Social inequalities in cancer survival: A population-based study using the Costa Rican Cancer Registry

Fantin, Romain; Santamaría‐Ulloa, Carolina; Solís, Cristina Barboza

doi:10.1016/j.canep.2020.101695

Cited by 11 publications

(10 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, the season of diagnosis has been used as a proxy for vitamin D, but this convenient method does not account for individual behaviors that might affect vitamin D levels. In addition, there are other factors that affect vitamin D status that we were unable to account for during our analysis, such as diet [ 15 ], ethnicity [ 50 ], education [ 51 ], and supplement intake [ 14 ]. Last, but not least, information on circulating vitamin D concentration is not available in large cancer registry cohorts.…”

Section: Discussionmentioning

confidence: 99%

Is Season of Diagnosis a Predictor of Cancer Survival? Results from the Zurich Cancer Registry

et al. 2022

View full text Add to dashboard Cite

In Switzerland, there is a large seasonal variation in sunlight, and vitamin D deficiency is relatively common during winter. The season of diagnosis may be linked to cancer survival via vitamin D status. Using data from the Cancer Registry of Zurich, Zug, Schaffhausen, and Schwyz with more than 171,000 cancer cases registered since 1980, we examined the association of the season of diagnosis with survival for cancers including prostate (ICD10 code C61; International Categorization of Diseases, version 10), breast (C50), colorectal (C18-21), lung (C34), melanoma (C43), and all sites combined. Cox proportional hazards regression models were used to assess the differences in the all-cause mortality by the season of the diagnosis. Winter was used as the reference season. Hazard ratios (HR) and 95% confidence intervals (CI) were calculated for all the cancers combined (excluding nonmelanoma skin cancer) and for prostate (in men), breast (in women), colorectal, lung cancer, and melanomas, separately. A diagnosis in summer and/or autumn was associated with improved survival in all the sites combined for both sexes (men: HR 0.97 [95% CI 0.96–0.99]; women: HR 0.97 [95% CI 0.94–0.99]) and in colorectal (HR 0.91 [95% CI 0.84–0.99]), melanoma (HR 0.81 [95% CI 0.65–1.00]), and breast cancer (HR 0.91 [95% CI 0.94–0.99]) in women. Our study results suggest that a cancer diagnosis in summer and/or autumn is associated with a better prognosis. The improved seasonal survival coincides with the seasonal variation of sun-induced vitamin D, and vitamin D may play a protective and beneficial role in cancer survival.

show abstract

Section: Discussionmentioning

confidence: 99%

Is Season of Diagnosis a Predictor of Cancer Survival? Results from the Zurich Cancer Registry

et al. 2022

View full text Add to dashboard Cite

show abstract

“…We have previously established that, for medium-lethality cancers like oral cancer, cancer survival was lower in poorer districts than richer districts. 33 Finally, we cannot exclude sub-registrations in incidence, particularly in early-stage cancers, or misclassifications of the cause of death.…”

Section: Discussionmentioning

confidence: 99%

“…31,32 Cancer is the second most common cause of mortality, after cardiovascular disease. 28 Regarding LOP cancers, in 2020, Fantin et al reported that the 5year net survival for head and neck cancers ranged from 43% for lip, oral cavity and pharynx cancers, to 55% for tongue and tonsil, at a mean age of 60, 33 between 2017 and 2019 LOP cancers represented 0.4% of all-cause mortality, and 1.6% of cancer mortality, in Costa Rica. 34 Previous studies have obtained mixed results regarding social inequalities in health in Costa Rica.…”

Section: Introductionmentioning

confidence: 99%

Social inequality in incidence and mortality of malignant neoplasms of lip, oral cavity and pharynx: Is Costa Rica an international paradox?

