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Gallbladder cancer (GBC) mortality in Chile is among the highest worldwide. In 2006, the Chilean government launched a programme guaranteeing access to gallbladder surgery (cholecystectomy) for patients aged 35-49 years. We evaluated the impact of this programme on digestive cancer mortality. After conducting an interrupted time series analysis of hospitalisation and mortality data from 2002 to 2018 publicly available from the Chilean Department of Health Statistics and Information, we calculated the change in the proportion of individuals without gallbladder since 10 years. We then estimated age, gender, region, and calendar-year standardised mortality ratios (SMRs) as a function of the change in the proportion of individuals without gallbladder. The cholecystectomy rate increased by 45 operations per 100,000 persons per year (95%CI 19-72) after the introduction of the health programme. Each 1% increase in the proportion of individuals without gallbladder since 10 years was associated with a 0.73% decrease in GBC mortality (95% CI -1.05% to -0.38%), but the negative correlation was limited to women, southern Chile and age over 60. We also found decreasing mortality rates for extrahepatic bile duct, liver, oesophageal and stomach cancer with increasing proportions of individuals without gallbladder. To conclude, 12 years after its inception, the Chilean cholecystectomy programme has markedly and heterogeneously changed cholecystectomy rates. Results based on aggregate data indicate a negative correlation between the proportion of individuals without gallbladder and mortality due to gallbladder and other digestive cancers, which requires validation using individual-level longitudinal data to reduce the potential impact of ecological bias.

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OBJECTIVES: The burden of cancer is increasing rapidly in Latin America. Primary care has an essential role in cancer prevention, but implementation levels of prevention practices are not well known. This study evaluated implementation levels and associated factors of cancer preventive practices in primary care over time. STUDY DESIGN: The study incorporated a retrospective multicentre cohort study. METHODS: A population of 59,949 patients registered at three primary care clinics was followed from January 2018 to December 2022 in Santiago, Chile. We studied human papillomavirus (HPV) and hepatitis B virus (HBV) immunisation, brief counselling for smoking cessation and alcohol consumption, and cervical and breast cancer screening practices. Standardised electronic medical records were utilised as the source of information. Social, clinical, and organisational factors associated with prevention practices were studied. RESULTS: The cohort attrition level was 17.1%. Most of the population was of a low socioeconomic status, and 70% visited a primary health centre yearly. Implementation rates of immunisation practices were 90.84% for HPV and 80.94% for HBV in 2022. In contrast, brief counselling for smoking and alcohol consumption was below 20% during the study period. Cervical cancer screening decreased by 25.58% between 2018 and 2022, whereas breast cancer screening reached only 41.71% of the target population. Opportunistic medical visits were strongly associated with brief counselling and breast cancer screening. CONCLUSION: Implementation practices for cancer prevention in a Chilean primary care cohort are high for immunisation and very low for brief counselling and screening practices. A comprehensive non-medical-based model is needed to improve cancer prevention in primary care.

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Introduction: Breast cancer (BC) is the most common cancer among women globally. Vitamin D has been considered a protective factor; however, its relationship with any aspect of the disease remains controversial. Methods: A cross-sectional, single-center clinical study was conducted between 2015 and 2018, including 141 women diagnosed with BC and 239 women in the control group, with mean ages of 43.1 and 41.7 years, respectively (p = 0.103). Serum levels of vitamin D and lipid profile were measured. Clinical and nutritional data were obtained through interviews and medical records. Results: The vitamin D dosage presented an average value of 25.5 ng/mL and 31.0 ng/mL in the case and control groups, respectively (p < 0.001). The vitamin D cut-off point for discriminating the presence of BC was 27.45 ng/mL. Additionally, low-density lipoprotein cholesterol levels were higher in the case group (121.4 mg/dL) compared to the control group (110.7 mg/dL) (p = 0.002), whereas high-density lipoprotein cholesterol levels were lower in the case group (47.6 mg/dL) compared to the control group (53.3 mg/dL) (p = 0.001). Alcohol consumption was significantly higher in the case group than in the control group (2.7 vs. 5.3 doses/day; p < 0.001). Conclusion: The results indicate a significant association between lower vitamin D levels and BC, persisting after multivariate analysis (p < 0.001). These findings could inform prevention strategies, highlighting the importance of maintaining adequate vitamin D levels and potentially identifying a risk group.

