could be improved in Spain, and uptake rates have stagnated over recent years. Social disparities have been detected with regard to access to these screening tests, indicating that it is necessary to continue researching and optimizing prevention programmes in order to improve uptake and reduce these disparities.

Cancer detection rates in a population-based, opportunistic screening model, New Delhi, India

BACKGROUND

In India, cancer accounts for 7.3% of DALY's, 14.3% of mortality with an age-standardized incident rate of 92.4/100,000 in men and 97.4/100,000 in women and yet there are no nationwide screening programs.

MATERIALS AND METHODS

We calculated age-standardized and age-truncated (30-69 years) detection rates for men and women who attended the Indian Cancer Society detection centre, New Delhi from 2011-12. All participants were registered with socio-demographic, medical, family and risk factors history questionnaires, administered clinical examinations to screen for breast, oral, gynecological and other cancers through a comprehensive physical examination and complete blood count. Patients with an abnormal clinical exam or blood result were referred to collaborating institutes for further investigations and follow-up.

RESULTS

A total of n=3503 were screened during 2011-12 (47.8% men, 51.6% women and 0.6% children <15 years) with a mean age of 47.8 yrs (±15.1 yrs); 80.5% were aged 30-69 years and 77.1% had at least a secondary education. Tobacco use was reported by 15.8%, alcohol consumption by 11.9% and family history of cancer by 9.9% of participants. Follow-up of suspicious cases yielded 45 incident cancers (51.1% in men, 48.9% in women), consisting of 55.5% head and neck (72.0% oral), 28.9% breast, 6.7% gynecological and 8.9% other cancer sites. The age-standardized detection rate for all cancer sites was 340.8/100,000 men and 329.8/100,000 women.

CONCLUSIONS

Cancer screening centres are an effective means of attracting high-risk persons in low-resource settings. Opportunistic screening is one feasible pathway to address the rising cancer burden in urban India through early detection.

Socioeconomic inequalities in cause-specific mortality in 15 European cities

BACKGROUND

Socioeconomic inequalities are increasingly recognised as an important public health issue, although their role in the leading causes of mortality in urban areas in Europe has not been fully evaluated. In this study, we used data from the INEQ-CITIES study to analyse inequalities in cause-specific mortality in 15 European cities at the beginning of the 21st century.

METHODS

A cross-sectional ecological study was carried out to analyse 9 of the leading specific causes of death in small areas from 15 European cities. Using a hierarchical Bayesian spatial model, we estimated smoothed Standardized Mortality Ratios, relative risks and 95% credible intervals for cause-specific mortality in relation to a socioeconomic deprivation index, separately for men and women.

RESULTS

We detected spatial socioeconomic inequalities for most causes of mortality studied, although these inequalities differed markedly between cities, being more pronounced in Northern and Central-Eastern Europe. In the majority of cities, most of these causes of death were positively associated with deprivation among men, with the exception of prostatic cancer. Among women, diabetes, ischaemic heart disease, chronic liver diseases and respiratory diseases were also positively associated with deprivation in most cities. Lung cancer mortality was positively associated with deprivation in Northern European cities and in Kosice, but this association was non-existent or even negative in Southern European cities. Finally, breast cancer risk was inversely associated with deprivation in three Southern European cities.

CONCLUSIONS

The results confirm the existence of socioeconomic inequalities in many of the main causes of mortality, and reveal variations in their magnitude between different European cities.

Educational inequality in female cancer mortality in Korea

We evaluated the influence of socioeconomic factors on female cancer mortality using death data from the Cause of Death Statistics and the Korean Population and Housing Census databases collected in 2001, 2006, and 2011. We estimated Relative Index of Inequality (RII) of female cancer mortality using Poisson regression analysis. RII greater than 1 indicates increased mortality risk for women at the lowest educational level compared with women at the highest educational level. The RII for cervical cancer mortality was persistently greater than 1 for the entire study period, with a gradual increase over time. Subgroup analysis stratified by age (25-44 and 45-64 yr) revealed that younger women had increased RIIs of mortality due to cervical cancer and ovarian cancer during the entire study period. Older women had higher RII only for cervical cancer mortality, but the value was much lower than that for younger women. The RII for breast cancer mortality was greater than 1 for younger women since 2006. In conclusion, socioeconomic inequality in female cancer mortality has persisted for the last decade in Korea, which was most evident for cervical cancer, and for younger women.