Solís

Reyes-Carmona

Fantin

2021

Comm Dent Oral Epid

Self Cite

View full text Add to dashboard Cite

Objectives: Low socioeconomic position (SEP) has been associated with higher incidences and mortality of lip, oral cavity and pharynx (LOP) cancers in the vast majority of countries with available data. The origins of health inequalities in cancer are socioeconomic, although they vary by time and country. Evidence from Low-and Middleincome Countries (LMICs) remains scarce. This study aims to identify and describe socioeconomic inequalities in LOP cancers incidence and mortality in Costa Rica.The hypothesis tested is that people leaving in low-SEP districts in Costa Rica have greater incidence and mortality rates of lip, oral cavity and pharynx cancers. Methods: The 10th revision of the International Classification of Diseases (ICD-10) was used to define cancer sites. Data come from a national population-based Cancer Registry with 100% completeness to study incidence. Incidence rate included all new

show abstract

“…Epidemiologic research from other countries that utilizes comparable data from multiple PBCRs reveals large social inequalities in cancer incidence, [42][43][44] mortality and survival. [45][46][47] However, many of these analyses rely on linking PBCR data with sociodemographic information and measures of deprivation that are not collected by PBCRs. We show that many PBCRs in India are collecting these data at the individual level with enormous potential to improve and use these data for equity analyses.…”

Section: Discussionmentioning

confidence: 99%

“…Efforts to ensure the routine, and high quality, measurement of key sociodemographic variables that are comparable across PBCRs in India will enable cross‐sectional and longitudinal analyses of social inequalities in cancer incidence in India. Epidemiologic research from other countries that utilizes comparable data from multiple PBCRs reveals large social inequalities in cancer incidence, 42‐44 mortality and survival 45‐47 . However, many of these analyses rely on linking PBCR data with sociodemographic information and measures of deprivation that are not collected by PBCRs.…”

Section: Discussionmentioning

confidence: 99%

“Registries are not only a tool for data collection, they are for action”: Cancer registration and gaps in data for health equity in six population‐based registries in India

Bhatia

Victora

Beckfield

et al. 2020

Intl Journal of Cancer

View full text Add to dashboard Cite

In India, population‐based cancer registries (PBCRs) cover less than 15% of the urban and 1% of the rural population. Our study examines practices of registration in PBCRs in India to understand efforts to include rural populations in registries and efforts to measure social inequalities in cancer incidence. We selected a purposive sample of six PBCRs in Maharashtra, Kerala, Punjab and Mizoram and conducted semistructured interviews with staff to understand approaches and challenges to cancer registration, and the sociodemographic information collected by PBCRs. We also conducted a review of peer‐reviewed literature utilizing data from PBCRs in India. Findings show that in a context of poor access to cancer diagnosis and treatment and weak death registration, PBCRs have developed additional approaches to cancer registration, including conducting village and home visits to interview cancer patients in rural areas. Challenges included PBCR funding and staff retention, abstraction of data in medical records, address verification and responding to cancer stigma and patient migration. Most PBCRs published estimates of cancer outcomes disaggregated by age, sex and geography. Data on education, marital status, mother tongue and religion were collected, but rarely reported. Two PBCRs collected information on income and occupation and none collected information on caste. Most peer‐reviewed studies using PBCR data did not publish estimates of social inequalities in cancer outcomes. Results indicate that collecting and reporting sociodemographic data collected by PBCRs is feasible. Improved PBCR coverage and data will enable India's cancer prevention and control programs to be guided by data on cancer inequities.

show abstract

Social inequalities in cancer survival: A population-based study using the Costa Rican Cancer Registry

Cited by 11 publications

References 31 publications

Is Season of Diagnosis a Predictor of Cancer Survival? Results from the Zurich Cancer Registry

Is Season of Diagnosis a Predictor of Cancer Survival? Results from the Zurich Cancer Registry

Social inequality in incidence and mortality of malignant neoplasms of lip, oral cavity and pharynx: Is Costa Rica an international paradox?

“Registries are not only a tool for data collection, they are for action”: Cancer registration and gaps in data for health equity in six population‐based registries in India

Contact Info

Product

Resources

About