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Background: Persons living with HIV (PLWH) have a higher risk of persistent infection with human papillomavirus (HPV) and anal cancer. We evaluated knowledge and awareness of HPV infection and risk factors for anal cancer among PLWH in Puerto Rico (PR). Methods: Data from a cross-sectional study (2020-2021) were analyzed (n=212). Inclusion criteria included PLWH, aged ≥ 26 years, and living in PR. Telephone interviews collected information on sociodemographic, lifestyle and clinical characteristics. Two 13-item scales were used to assess knowledge of HPV and anal cancer risk factors; adequate knowledge for both scales were defined as scoring >70%. Logistic regression models using generalized linear models were used to determine the association between 1) HPV infection awareness, 2) HPV infection knowledge, and 3) Anal cancer risk factors knowledge. Results: The median age was 54 years (IQR: 46,58), 67.5% were male, 71.7% reported having an income <$20,000, and 54.3% had an education level of more than high school. HPV awareness was high (82.1%), but only 40.2% and 3.8% had adequate knowledge of HPV and anal cancer risk factors, respectively. In adjusted logistic regression models, men who have sex with men (OR: 1.26, 95%CI: 1.07-1.47) and women (OR: 1.35, 95%CI: 1.15-1.59) aged ≥50 years had higher odds of HPV awareness than heterosexual men in that age group. Moreover, those with history of anal Pap test aged <50 years had more HPV awareness (OR 1.34, 95%CI: 1.08-1.66) than their counterparts. Adequate HPV knowledge was higher among participants with an education level of more than high-school (OR:1.28, 95%CI: 1.10-1.50) and with a history of HPV diagnosis (OR:1.33, 95%CI: 1.08-1.65) than their counterparts. In addition, people with good/very good/excellent health perception had higher odds of HPV knowledge (OR:1.23, 95%CI: 1.03-1.47) than those who reported poor/regular health perception. For anal cancer risk factors, PLWH for ≥15 years had increased odds of having adequate knowledge (OR:1.07, 95%CI: 1.02-1.14) than their counterparts. Conclusions: Despite high awareness of HPV, limited knowledge about HPV and anal cancer risk factors was observed among PLWH. Results from our study highlight the need for educational efforts within this population as an anal cancer prevention strategy.

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OBJECTIVE: To describe the implementation of an oral cancer screening program at the Barretos Cancer Hospital (BCH) and present the outcome based on data obtained from 2014 to 2020. MATERIALS AND METHODS: The residents of the Regional Health District of Barretos (DRS-V) were personally invited by community health agents or nurses, and among 13,973 people, 15,222 oral examinations were carried out over the years in 18 of its municipalities. Oral examinations were performed at the Mobile Dental Unit and at the Prevention Department of the BCH. Inclusion criteria were being 35 years of age or older, having a personal history of tobacco or alcohol consumption, or having a lesion in the oral cavity found by community health agent or self-reported, regardless of age or risk factors. RESULTS AND CONCLUSION: The main result of our study was the stages of oral cancer among screen detected cases were smaller compared to cases in the hospital registry, in the state and in Brazil. Oral cancer detection rate per 1,000 oral examinations was 10.7.The early stages of oral cancer found by screening in primary care facilities or using mobile units suggest that, when organized, screening may improve the prognosis of oral cancer.

