Optimal hyperglycemia thresholds in patients undergoing chemotherapy: a cross sectional study of oncologists' practices.

PURPOSE: Neither the United States nor the European oncology guidelines include details for appropriate management of hyperglycemia in cancer patients. The aim was to identify fasting and random blood glucose thresholds, and hemoglobin A1c (HbA1c) targets used by oncologists in clinical practice when managing hyperglycemia in patients with cancer undergoing chemotherapy. METHODS: This national, cross sectional study utilized a questionnaire to collect oncologists' perceptions about optimal blood glucose thresholds and HbA1c targets in patients with cancer undergoing chemotherapy. Descriptive statistics were calculated to summarize glucose thresholds, HbA1c targets, and sample characteristics. Responses to an open-ended question about oncologists' approach to hyperglycemia management were analyzed via thematic analysis using an inductive approach. RESULTS: Respondents (n = 229) were on average 52.1 years of age, 67.7% men, and 91.3% White. For patients without diabetes but experiencing hyperglycemia, oncologists targeted lower and upper fasting blood glucose levels between 75-121 mg/dL and 105-135 mg/dL, respectively. For patients with diabetes, the targets for lower and upper fasting blood glucose levels ranged between 100-130 mg/dL and 128-150 mg/dL, respectively. Fasting blood glucose (95.6%) and HbA1c (78.6%) were the most commonly used clinical indicators to consider chemotherapy dose reduction, delay, or discontinuation due to hyperglycemia in patients receiving chemotherapy with curative intent. Among those receiving palliative intent chemotherapy, the preferred clinical parameters were random blood glucose (90.0%), patient-reported blood glucose readings (70.7%), continuous glucose monitoring readings (65.1%), and patient-reported symptoms of hyperglycemia (65.1%). Three main themes emerged about oncologists' approach to hyperglycemia management: 1) identification of high-risk patients; 2) need for early identification, screening, and diagnosis of hyperglycemia; and 3) multiple hyperglycemia management strategies. CONCLUSION: Oncologists reported a wide variation of target blood glucose ranges considered appropriate in patients undergoing chemotherapy. Lack of clear guidance for hyperglycemia management during chemotherapy in the United States may be contributing to a lack of consistency in clinical practice.

Oncologists' responsibility, comfort, and knowledge managing hyperglycemia in patients with cancer undergoing chemotherapy: a cross sectional study.

PURPOSE: To assess oncologists' responsibility, comfort, and knowledge managing hyperglycemia in patients undergoing chemotherapy. METHODS: In this cross-sectional study, a questionnaire collected oncologists' perceptions about professionals responsible for managing hyperglycemia during chemotherapy; comfort (score range 12-120); and knowledge (score range 0-16). Descriptive statistics were calculated including Student t-tests and one-way ANOVA for mean score differences. Multivariable linear regression identified predictors of comfort and knowledge scores. RESULTS: Respondents (N = 229) were 67.7% men, 91.3% White and mean age 52.1 years. Oncologists perceived endocrinologists/diabetologists and primary care physicians as those responsible for managing hyperglycemia during chemotherapy, and most frequently referred to these clinicians. Reasons for referral included lack of time to manage hyperglycemia (62.4%), belief that patients would benefit from referral to an alternative provider clinician (54.1%), and not perceiving hyperglycemia management in their scope of practice (52.4%). The top-3 barriers to patient referral were long wait times for primary care (69.9%) and endocrinology (68.1%) visits, and patient's provider outside of the oncologist's institution (52.8%). The top-3 barriers to treating hyperglycemia were lack of knowledge about when to start insulin, how to adjust insulin, and what insulin type works best. Women (ß = 1.67, 95% CI: 0.16, 3.18) and oncologists in suburban areas (ß = 6.98, 95% CI: 2.53, 11.44) had higher comfort scores than their respective counterparts; oncologists working in practices with > 10 oncologists had lower comfort scores (ß = -2.75, 95% CI: -4.96, -0.53) than those in practices with ≤ 10. No significant predictors were identified for knowledge. CONCLUSION: Oncologists expected endocrinology or primary care clinicians to manage hyperglycemia during chemotherapy, but long wait times were among the top barriers cited when referring patients. New models that provide prompt and coordinated care are needed.

