Geographic and temporal trends in pediatric and young adult brain tumors in Kentucky, 1995-2019

INTRODUCTION

Pediatric and young adult brain tumors (PYBT) account for a large share of cancer-related morbidity and mortality among children in the United States, but their etiology is not well understood. Previous research suggests the Appalachian region of Kentucky has high rates of PYBT. This study explored PYBT incidence over 25 years in Kentucky to identify geographic and temporal trends and generate hypotheses for future research.

METHODS

The Kentucky Cancer Registry contributed data on all PYBT diagnosed among those aged 0-29 during years 1995-2019. Age- and sex-adjusted spatio-temporal scan statistics-one for each type of PYBT, and one for all types-comprised the primary analysis. These results were mapped along with environmental and occupational data.

RESULTS

Findings indicated that north-central Kentucky and the Appalachian region experienced higher rates of some PYBT. High rates of astrocytomas were clustered in a north-south strip of central Kentucky toward the end of the study period, while high rates of other specified types of intracranial and intraspinal neoplasms were significantly clustered in eastern Kentucky. The area where these clusters overlapped, in north-central Kentucky, had significantly higher rates of PYBT generally.

DISCUSSION

This study demonstrates north-central Kentucky and the Appalachian region experienced higher PYBT risk than the rest of the state. These regions are home to some of Kentucky's signature industries, which should be examined in further research. Future population-based and individual-level studies of genetic factors are needed to explore how the occupations of parents, as well as prenatal and childhood exposures to pesticides and air pollutants, impact PYBT incidence.

Global survival trends for brain tumors, by histology: analysis of individual records for 556,237 adults diagnosed in 59 countries during 2000-2014 (CONCORD-3)

BACKGROUND

Survival is a key metric of the effectiveness of a health system in managing cancer. We set out to provide a comprehensive examination of worldwide variation and trends in survival from brain tumors in adults, by histology.

METHODS

We analyzed individual data for adults (15-99 years) diagnosed with a brain tumor (ICD-O-3 topography code C71) during 2000-2014, regardless of tumor behavior. Data underwent a 3-phase quality control as part of CONCORD-3. We estimated net survival for 11 histology groups, using the unbiased nonparametric Pohar Perme estimator.

RESULTS

The study included 556,237 adults. In 2010-2014, the global range in age-standardized 5-year net survival for the most common sub-types was broad: in the range 20%-38% for diffuse and anaplastic astrocytoma, from 4% to 17% for glioblastoma, and between 32% and 69% for oligodendroglioma. For patients with glioblastoma, the largest gains in survival occurred between 2000-2004 and 2005-2009. These improvements were more noticeable among adults diagnosed aged 40-70 years than among younger adults.

CONCLUSIONS

To the best of our knowledge, this study provides the largest account to date of global trends in population-based survival for brain tumors by histology in adults. We have highlighted remarkable gains in 5-year survival from glioblastoma since 2005, providing large-scale empirical evidence on the uptake of chemoradiation at population level. Worldwide, survival improvements have been extensive, but some countries still lag behind. Our findings may help clinicians involved in national and international tumor pathway boards to promote initiatives aimed at more extensive implementation of clinical guidelines.

Improving substance abuse treatment for indigent clients in Detroit

It has been clearly established that substance abuse treatment works (De Leon 1988). Thus, activities which increase the proportion of indigent clients in Detroit who actually get into treatment and activities which help indigent clients stay in treatment are likely to significantly improve treatment outcomes. The Target Cities projects in general and the Detroit Target Cities project in particular represent some of the few efforts currently underway to determine intervention activities which significantly improve treatment outcomes for indigent substance abusing clients. Subsequent evaluation has shown that the proportion of clients referred by the CDRS who were actually admitted into a treatment program increased significantly after full implementation of the Detroit Target Cities screening and pretreatment case management activities. Furthermore, the average time between referral by the CDRS and admission into a treatment program decreased significantly (Tucker 1997). Evaluation of the Detroit Target Cities jail-based substance abuse treatment program also showed a significant increase in the proportion of clients who remained drug free after full implementation of the program (Tucker 1998).

