Dataset Information

A Comprehensive Assessment of the Racial and Ethnic Disparities in the Incidence of Gastric Cancer in the United States, 1992-2014.

ABSTRACT:

Purpose

This study aimed to evaluate the racial and ethnic disparities in the incidence of gastric cancer and their temporal trends in the United States.

Materials and methods

Using data from 13 cancer registries in the Surveillance, Epidemiology, and End results database, we assessed such disparities during 1992-2014 in the United States using a variety of disparity metrics.

Results

The age-standardized incidence rate of non-cardia gastric cancer was highest in Asian and Pacific Islanders, while the incidence of cardia gastric was highest in non-Hispanic whites in men and was similarly low in all groups in women. The incidence of non-cardia gastric cancer decreased in all groups over time, particularly in Asian and Pacific Islanders (on average by 3% per year). The incidence of cardia gastric remained relatively stable in virtually all racial/ethnic groups. The racial and ethnic disparities in gastric cancer incidence steadily decreased over time as measured on the absolute scale, which was mainly driven by the reduced disparities in non-cardia gastric cancer. The range difference in the incidence of gastric cancer decreased on average by 4.1% per year in men and by 2.6% per year in women from 1992 to 2014. The between group variance decreased by 5.6% per year in men and by 3.4% per year in women. The relative-scale disparity measures generally remained stable over time.

Conclusion

This study demonstrates decreased racial and ethnic disparities in the incidence of gastric cancer over time in the United States, particularly as measured on the absolute scale.

SUBMITTER: Yao Q

PROVIDER: S-EPMC6473285 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

A Comprehensive Assessment of the Racial and Ethnic Disparities in the Incidence of Gastric Cancer in the United States, 1992-2014.

Yao Qiang Q Qi Xiaona X Cheng Wen W Xie Shao-Hua SH

Cancer research and treatment 20180619 2

<h4>Purpose</h4>This study aimed to evaluate the racial and ethnic disparities in the incidence of gastric cancer and their temporal trends in the United States.<h4>Materials and methods</h4>Using data from 13 cancer registries in the Surveillance, Epidemiology, and End results database, we assessed such disparities during 1992-2014 in the United States using a variety of disparity metrics.<h4>Results</h4>The age-standardized incidence rate of non-cardia gastric cancer was highest in Asian and P ...[more]

PMID: 29921118

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Project description:BackgroundStark racial disparities in disease incidence among American women remain a persistent public health challenge. These disparities likely result from complex interactions between genetic, social, lifestyle, and environmental risk factors. The influence of environmental risk factors, such as chemical exposure, however, may be substantial and is poorly understood.ObjectivesWe quantitatively evaluated chemical-exposure disparities by race/ethnicity, life stage, and time in United States (US) women (n = 38,080) by using biomarker data for 143 chemicals from the National Health and Nutrition Examination Survey (NHANES) 1999-2014.MethodsWe applied a series of survey-weighted, generalized linear models using data from the entire NHANES women population along with cycle and age-group stratified subpopulations. The outcome was chemical biomarker concentration, and the main predictor was race/ethnicity with adjustment for age, socioeconomic status, smoking habits, and NHANES cycle.ResultsCompared to non-Hispanic White women, the highest disparities were observed for non-Hispanic Black, Mexican American, Other Hispanic, and Other Race/Multi-Racial women with higher levels of pesticides and their metabolites, including 2,5-dichlorophenol, o,p'-DDE, beta-hexachlorocyclohexane, and 2,4-dichlorophenol, along with personal care and consumer product compounds, including parabens and monoethyl phthalate, as well as several metals, such as mercury and arsenic. Moreover, for Mexican American, Other Hispanic, and non-Hispanic black women, there were several exposure disparities that persisted across age groups, such as higher 2,4- and 2,5-dichlorophenol concentrations. Exposure levels for methyl and propyl parabens, however, were the highest in non-Hispanic black compared to non-Hispanic white children with average differences exceeding 4-fold. Exposure disparities for methyl and propyl parabens are increasing over time in Other Race/Multi-Racial women while fluctuating for non-Hispanic Black, Mexican American, and Other Hispanic. Cotinine levels are among the highest in Non-Hispanic White women compared to Mexican American and Other Hispanic women with disparities plateauing and increasing, respectively.DiscussionWe systematically evaluated differences in chemical exposures across women of various race/ethnic groups and across age groups and time. Our findings could help inform chemical prioritization in designing epidemiological and toxicological studies. In addition, they could help guide public health interventions to reduce environmental and health disparities across populations.