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PURPOSE: The relationship between engaging in two domains of cancer-preventive behaviors, lifestyle behaviors and colonoscopy screening, is unknown in Hispanic adults. Accordingly, the study examined the association between lifestyle and colonoscopy screening in Hispanic adults along the Texas-Mexico border, where there is suboptimal colorectal cancer prevention. METHODS: Lifestyle behavior adherence and compliance with colonoscopy screening schedules were assessed using 2013-2023 data from the Cameron County Hispanic Cohorta population-based sample of Hispanic adults living along the Texas-Mexico border. The 2018 World Cancer Research Fund scoring system characterized healthy lifestyle engagement. Multivariable logistic regression quantified the association between lifestyle behaviors and colonoscopy screening. RESULTS: Among 914 Hispanic adults, there was a mean adherence score of 2.5 out of 7 for recommended behaviors. Only 33.0% (95% CI 25.64-41.39%) were up-to-date with colonoscopy. Complete adherence to fruit and vegetable (AOR [adjusted odds ratio] 5.2, 95% CI 1.68-16.30; p = 0.004), fiber (AOR 2.2, 95% CI 1.06-4.37; p = 0.04), and ultra-processed foods (AOR 2.8, 95% CI 1.30-6.21; p = 0.01) consumption recommendations were associated with up-to-date colonoscopy screening. Having insurance versus being uninsured (AOR 10.8, 95% CI 3.83-30.62; p < 0.001) and having local medical care versus in Mexico (AOR 7.0, 95% CI 2.26-21.43; p < 0.001) were associated with up-to-date colonoscopy. CONCLUSIONS: Adherence to dietary lifestyle recommendations was associated with being up-to-date with colonoscopy screenings. Those with poor dietary behavior are at risk for low-colonoscopy use. Improving lifestyle behaviors may complement colonoscopy promotion interventions. Healthcare accessibility influences up-to-date colonoscopy prevalence. Our findings can inform cancer prevention strategies for the Hispanic population.

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This study aimed to assess the use of colorectal cancer (CRC) tests for prevention and early detection, alongside exploring the associated barriers to these tests. A stratified national survey was conducted in Chile, involving 1893 respondents (with a 2.3% error margin and 95% confidence interval). Logistic and multinomial regression analyses were employed to examine variations in test utilization likelihood and barrier. We found that the key determinants for undergoing CRC tests included age, health status, possession of private health insurance, and attainment of postgraduate education. Notably, 18% and 29% of respondents covered by public and private insurance, respectively, cited personal prevention as the primary motivation for test uptake. The principal obstacle identified was lack of knowledge, mentioned by 65% of respondents, while 29% and 19% of the publicly and privately insured respectively highlighted lack of access as a barrier. The results of this study provide valuable insights into factors influencing CRC screening, aiming to inform public health policies for expanding national coverage beyond diagnosis and treatment to encompass preventive measures.

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The development of antiprogestins was initially a gynecological purpose. However, since mifepristone was developed, its application for breast cancer treatment was immediately proposed. Later, new compounds with lower antiglucocorticoid and antiandrogenic effects were developed to be applied to different pathologies, including breast cancer. We describe herein the studies performed in the breast cancer field with special focus on those reported in recent years, ranging from preclinical biological models to those carried out in patients. We highlight the potential use of antiprogestins in breast cancer prevention in women with BRCA1 mutations, and their use for breast cancer treatment, emphasizing the need to elucidate which patients will respond. In this sense, the PR isoform ratio has emerged as a possible tool to predict antiprogestin responsiveness. The effects of combined treatments of antiprogestins together with other drugs currently used in the clinic, such as tamoxifen, CDK4/CDK6 inhibitors or pembrolizumab in preclinical models is discussed since it is in this scenario that antiprogestins will be probably introduced. Finally, we explain how transcriptomic or proteomic studies, that were carried out in different luminal breast cancer models and in breast cancer samples that responded or were predicted to respond to the antiprogestin therapy, show a decrease in proliferative pathways. Deregulated pathways intrinsic of each model are discussed, as well as how these analyses may contribute to a better understanding of the mechanisms involved.

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In Chile, the cancer has become the main cause of death; the Northern Regions of Chile do not escape to this rea- lity. Both nationally and in the North of Chile, digestives cancers constitute the main cause of death over cancers of other organs. There is currently a National Cancer Law and a National Cancer Plan that provide the legal and technical framework for the implementation of preventive strategies that include the establishment of screening tests according to the local reality of each health service, however, there is still a limitation in the resources avai- lable for its implementation. Local experiences, such as the one carried out in the Region of Antofagasta , have shown in Colorectal Cancer (CRC) that by using a quantitative fecal immunochemcal test for occult blood in stools (FIT) as a screening method, asymptomatic patients carrying CRC can be detected in early stages of their disease, it also allows us to detect patients with CRC precursor lesions (adenomas with high and/or low grade dysplasias). It is important to continue advancing for the moment with the support of Regional Governments in obtaining fi- nancial resources to implement the different screening tests with clinical evidence for the main digestive cancers that affect the population of the Northern Macrozone of Chile.