Income-related inequalities and inequities in health care services utilisation in 18 selected OECD countries

A key policy objective in OECD countries is to achieve adequate access to health care for all people on the basis of need. Previous studies have shown that there are inequities in health care services utilisation (HCSU) in the OECD area. In recent years, measures have been taken to enhance health care access. This paper re-examines income-related inequities in doctor visits among 18 selected OECD countries, updating previous results for 12 countries with 2006-2009 data, and including six new countries. Inequalities in preventive care services are also considered for the first time. The indirect standardisation procedure is used to estimate the need-adjusted HCSU and concentration indexes are derived to gauge inequalities and inequities. Overall, inequities in HCSU remain present in OECD countries. In most countries, for the same health care needs, people with higher incomes are more likely to consult a doctor than those with lower incomes. Pro-rich inequalities in dental visits and cancer screening uptake are also found in nearly all countries, although the magnitude of these varies among countries. These findings suggest that further monitoring of inequalities is essential in order to assess whether country policy objectives are achieved on a regular basis.

Reconsidering inequalities in preventive health care: an application of cultural health capital theory and the life-course perspective to the take-up of mammography screening

While there are abundant descriptions of socioeconomic inequalities in preventive health care, knowledge about the true mechanisms is still lacking. Recently, the role of cultural health capital in preventive health-care inequalities has been discussed theoretically. Given substantial analogies, we explore how our understanding of cultural health capital and preventive health-care inequalities can be advanced by applying the theoretical principles and methodology of the life-course perspective. By means of event history analysis and retrospective data from the Survey of Health Ageing and Retirement, we examine the role of cultural capital and cultural health capital during childhood on the timely initiation of mammography screening in Belgium (N = 1348). In line with cumulative disadvantage theory, the results show that childhood cultural conditions are independently associated with mammography screening, even after childhood and adulthood socioeconomic position and health are controlled for. Lingering effects from childhood are suggested by the accumulation of cultural health capital that starts early in life. Inequalities in the take-up of screening are manifested as a lower probability of ever having a mammogram, rather than in the late initiation of screening.

Level of disability, multi-morbidity and breast cancer screening: does severity matter?

BACKGROUND

Women with disability may be less likely screened for breast cancer. Research is limited on the extent to which level of disability and multi-morbidity influence screening.

METHODS

Using a retrospective population-based cohort study design, we linked administrative and self-reported survey data to identify screening in Ontario. The cohort was identified using two waves of the Canadian Community Health Survey (2005 and 2007/08). Fee codes were used to identify mammography imaging. Rates were examined over a two-year period and compared across level of disability and multi-morbidity.

RESULTS

Among 10,363 women identified for study inclusion, 4660 reported some level of disability. Women with moderate disability had higher screening rates (71.4%) than women with no disability (62.0%) and women with severe disability (67.9%). We observed an inverse V-shaped relationship between level of disability and screening across all levels of multi-morbidity. In multivariate regression, women with moderate disability had higher odds of being screened compared to women with no disability (OR 1.2 [1.09-1.38]). Women with severe disability had lower odds of being screened compared to women with moderate disability (OR 0.72 [0.63-0.82]) and no disability (OR 0.88 [0.78-0.99]). Women with one chronic condition had higher odds of screening compared to women with no chronic conditions (OR 1.31 [1.17-1.46]).

CONCLUSIONS

Our findings suggest that severe levels of disability and morbidity are associated with low likelihoods of breast cancer screening.

Challenges to the early diagnosis and treatment of breast cancer in developing countries

This critical review of the literature assembles and compares available data on breast cancer clinical stage, time intervals to care, and access barriers in different countries. It provides evidence that while more than 70% of breast cancer patients in most high-income countries are diagnosed in stages I and II, only 20%-50% patients in the majority of low- and middle-income countries are diagnosed in these earlier stages. Most studies in the developed world show an association between an advanced clinical stage of breast cancer and delays greater than three months between symptom discovery and treatment start. The evidence assembled in this review shows that the median of this interval is 30-48 d in high-income countries but 3-8 mo in low- and middle-income countries. The longest delays occur between the first medical consultation and the beginning of treatment, known as the provider interval. The little available evidence suggests that access barriers and quality deficiencies in cancer care are determinants of provider delay in low- and middle-income countries. Research on specific access barriers and deficiencies in quality of care for the early diagnosis and treatment of breast cancer is practically non-existent in these countries, where it is the most needed for the design of cost-effective public policies that strengthen health systems to tackle this expensive and deadly disease.