Mask Adherence and the Relationship Between Masking and Weather-Related Metrics.

Little is known about adherence to COVID-19 masking mandates on college campuses or the relationship between weather-related variables and masking. This study aimed to (1) observe students' adherence to on-campus mask mandates and (2) estimate the effect of weather on mask-wearing. Temple University partnered in the Centers for Disease Control and Prevention's observational Mask Adherence Surveillance at Colleges and Universities Project. February-April 2021, weekly observations were completed at 12 on-campus locations to capture whether individuals wore masks, wore them correctly, and the type of mask worn. Fashion and university masks also were recorded. Weekly average temperature, humidity, and precipitation were calculated. Descriptive statistics were calculated for masking adherence overall, over time, and by location. Statistical significance was assessed between correct mask use and mask type and the linear relationships between weekly weather metrics and mask use. Overall, 3508 individuals were observed with 89.6% wearing masks. Of those, 89.4% correctly wore masks. Cloth (58.7%) and surgical masks (35.3%) were most commonly observed and 21.3% wore fashion masks. N95/KN95 masks were correctly worn in 98.3% of observations and surgical and cloth masks were correctly worn ~ 90% of the time. Weekly adherence varied over time and by campus location. Significant inverse linear relationships existed between weekly temperature (r = - 0.72; p < 0.05) and humidity (r = - 0.63; p ≤ 0.05) and masking. Mask adherence and correct use was high. Temperature and humidity inversely affected adherence. Adherence varied by on-campus location, which suggests the locations (e.g., academic buildings, recreational center) and possibly the characteristics of individuals who frequent certain areas impacted adherence.

Assessing the current and desired levels of training and applied experiences in chronic disease prevention of students during medical school.

INTRODUCTION: Chronic diseases account for approximately 70% of deaths in the U.S. annually. Though physicians are uniquely positioned to provide behavior change counseling for chronic disease prevention, they often lack the necessary training and self-efficacy. This study examined medical student interest in receiving chronic disease prevention training as a formal part of their education as part of an effort to enhance their ability to provide guidance to patients in the future. METHODS: A 23-question, online survey was sent to all undergraduate medical students enrolled in a large medical education program. The survey assessed medical student interest in receiving training related to chronic disease prevention. Survey topics included student awareness of primary prevention programs, perceived importance of receiving training and applied experience in chronic disease prevention, and preferences for how and when to receive this training. RESULTS: Of 793 eligible medical students, 432 completed the survey (54.5%). Overall, 92.4% of students reported receiving formal training in physical activity, public health, nutrition, obesity, smoking cessation, and chronic diseases was of "very high" or "high" importance. Despite this level of importance, students most frequently reported receiving no or 1-5 h of formal training in a number of topics, including physical activity (35.4% and 47.0%, respectively) and nutrition (16.9% and 56.3%, respectively). The level of importance given to public health training was significantly greater across degree type (p = 0.0001) and future specialty (p = 0.03) for MD/MPH students and those interested in primary care, respectively. CONCLUSIONS: While medical students perceive chronic disease prevention as an important topic, most reported receiving little to no formal training. To address the growing prevalence of chronic disease across our society, programs schools should place greater emphasis on integrating training in physical activity, nutrition, and obesity-related content into the medical education curriculum.

A latent class analysis of cognitive decline in US adults, BRFSS 2015-2020.