En Chile el cáncer se ha convertido en la principal causa de muerte, las Regiones del Norte de Chile no escapan a esta realidad. Tanto a nivel Nacional como en el Norte de Chile, los cánceres digestivos en grupo constituyen la principal causa de muerte por sobre los cánceres de otros órganos. Existe actualmente una Ley Nacional del Cáncer y un Plan Nacional del Cáncer que dan el marco legal y técnico para la implementación de estrategias preventivas que incluyen la instauración de test de tamizajes o cribados según la realidad local de cada servicio de salud, sin embargo, aún existe limitación en los recursos disponibles para su implementación. Experiencias locales como la realizada en la Región de Antofagasta, han demostrado que en Cáncer Colorrectal (CCR), mediante el uso de un test inmunoquímico de sangre oculta en deposiciones cuantitativo (TSODi) como método de tamizaje, se pueden detectar pacientes asintomáticos portadores de CCR en etapas precoces de su enfermedad, además, permite detectar pacientes portadores de lesiones precursoras del CCR (adenomas con displasias de alto y/o bajo grado). Es importante seguir avanzando por el momento con apoyo de Gobiernos Regionales en la obtención de los recursos financieros para implementar los distintos test de tamizajes con evidencia clínica para los principales cánceres digestivos que afectan a la población de la Macrozona Norte de Chile

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O câncer de colo de útero é uma neoplasia comum e letal para mulheres no Brasil, com uma estimativa de 17 mil novos casos entre 2023 e 2025. A região Norte apresenta as maiores taxas de incidência e mortalidade, refletindo desigualdades no acesso a serviços de saúde. A detecção precoce e a vacinação são essenciais para a prevenção, mas a cobertura é insuficiente quando se trata de povos indígenas. Trata-se de um estudo descritivo que busca analisar a proporção de exames citopatológicos em mulheres indígenas de 25 a 64 anos, considerando dois triênios, de acordo com as recomendações da Organização Mundial de Saúde (OMS), com base nos dados do Sistema de Informação do Câncer. Os dados foram obtidos a partir de dados populacionais do Distrito Especial de Saúde Indígena do Amapá e Norte do Pará. No primeiro triênio (2018-2020), a proporção de exames foi de 3,37% no DSEI AMP e 0% em Pedra Branca do Amapari, município de referência do povo wajãpi. No segundo triênio (2021-2023), essas proporções aumentaram para 21,95% e 52,38%, respectivamente. A melhora significativa nos indicadores de realização de exames junto aos Wajãpi, é atribuída ao Projeto de Rastreamento de Câncer do Colo do Útero, realizado pelo Instituto de Pesquisa e Formação Indígena (Iepé) em cooperação com o DSEI AMP. Ainda que a colaboração entre as comunidades wajãpi, Iepé e DSEI AMP tenha produzido uma melhoria nos índices, os desafios permanecem, especialmente em relação à cobertura e à qualidade da assistência à saúde fornecida aos povos indígenas.

Cervical cancer is a common and lethal neoplasm for women in Brazil, with an estimated 17 thousand new cases between 2023 and 2025. The North region has the highest incidence and mortality rates, reflecting inequalities in access to health services . Early detection and vaccination are essential for prevention, but coverage is insufficient when it comes to indigenous peoples. This is a descriptive study that seeks to analyze the proportion of cytopathological exams in indigenous women aged 25 to 64 years, considering two three-year periods, in accordance with the recommendations of the World Health Organization (WHO), based on data from the Information System of Cancer. The data were obtained from population data from the Special Indigenous Health District of Amapá and Norte do Pará. In the first three years (2018-2020), the proportion of exams was 3.37% in DSEI AMP and 0% in Pedra Branca do Amapari, a reference municipality for the Wajãpi people. In the second three-year period (2021-2023), these proportions increased to 21.95% and 52.38%, respectively. The significant improvement in indicators for testing among the Wajãpi is attributed to the Cervical Cancer Tracking Project, carried out by the Institute of Indigenous Research and Training (Iepé) in cooperation with the DSEI AMP. Although the collaboration between the Wajãpi, Iepé and DSEI AMP communities has produced an improvement in rates, challenges remain, especially in relation to the coverage and quality of health care provided to indigenous peoples.