Age differences in mammography screening reconsidered: life course trajectories in 13 European countries

BACKGROUND

Breast cancer is the most common cause of cancer mortality among European women. To reduce mortality risk, early detection through mammography screening is recommended from the age of 50 years onwards. Although timely initiation is crucial for cancer prognosis, the temporal dimension has largely been ignored in research. In cross-sectional research designs, it is not clear whether reported age differences reflect 'true' age effects and/or presumed period effects resulting from evolving knowledge and screening programmes.

METHODS

We use longitudinal data from the survey of Health, Ageing and Retirement (SHARELIFE, 2008), which enables to cast light on age differences by providing retrospective information on the age at which women commenced regular mammography screening. Moreover, the cross-national dimension of the SHARE permits framing the results within the context of nationally implemented screening programmes. By means of the Kaplan-Meier procedure, we examine age trajectories for five 10-year birth cohorts in 13 European countries (n = 13 324).

RESULTS

Birth cohorts show very similar age trajectories for each country. Along with the observation that large country differences and country-specific deviations coincide with screening programme characteristics, this suggests strong period effects related to implemented national screening programmes.

CONCLUSION

Age differences in mammography screening generally reflect the period effects of national screening policies. This leaves little room for economic theories about human health capital that leave out the institutional context of preventive health care provision.

To what extent is women's economic situation associated with cancer screening uptake when nationwide screening exists? A study of breast and cervical cancer screening in France in 2010

PURPOSE

In France, larger social inequalities are reported for cervical cancer screening, based on individual practice, than for breast cancer screening for which organized screening exists. Our aim was to investigate the association between women's economic situation and breast and cervical cancer screening.

METHODS

We used data from a large French national health survey conducted in 2010. The economic situation was assessed using the number of adverse economic conditions respondents were facing, based on three variables (low income, lacking food, and perceived financial difficulties). Logistic regressions were adjusted for socioeconomic and sociodemographic characteristics, healthcare use and insurance, and health behaviors.

RESULTS

Mammography was less frequent among women experiencing two or more adverse economic conditions, whereas Pap smear was less frequent among women experiencing at least one adverse economic condition. For both screenings, higher rates were observed among women who lived in the Paris region. Sociodemographic indicators and health behaviors were associated with Pap smear, whereas healthcare use and insurance characteristics were associated with mammography.

CONCLUSIONS

The women's economic situation is an important determinant of breast and cervical cancer screening in France in 2010. Alleviating economic barriers to female cancers screening should be a priority in future programs implementation.

Female preventive practices: breast and smear tests

Breast cancer and cervical cancer are the most common female cancers in Spain and in many developed countries. The main goal of this paper is to identify the determinants of individual decisions on breast screening and smear testing, that is to say, the decision to take a test for the first time and the decision to test with suitable regularity. To that end, we have combined analyses of micro and macro data (the Spanish National Health Survey and Spanish Regional Social Indicators) and employed multilevel estimation models. Among the main results, we highlight the fact that regional public screening programmes improve individual decisions on screening (more women testing for the first time and more women testing regularly) and, furthermore, they generate positive synergies; for example, regional public programmes for smear testing improve individual decisions on both cervical and breast cancer screening. In addition, we conclude that it is not only important to know if the numbers of women undergoing breast screening and smear testing are increasing, it is also important to know if they are testing regularly.

The Possible Effects on Socio-Economic Inequalities of Introducing HPV Testing as Primary Test in Cervical Cancer Screening Programs

Background: Screening with HPV is more effective than Pap test in preventing cervical cancer. HPV as primary test will imply longer intervals and a triage test for HPV positive women. It will also permit the development of self-sampling devices. These innovations may affect population coverage, participation, and compliance to protocols, and likely in a different way for less educated, poorer, and disadvantaged women.

Aim: To describe the impact on inequalities, actual or presumed, of the introduction of HPV-based screening.

Methods: The putative HPV-based screening algorithm has been analyzed to identify critical points for inequalities. A systematic review of the literature has been conducted searching PubMed on HPV screening coverage, participation, and compliance. Results were summarized in a narrative synthesis.

Results: Knowledge about HPV and cervical cancer was lower in women with low socio-economic status and in disadvantaged groups. A correct communication can reduce differences. Longer intervals will make it easier to achieve high-population coverage, but higher cost of the test in private providers could reduce the use of opportunistic screening by disadvantaged women. There are some evidences that inviting for HPV test instead of Pap increases participation, but there are no data on social differences. Self-sampling devices are effective in increasing participation and coverage. Some studies showed that the acceptability of self-sampling is higher in more educated women, but there is also an effect on hard-to-reach women. Communication of HPV positivity may increase anxiety and impact on sexual behaviors, the effect is stronger in low educated and disadvantaged women. Finally, many studies found indirect evidence that unvaccinated women are or will be more probably under-screened.