BACKGROUND: Cognitive decline can be an early indicator for dementia. Using quantitative methods and national representative survey data, we can monitor the potential burden of disease at the population-level. METHODS: BRFSS is an annual, nationally representative questionnaire in the United States. The optional cognitive decline module is a six-item self-reported scale pertaining to challenges in daily life due to memory loss and growing confusion over the past twelve months. Respondents are 45+, pooled from 2015-2020. Latent class analysis was used to determine unobserved subgroups of subjective cognitive decline (SCD) based on item response patterns. Multinomial logistic regression predicted latent class membership from socio-demographic covariates. RESULTS: A total of 54,771 reported experiencing SCD. The optimal number of latent classes was three, labeled as Mild, Moderate, and Severe SCD. Thirty-five percent of the sample belonged to the Severe group. Members of this subgroup were significantly less likely to be older (65+ vs. 45-54 OR = 0.29, 95% CI: 0.23-0.35) and more likely to be non-Hispanic Black (OR = 1.80, 95% CI: 1.53-2.11), have not graduated high school (OR = 1.60, 95% CI: 1.34-1.91), or earned <$15K a year (OR = 3.03, 95% CI: 2.43-3.77). CONCLUSIONS: This study determined three latent subgroups indicating severity of SCD and identified socio-demographic predictors. Using a single categorical indicator of SCD severity instead of six separate items improves the versatility of population-level surveillance.

Over-the-counter medication use in residents of senior living communities: A survey study.

BACKGROUND: Self-medication with over-the-counter (OTC) products is common among older adults. Although OTC self-medication is a convenient way to manage some health issues, older persons may be at higher risk of experiencing medication-related problems. This study examines the prevalence, practices, and preferences associated with OTC medication use in older adult residents of senior living communities. OBJECTIVES: The study aimed to examine the characteristics of OTC medication users and to quantify the prevalence, attitudes, perceptions, preferences, and practices regarding OTC medication use and decision-making in 2 senior living communities in central Virginia. METHODS: The study used survey methodology. A 51-item semistructured questionnaire was designed by the research team of geriatrics specialists, and mixed-methods and evaluation researchers. The questionnaire was administered in-person to participants (N = 88). Descriptive analyses were conducted using SAS 9.4. Characteristics of those using OTC medications as directed by a health professional were compared with those of whom were self-medicating with OTC medications. RESULTS: Most of the sample were women (55%), black (61%) and had less than or equal to a high school education (55%). Analgesics were the most (76%) prevalent OTC therapeutic category used, and aspirin was the most (65%) prevalent OTC medication. A greater (82%) proportion of respondents reported self-recommended OTC medication use (self-medication with OTC medications) rather than physician recommended use (18%). A high (41%) prevalence of inappropriate use of OTC medications was observed in this sample of older adults. Most (80%) considered OTC medications safe and effective. The pharmacy was the most (93%) commonly reported purchase location to buy an OTC medication. Physicians were the most (90%) commonly reported information source for OTC medications. CONCLUSION: Considering the high percentage of self-reported self-medication, inappropriate use, and experiences of adverse effects, steps should be taken to develop consumer education and relationships with pharmacists to encourage the responsible use of OTC medications in this population.

Effects of an entertaining, culturally targeted narrative and an appealing expert interview on the colorectal screening intentions of African American women.

Universal screening for colorectal cancer (CRC) is recommended for individuals 50-75 years of age, but screening uptake is suboptimal and African Americans have suffered persistent racial disparities in CRC incidence and deaths. We compared a culturally tailored fictional narrative and an engaging expert interview on the ability to increase intentions to be screened for CRC among African American women. In a post-only experiment, women (N = 442) in face-to-face listening groups in African American churches heard audio recordings of either a narrative or an expert interview. Questionnaires were completed immediately afterward and 30 days later. Women who heard narratives reported stronger intentions to be screened with a home stool blood test than women who heard the interview; the effect lasted at least 30 days. Culturally tailored, fictional narratives appear to be an effective persuasive strategy for reducing racial disparities in CRC outcomes.

Harnessing Information Technology to Inform Patients Facing Routine Decisions: Cancer Screening as a Test Case.