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Cancer is a major public health problem in South America. The cancer mortality burden is increasing in the region due to its presentation at later stages, which is related to limited access to cancer care. This results in a noticeable inequity in provisions of cancer care including specialized screening programs, as well as cancer-related treatments such as personalized medicine, radiation therapy, palliative care, and survivorship services. Consequently, South America faces many challenges for cancer control, most of them deriving from a lack of funding and unequal distribution of resources and cancer services, affecting mostly the underserved populations in the region.

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Objetivo: identificar, na literatura científica, as estratégias utilizadas por enfermeiros da Atenção Primária para a prevenção do câncer de colo do útero. Métodos: revisão integrativa nas bases de dados EMBASE, LILACS (BVS), SCOPUS e Web of Science, entre março e abril de 2023. Após a busca, seguiu-se com leitura na íntegra dos artigos selecionados e extração dos dados para análise. A amostra final foi constituída por 5 estudos. Resultados: as principais estratégias utilizadas foram intervenções educativas, com predominância de palestras e posterior convite ou coleta de material para a realização do exame preventivo. Também foram utilizadas rodas de conversa (círculo de cultura), orientações por contato telefônico e oferta de ficha clínica auto preenchível na consulta de enfermagem. Conclusões: os estudos possibilitaram identificar estratégias positivas na prevenção do câncer de colo do útero, podendo direcionar enfermeiros a investir cada vez mais em metodologias voltadas a uma maior autonomia das mulheres

Objective: to identify, in the scientific literature, the strategies used by primary care nurses to prevent cervical cancer. Methods: An integrative review of the EMBASE, LILACS (BVS), SCOPUS, and Web of Science databases between March and April 2023. After the search, the selected articles were read in full, and the data were extracted for analysis. The final sample consisted of 5 studies. Results: the main strategies used were educational interventions, with a predominance of lectures and subsequent invitations or collection of material to carry out the preventive exam. Conversation circles (culture circles), telephone guidance, and the provision of a self-completed clinical form during the nursing consultation were also used. Conclusions: the studies made it possible to identify positive strategies for preventing cervical cancer, which could direct nurses to increasingly invest in methodologies aimed at increasing women's autonomy

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Objective: To explore factors associated with communication and information-seeking after receipt of skin cancer prevention information among Hispanic individuals. Methods: Multivariable logistic regression was used to analyze existing data on demographics, personal experience, salience, and beliefs variables collected from Hispanic individuals to determine independent associations with sharing and seeking information about skin cancer prevention. Results: Of 578 participants, 53% reported any communication about skin cancer prevention behaviors or skin cancer genetic risk; and 31% and 21% sought additional information about preventive behaviors or genetic risk, respectively. Female sex, greater perceived severity, higher comparative chance of getting skin cancer, and lower health literacy were associated with greater communication, while having no idea of one's own skin cancer risk was related to less communication. Greater health numeracy and higher cancer worry were associated with information-seeking about prevention behaviors and genetic risk. Conclusion: Up to half of participants reported communication or information-seeking, although factors associated with specific activities differed. Future studies should evaluate how to promote communication behaviors in the Hispanic community and how sharing and seeking information influence an individual's network prevention practices. Innovation: Several factors related to communication behaviors among Hispanic people after obtaining skin cancer prevention information were identified.Trial registration: This trial was registered on clinicaltrials.gov (NCT03509467).