The effectiveness of a tobacco prevention program with adolescents living in a tobacco-producing region

OBJECTIVES

This study investigated the efficacy of a social-influences tobacco prevention program conducted with adolescents living in a high tobacco production area.

METHODS

Students in 10 experimental schools completed the tobacco prevention program and a booster intervention. Control students received health education as usual.

RESULTS

After 2 years of treatment, smoking rates in the treatment group (vs the control group) were lower for 30-day, 7-day, and 24-hour smoking. The intervention had more of an impact on those who were involved in raising tobacco than it did on those not involved in raising tobacco.

CONCLUSIONS

Although modest, effects were achieved with minimal intervention time in a high-risk group, indicating that social-influences prevention programs may be effective in such groups.

What providers should know about community cancer control

PURPOSE

The authors describe a framework for developing an effective, community-focused cancer control program.

OVERVIEW

Progress in the application of cancer control interventions has proven to be quite variable across different populations and communities. The Kentucky Cancer Program, developed under joint sponsorship of cancer centers at two state universities, has been using a model that appears to provide a high degree of sensitivity to community-specific problems and solutions. The Kentucky four-step model includes 1) using data from a population-based cancer registry and other sources to identify problems; 2) ensuring community involvement with providers in selecting the target population and developing the intervention strategy; 3) implementing the intervention plan; and 4) using cancer registry and other data to evaluate the impact of this intervention.

CLINICAL IMPLICATIONS

This framework may be useful to providers as they try to balance the goals of their clinical practice and the goals of community cancer control. Developing an effective, community-focused cancer control program requires that providers gain a solid knowledge about their community. The depth and richness of that knowledge base is enhanced by the active participation of community members as they collaborate with the providers on planning and implementing cancer control activities.

Relationship of personal tobacco-raising, parental smoking, and other factors to tobacco use among adolescents living in a tobacco-producing region

This study examined factors related to tobacco use among youth from tobacco-raising (TRH) and nonraising households (NRH). The subjects were 3,851 seventh-grade students from 19 middle schools located in a tobacco-raising region. Valid self-reports of tobacco use were encouraged by the use of a test for carbon monoxide in expired air. Cigarette use was higher when (a) at least one parent smoked, and/or (b) the student personally raised tobacco. A boy who personally raised tobacco and had at least one parent who smoked was 10.2 times more likely to have smoked in the last 7 days than a boy from a nonraising household in which neither parent smoked. For girls, the odds ratio was 5.6:1. Tobacco use among students in this high-risk group was higher than rates reported in national or regional studies. Other results were: (1) use began very early--16% of the students had tried cigarettes and 13% of the boys had tried smokeless tobacco (SLT) in Grade 3 or earlier; and (2) users reported more lenient rules at home regarding tobacco use than did nonusers. Years from now, these high-risk students are likely to be major contributors to increased morbidity and mortality due to tobacco use. Implications for tobacco prevention in tobacco-raising areas are discussed.

The costs of cancer care in the United States: implications for action

The total annual cost of cancer care in the United States (including direct and indirect costs) has been estimated at more than $96 billion. Although third-party payers have led the effort to reduce these costs, such high expenditures must concern society as a whole, since money spent on cancer care, whether through insurance premiums, taxes to support Medicare, or payouts from family savings, could be used for other purposes. In the future, attention may be shifted to more cost-effective strategies, including greater prevention efforts and development of better diagnostic tools to permit early detection. Improved diagnosis, however, presents an anomaly in that with earlier detection, survival is greater but the overall direct treatment costs are higher. This is why when making decisions about allocation of medical resources, the indirect costs of morbidity and mortality (which are reduced with early diagnosis) must be considered as well as the direct cost.

The 1990/91 Kentucky hospital smoking policy survey: a follow-up

We surveyed all Kentucky hospitals regarding smoking policies iin 1989, 1990, and 1991. There were statistically significant increases in the numbers of hospitals which developed smoking policies and became smoke free between 1990 and 1991. The sale of tobacco in hospitals declined significantly between 1989 and 1991, as did the number of institutions providing smoking areas within the hospital. Survey respondents indicated that the JCAHO mandate prompted changes in smoking policies. Kentucky hospitals are leading the way in developing smoke-free environments, but externally imposed regulations have played a major role in promoting this progress.