Conclusion: The introduction of HPV test may increase population coverage, but non-compliance to protocols and interaction with opportunistic screening can increase the existing inequalities.

Changes in the magnitude of social inequality in the uptake of cervical cancer screening in Taiwan, a country implementing a population-based organized screening program

INTRODUCTION

We sought to examine changes in the magnitude of social inequality in the uptake of cervical cancer screening between 2001 and 2009 in Taiwan.

METHODS

We used data from the 2001 and 2009 Taiwan National Health Interview Surveys to calculate the absolute (slope of index of inequality, SII) and relative (relative index of inequality, RII) summary measures of social inequality in the uptake of Pap smear tests to indicate the magnitude of social inequality.

RESULTS

The prevalence of having had a Pap smear during the previous 3 years increased in each age and socioeconomic group from 2001 to 2009. The SII and RII by urbanization and education level decreased significantly, while the SII and RII by income level increased significantly between the two study years. The largest increase in inequality of prevalence from 2001 to 2009 was between women living in suburban and rural areas with highest income level and women live in metropolitan areas with lowest income level.

CONCLUSIONS

The changes in magnitude of social inequality in the uptake of cervical cancer screening differed by indicators of socioeconomic position. Further studies are needed to explore the mechanisms that result in social inequality by different indicators of socioeconomic position.

Persons with disabilities, cancer screening and related factors

The scope of this article is to describe persons with disabilities (PwD) being subjected to cancer screening and the relationship between some social variables and inequalities in performing these tests. A cross-sectional study of cancer screening among PwD was conducted in 2007 with 333 participants interviewed in residence in 4 cities of São Paulo. Variables in the practice of cancer screening, disabilities, gender, age, income of main family breadwinner, ethnicity, use of health services, assistance required, private health insurance, and coverage by the family health program were studied. Frequencies, χ²-test, trend χ² percentages and the Odds Ratios (OR) were used for data analysis. 44% of PwD attended at least one cancer screening at the appropriate time. Persons with visual disabilities and with hearing disabilities were subjected to more screening examinations than those with mobility disabilities and women were attended in screening exams more than men. Persons between the ages of 21 and 60 reported cancer screening more frequently than those between 80 and 97 years of age. The outcomes indicate that PwD have different attitudes toward cancer screening according to the type of disability, gender, and age, which were the variables that directly influenced cancer screening exams.

Do breast cancer risk factors differ among those who do and do not undertake mammography screening?

Objectives

There is considerable interest in whether mammography screening leads to over-diagnosis of breast cancer. However self-selection into screening programmes may lead to risk differences that affect estimates of over-diagnosis. This study compares the breast cancer risk profiles of participants and non-participants of population-based mammography screening. Risk profiles are also compared between those who have and have not used private screening services.

Setting

This study involved 1162 women aged 40–84 who participated in the 2012 Health Omnibus, an annual face-to-face interview-based survey of a representative sample of the population in the state of South Australia.

Methods

Data were collected on participation in mammography screening, demographic characteristics and breast cancer risk factors (including reproductive, familial and lifestyle factors). Missing data were multiply imputed. Factors independently associated with ever having been screened were identified using multivariable logistic regression, for population-based and ad hoc, private mammography screening separately.

Results

Compared with non-participants, participants of population-based screening were more likely to have used hormone replacement therapy (odds ratio [OR] = 3.72), experienced breast biopsy or surgery (OR = 2.22), and be overweight or obese (OR = 1.57). They were less likely to be sufficiently active (OR = 0.57) or be born in a non-English speaking country (OR = 0.50) or aged under 50 (OR = 0.09). Women who were screened privately were more likely to have a family history of breast cancer (OR = 1.66) and have experienced breast biopsy or surgery (OR = 3.17) than those who had not.

Conclusions

South Australian women who participated in the population-based mammography screening have a slightly higher prevalence of breast cancer risk factors. This also applies to those who undertook private screening.

Are prognostic factors more favorable for breast cancer detected by organized screening than by opportunistic screening or clinical diagnosis? A study in Loire-Atlantique (France)

PURPOSE

Comparisons of breast cancer characteristics between organized and opportunistic screening have been limited. This study was designed to compare characteristics of cancers detected by either organized or opportunistic screening as well as clinically diagnosed cancers in Loire-Atlantique (a French administrative entity), from 2003 to 2007.