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Skin cancer incidence is increasing worldwide. Late adolescence and young adulthood are fundamental stages of life to acquire good sun exposure practices, regarding both personal involvement in skin cancer prevention and being a role model for others, especially in a health education environment. This descriptive cross-sectional study is based on the validated CHACES questionnaire to study sun exposure and photoprotection behavior among students and teachers at the School of Health Sciences in the National University of Chimborazo, Riobamba (Ecuador). University members (814 students (89.8 %) and 93 teachers (10.2 %)) were studied, with a predominance of females and light-skin phototypes in both groups. Similar results were obtained regarding sun exposure, with higher recreative exposure in the teachers' group and higher occupational exposure in students. However, students significantly showed lower avoiding midday sun (41.9 % vs 60.9 %), and lower use of sunglasses (10.1 % vs. 41.6 %). Attitudes towards the sun and photoprotection knowledge issues were also equivalent between students and teachers (6.1/10 vs 6.2/10). Students' sunburn rate last year reaches 88.4 % and 52.7 % in teachers (p < 0.001). Using a multivariable logistic regression model, we identified risk factors associated with a greater risk of sunburn in our population. This study highlights areas to be improved regarding knowledge, attitudes and, especially, practices of photoprotection, among students and teachers at the University of Chimborazo. These results point out that awareness-raising campaigns should be implemented to reduce sunburns, morbidity and mortality of skin cancer in this environment.

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In 2006, the human papillomavirus (HPV) vaccine was approved for use as an effective intervention for reducing the risk of developing cervical cancer; however, its successful implementation is dependent on acceptability. This study aims to provide a comprehensive understanding of the reasons that favor or do not favor the acceptability of HPV vaccines. METHODS: We conducted a systematic review and meta-summary of qualitative research on 16 databases. A total of 32 articles that considered the perspectives of vaccine users, their parents, and the professionals who care for them were reviewed. Synthesis was conducted as described by Sandelowski and Barroso. RESULTS: We used inductive and deductive methods to obtain a total of 22 dimensions, out of which three issues stood out that should be considered to improve acceptability and are formed by three groups of study, namely, information about the vaccine, fears and side effects, and sexuality associated with the vaccine. CONCLUSIONS: Acceptability, as well as adherence to HPV vaccination, is a complex concept. This review highlights the perspectives of the three sets of actors involved in the process (i.e., users, parents, and professionals) and views these factors in relation to acceptability as a guide for new interventions.

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BACKGROUND: Cancer is a public health issue in Brazil. To mitigate exposure to risk factors, change habits and ensure access to cancer care, an increasing number of bills are presented every year. This article analyzes the changes proposed in these bills, portraying how the representatives perceive and respond to the challenges imposed by cancer on the healthcare system and society. METHODS: Through a systematic search on the Brazilian House of Representatives website, this exploratory study examines cancer-related bills presented up to 2022. RESULTS: Of 1311 bills identified, 310 met the inclusion criteria and were categorized based on their content. The increasing annual number of cancer bills reflects the interest of representatives on the topic. The cancer types addressed correspond to the most prevalent ones, except for the colorectal. The most common strategy is primary prevention (n: 129), proposing the reduction of risk factors exposure or the promotion of protective ones, followed by tertiary (n: 106) and secondary (n: 36) strategies, targeting, respectively, cancer treatment/management and its early diagnosis/detection. On the nature of proposed changes, most seek to implement increased healthcare access (n: 125), production/sale (dis)incentives for goods containing carcinogens (n: 60), and fiscal/financial (dis)incentives (n: 53). CONCLUSION: The identified gaps - such as the limited use of data and evidence to support what is proposed, overlapping but fragmented efforts with previous bills, scarce efforts directly addressing the determinants of health, and the low rate of conversion to law - entails opportunities to advance the Legislative propositions. POLICY SUMMARY: To effectively respond to cancer-related challenges, is essential that the Legislative branch takes into account what is already being proposed or being left out, inputs from society, real-world data, and the results produced by the multisectoral policies in place.