Incidence of dysplasia and carcinoma of the uterine cervix in an Appalachian population

BACKGROUND

Cervical cancer mortality rates in the Appalachian population of southeastern Kentucky have been shown to be unusually high. To better understand the high cervical cancer death rate in this area, we developed a population-based cervical disease registry.

PURPOSE

This study describes the incidence of cervical dysplasia, carcinoma in situ, and invasive cervical cancer in 1986 and 1987 among White women in a 36-county area of Appalachian Kentucky based on histologic diagnoses.

METHODS

We compared average annual age-adjusted incidence rates for carcinoma in situ and invasive cervical cancer in the study area with those for women in the Surveillance, Epidemiology, and End Results (SEER) Program.

RESULTS

The incidence rate of invasive cervical cancer for women in the study area (14.9 per 100,000) was nearly twice that for White women in the SEER population (7.8 per 100,000), but it was similar to that for Black women in the SEER population (15.3 per 100,000). The incidence of carcinoma in situ for women in the study population (38.2 per 100,000) was 21% higher than that for White women (31.5 per 100,000) or for Black women (31.2 per 100,000) in the SEER population. The average annual age-adjusted incidence rate for all grades of dysplasia among women in the study population was 194.6 per 100,000. No comparable population-based incidence rates for dysplasia could be identified.

CONCLUSIONS

Cervical cancer incidence rates are higher in Appalachian Kentucky than in the SEER population. Poverty appears to be a factor associated with these rates.

IMPLICATIONS

Low-density populations such as those in rural Appalachia deserve greater attention in cancer control research. The population-based cervical dysplasia rates reported here may be useful for comparisons in future investigations.

Use of snuff, chewing tobacco, and cigarettes among adolescents in a tobacco-producing area

This study describes the prevalence and patterns of smokeless tobacco and cigarette use among adolescents with a specific focus on those living in a high tobacco production area. The subjects were 582 male and 485 female students in grades 7 through 12, with 54% living in a rural (nonmetro) area and the remainder living in an urban (metro) area. Self-reports of tobacco usage were validated using biochemical tests. High smokeless tobacco usage rates were found among nonmetro males--90% had tried one or more smokeless tobacco products and 33% had used at least one of the products in the last 6 days. Students' tobacco usage increased dramatically as the degree of personal involvement in raising tobacco increased. Of senior high boys who had household involvement in tobacco, 100% had tried snuff and 42% had used it in the last 6 days; 80% had tried cigarettes and 53% had used them in the last 6 days. Some other results were: (1) use of snuff was more popular than chewing tobacco, (2) the average grade for initiation to tobacco was the fourth grade for nonmetro students and the fifth grade for metro students, and (3) a large number of male smokeless users also reported cigarette use. Students from tobacco-raising households are at high risk for tobacco use. Future research should focus on effective prevention methods for high-risk students.

Saliva cotinine and thiocyanate: chemical indicators of smokeless tobacco and cigarette use in adolescents

Recent attempts to measure smoking behavior using chemical tests may have been confounded by the use of smokeless tobacco. An objective measure of smokeless tobacco use is needed, particularly among adolescents who may not provide accurate self-reports of tobacco usage. Saliva cotinine was used to distinguish self-reported tobacco users from nonusers and a combination of saliva cotinine and thiocyanate (SCN) tests was used to distinguish smokers from smokeless tobacco users. The subjects were 471 students in grades 7 through 11 who lived in a high-tobacco production area. Approximately 89% of reported nonusers had no detectable cotinine and 99% of nonusers had levels less than 25 ng/ml. Of those who had used tobacco within the last 12 hr, 95% had detectable levels of cotinine. Samples that tested positive for cotinine were also tested for SCN. Eighty-six percent of smokers and 74% of mixed users had SCN values of greater than 1000 mumol/liter, while only 14% of smokeless users had SCN values at that level. The combination of cotinine and SCN was effective in distinguishing smokers from smokeless users but was not effective in distinguishing mixed use from the other two types of use.