Project description:ImportanceRacial/ethnic disparities in quality of care among extremely preterm infants are associated with adverse outcomes.ObjectiveTo assess whether racial/ethnic disparities in major outcomes and key care practices were changing over time among extremely preterm infants.Design, setting, and participantsThis observational cohort study used prospectively collected data from 25 US academic medical centers. Participants included 20?092 infants of 22 to 27 weeks' gestation with a birth weight of 401 to 1500 g born at centers participating in the National Institute of Child Health and Human Development Neonatal Research Network from 2002 to 2016. Of these infants, 9316 born from 2006 to 2014 were eligible for follow-up at 18 to 26 months' postmenstrual age (excluding 5871 infants born before 2006, 2594 infants born after 2014, and 2311 ineligible infants including 64 with birth weight >1000 g and 2247 infants with gestational age >26 6/7 weeks), of whom 745 (8.0%) did not have known follow-up outcomes at 18 to 26 months.Main outcomes and measuresRates of mortality, major morbidities, and care practice use over time were evaluated using models adjusted for baseline characteristics, center, and birth year. Data analyses were conducted from 2018 to 2019.ResultsIn total, 20?092 infants with a mean (SD) gestational age of 25.1 (1.5) weeks met the inclusion criteria and were available for the primary outcome: 8331 (41.5%) black infants, 3701 (18.4%) Hispanic infants, and 8060 (40.1%) white infants. Hospital mortality decreased over time in all groups. The rate of improvement in hospital mortality over time did not differ among black and Hispanic infants compared with white infants (black infants went from 35% to 24%, Hispanic infants went from 32% to 27%, and white infants went from 30% to 22%; P?=?.59 for race?×?year interaction). The rates of late-onset sepsis among black infants (went from 37% to 24%) and Hispanic infants (went from 45% to 23%) were initially higher than for white infants (went from 36% to 25%) but decreased more rapidly and converged during the most recent years (P?=?.02 for race?×?year interaction). Changes in rates of other major morbidities did not differ by race/ethnicity. Death before follow-up decreased over time (from 2006 to 2014: black infants, 14%; Hispanic infants, 39%, white infants, 15%), but moderate-severe neurodevelopmental impairment increased over time in all racial/ethnic groups (increase from 2006 to 2014: black infants, 70%; Hispanic infants, 123%; white infants, 130%). Rates of antenatal corticosteroid exposure (black infants went from 72% to 90%, Hispanic infants went from 73% to 83%, and white infants went from 86% to 90%; P?=?.01 for race?×?year interaction) and of cesarean delivery (black infants went from 45% to 59%, Hispanic infants went from 49% to 59%, and white infants went from 62% to 63%; P?=?.03 for race?×?year interaction) were initially lower among black and Hispanic infants compared with white infants, but these differences decreased over time.Conclusions and relevanceAmong extremely preterm infants, improvements in adjusted rates of mortality and most major morbidities did not differ by race/ethnicity, but rates of neurodevelopmental impairment increased in all groups. There were narrowing racial/ethnic disparities in important care practices, including the use of antenatal corticosteroids and cesarean delivery.

Dataset Information

A Comprehensive Assessment of the Racial and Ethnic Disparities in the Incidence of Gastric Cancer in the United States, 1992-2014.

Purpose

Materials and methods

Results

Conclusion

Publications

A Comprehensive Assessment of the Racial and Ethnic Disparities in the Incidence of Gastric Cancer in the United States, 1992-2014.

Similar Datasets

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