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Breast cancer (BC) has surpassed lung cancer as the most diagnosed cancer and, in terms of mortality, is the fifth leading cause with 684,996 new deaths (6.7% of all cancer-related deaths) and the highest mortality amongst all cancers (15.5%) in women. Selective estrogen-receptor modulators (SERMs) have been used for the last thirty years for estrogen receptor-positive (ER+) BC prevention and treatment. Tamoxifen (TAM), the most widely used SERM, is orally administered and its long-term oral administration has been associated to toxicity and adverse side effects. Endoxifen (EDX) is one of the known active metabolites of TAM, with an affinity to ERα 100 times higher than TAM. Furthermore, EDX has shown antiproliferative activity against the ER+ BC cell line MCF-7. Alternative administration routes that avoid the metabolic processing of TAM seem an appealing alternative to its oral administration. With this aim, we have prepared a polymeric gel-like solution of Pluronic® F127 as vehicle for topical administration of EDX. In order to shed light on the potential clinical use of this formulation, we have compared it with the standard pharmaceutical form, i.e. orally administered TAM. The biodistribution, antitumor efficacy and toxic effects of topical EDX and oral TAM were evaluated in ER+ tumor xenograft athymic nu/nu mouse models. The results showed a statistically significant antitumor effect and reduced toxicity of topical EDX as compared to oral TAM or empty F127 gel. This novel administration route of SERMs could also have a strong impact in the prevention of BC at early development stages and could help to ameliorate the mortality and morbidity related to this disease.

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BACKGROUND: Low adherence to triage after positive screening is a widespread problem for cervical cancer screening programs in Low- and Middle-income Countries. Adherence to cytology-based triage can be challenging, especially among women with self-collected tests. SMS-based interventions are accepted by women and can increase screening uptake. The ATICA study was an effectiveness-implementation hybrid type I trial, combining a cluster randomized controlled trial (RCT) with a mixed-methods implementation evaluation involving quantitative and qualitative methods. Although the RCT provided evidence regarding the effectiveness of the SMS-based intervention, less is known about its acceptability, relevance, and usefulness from the women´s perspective. METHODS: We carried out a cross-sectional study based on a structured questionnaire among HPV-positive women who were enrolled in ATICA's intervention group. We measured acceptability, appropriateness, and message content comprehension. Also, we evaluated if the SMS message was considered a cue to encourage women to pick up their HPV test results and promote the triage. RESULTS: We interviewed 370 HPV-positive women. Acceptability of SMS messages among women who had received at least one message was high (97%). We found high levels of agreement in all appropriateness dimensions. More than 77% of women showed high comprehension of the content. Among women who received at least one SMS message, 76% went to the health center to pick up their results. Among those who got their results, 90% reported that the SMS message had influenced them to go. We found no significant differences in acceptability, appropriateness or message comprehension between women who adhered to triage and those who did not adhere after receiving the SMS messages. CONCLUSION: The intervention was highly acceptable, and women reported SMS was an appropriate channel to be informed about HPV test results availability. SMS was also a useful cue to go to the health center to pick up results. The implementation did not encounter barriers associated with the SMS message itself, suggesting the existence of other obstacles to triage adherence. Our results support the RCT findings that scaling up SMS is a highly acceptable intervention to promote cervical screening triage adherence.

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Worldwide, the coronavirus has intensified the management problems of health services, significantly harming patients. Some of the most affected processes have been cancer patients' prevention, diagnosis, and treatment. Breast cancer is the most affected, with more than 20 million cases and at least 10 million deaths by 2020. Various studies have been carried out to support the management of this disease globally. This paper presents a decision support strategy for health teams based on machine learning (ML) tools and explainability algorithms (XAI). The main methodological contributions are: first, the evaluation of different ML algorithms that allow classifying patients with and without cancer from the available dataset; and second, an ML methodology mixed with an XAI algorithm, which makes it possible to predict the disease and interpret the variables and how they affect the health of patients. The results show that first, the XGBoost Algorithm has a better predictive capacity, with an accuracy of 0.813 for the train data and 0.81 for the test data; and second, with the SHAP algorithm, it is possible to know the relevant variables and their level of significance in the prediction, and to quantify the impact on the clinical condition of the patients, which will allow health teams to offer early and personalized alerts for each patient.

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