METHODS

This study is based on data from the population-based Loire-Atlantique Cancer Registry. Stage at diagnosis and prognostic characteristics of carcinomas detected by organized screening were compared, by age-adjusted logistic regressions, to those of cancers detected by opportunistic screening and diagnosed clinically. Analyses were restricted to women aged 50-74 years (the age group targeted by the organized screening program) for the 2003-2007 period.

RESULTS

Between 2003 and 2007, 2864 invasive and 400 in situ breast cancer cases were diagnosed in women aged 50-74 years in Loire-Atlantique. Compared to cancers diagnosed clinically, cancers detected by organized screening were more likely to be in situ (13.7% vs. 3.8%), diagnosed at an early stage (74.4% vs. 51.3%), have a low SBR grade (grade 1: 35.4% vs. 18.5%), and be positive for estrogen-progesterone receptors (68.3% vs. 59.0%). The distribution of stage at diagnosis and prognostic characteristics between organized and opportunistic screening were similar.

CONCLUSION

These findings are consistent with the hypothesis that breast cancers are detected early by organized screening. Cancer characteristics were similar between the two screening modes. Estimating the impact of mammography screening on mortality in Loire-Atlantique should be the object of further investigations.

Breast cancer screening utilization among Eastern European immigrant women worldwide: a systematic literature review and a focus on psychosocial barriers

OBJECTIVE

Many countries host growing Eastern European immigrant communities whose breast cancer preventive behaviors are largely unknown. Thus, we aimed to synthesize current evidence regarding secondary prevention via breast cancer screening utilized by that population.

METHODS

All observational, general population studies on breast cancer screening with Eastern European immigrant women and without any country, language, or age restrictions were identified. Screening modalities included breast self-examination, clinical breast examination, and mammography.

RESULTS

The selected 30 studies were published between 1996 and 2013 and came from Australia, Canada, Denmark, Germany, Israel, the Netherlands, Spain, Switzerland, the UK, and the USA. The reported prevalence of monthly breast self-examination was 0-48%; for yearly clinical breast examination 27-54%; and for biennial mammography 0-71%. The substantial methodologic heterogeneity prevented a meta-analysis. Nonetheless, irrespective of host country, healthcare access, or educational level, the findings consistently indicated that Eastern European immigrant women underutilize breast cancer screening largely because of insufficient knowledge about early detection and an external locus of control regarding decision making in health matters.

CONCLUSIONS

This is a vulnerable population for whom the implementation of culturally tailored breast cancer screening programs is needed. As with other underscreened immigrant/minority groups, Eastern European women's inadequate engagement in prevention is troublesome as it points to susceptibility not only to cancer but also to other serious conditions for which personal action and responsibility are critical.

Methods to increase participation in organised screening programs: a systematic review

BACKGROUND

The European Community recommends the implementation of population-based screening programmes for cervical, breast, and colorectal cancers. This recommendation is supported by many observational studies showing that organised programmes effectively reduce mortality and control the inappropriate use of screening tests. We conducted a systematic review of studies assessing the efficacy of interventions to increase participation in organised population-based screening programs.

METHODS

We included all studies on interventions aimed at increasing screening participation published between 1/1999 and 7/2012. For those published before 1999, we considered the Jepson et al. (2000) review (Health Technol Assess 4:1-133, 2000).

RESULTS

Including studies from the Jepson review, we found 69 with quantitative information on interventions in organised screening: 19 for cervical, 26 for breast, 20 colorectal cancers, and 4 for cervical and breast cancer together.Effective interventions were: postal (breast RR = 1,37 95% Confidence Interval (95% CI): 1.25-1.51; cervical RR = 1.71 95% CI: 1.60-1.83; colorectal RR = 1.33 95% CI: 1.17-1.51) and telephone reminders (with heterogeneous methods for implementation); GP's signature on invitation letter (breast RR = 1.13 95% CI: 1.11-1.16; cervical RR = 1.20 95% CI: 1.10-1.30; colorectal RR = 1.15 95% CI: 1.07-1.24); scheduled appointment instead of open appointment (breast RR = 1.26 95% CI: 1.02-1.55; cervical RR = 1.49 95% CI: 1.27-1.75; colorectal RR = 1.79 95% CI: 1.65-1.93). Mailing a kit for self-sampling cervical specimens increased participation in non-responders (RR = 2.37 95% CI: 1.44-3.90).

CONCLUSION

Although some interventions did prove to be effective, some specific variables may influence their effectiveness in and applicability to organised population-based screening programs.