PURPOSE: Technology could transform routine decision making by anticipating patients' information needs, assessing where patients are with decisions and preferences, personalizing educational experiences, facilitating patient-clinician information exchange, and supporting follow-up. This study evaluated whether patients and clinicians will use such a decision module and its impact on care, using 3 cancer screening decisions as test cases. METHODS: Twelve practices with 55,453 patients using a patient portal participated in this prospective observational cohort study. Participation was open to patients who might face a cancer screening decision: women aged 40 to 49 who had not had a mammogram in 2 years, men aged 55 to 69 who had not had a prostate-specific antigen test in 2 years, and adults aged 50 to 74 overdue for colorectal cancer screening. Data sources included module responses, electronic health record data, and a postencounter survey. RESULTS: In 1 year, one-fifth of the portal users (11,458 patients) faced a potential cancer screening decision. Among these patients, 20.6% started and 7.9% completed the decision module. Fully 47.2% of module completers shared responses with their clinician. After their next office visit, 57.8% of those surveyed thought their clinician had seen their responses, and many reported the module made their appointment more productive (40.7%), helped engage them in the decision (47.7%), broadened their knowledge (48.1%), and improved communication (37.5%). CONCLUSIONS: Many patients face decisions that can be anticipated and proactively facilitated through technology. Although use of technology has the potential to make visits more efficient and effective, cultural, workflow, and technical changes are needed before it could be widely disseminated.

Association between high school students' cigarette smoking, asthma and related beliefs: a population-based study.

BACKGROUND: Smoking has a detrimental effect on the symptoms and severity of asthma, a common chronic disease among adolescents. The purpose of this study was to examine the association between asthma and smoking among high school students and assess provider-patient communication with asthmatic adolescents regarding smoking and adolescents' beliefs about the harms of smoking. METHODS: In fall 2014, data from high school students, ages 14-18 years, completing the 2009-2010 Virginia Youth Tobacco Survey (N = 1796) were used in descriptive analyses and multivariable logistic regression models adjusting for model-specific confounders as appropriate. RESULTS: Overall, an estimated 19 % of high school students in Virginia smoked and 16 % had asthma. Odds of smoking did not differ by asthma status; however, asthmatics had 1.5 times higher odds of being asked if they smoke (95 % CI 1.06-2.13) and being advised not to smoke by a health professional (95 % CI 1.10-2.14) compared to non-asthmatics. Asthmatics who believed second-hand smoke or smoking 1-5 cigarettes/day was not harmful had respectively 4.2 and 2.8 times higher odds of smoking than those who thought each was harmful. Further, asthmatics who thought smoking 1-2 years is safe had 3.4 times higher odds of smoking than those who did not (95 % CI 1.57-10.1). CONCLUSIONS: While asthmatic adolescents are just as likely to smoke as non-asthmatics, less healthy beliefs about the risks of smoking increase the odds of smoking among asthmatics. Thus, targeted asthma-specific smoking prevention and education to change attitudes and beliefs could be an effective tool for adolescents.

Survivorship care plans and time since diagnosis: factors that contribute to who breast cancer survivors see for the majority of their care.

PURPOSE: The study purpose is to describe who breast cancer survivors see for their care by years since diagnosis and determine the association between time since diagnosis and the type of clinician providing the majority of care, taking into account receipt of follow-up care instructions. METHODS: The 2010 Behavioral Risk Factor Surveillance System was used to identify a sample (N = 1024) of women with a self-reported history of breast cancer. Descriptive characteristics were calculated and stratified by years since diagnosis. Multivariate logistic regression adjusting for age, income, and receiving follow-up care instructions was performed to evaluate the association between years since diagnosis and clinician providing the majority of care. RESULTS: The type of clinician reported most frequently was a primary care provider. Women 0-1 year since diagnosis had the highest proportion reporting a cancer-related clinician for their care. After adjustment, women 0-1, 2-3, and 4-5 years since diagnosis were respectively 2.1, 2.6, and 1.7 times more likely to have a cancer-related clinician providing the majority of care compared to women 6+ years since diagnosis (respective 95 % confidence intervals (CIs) 1.0-4.3; 1.4-4.6; 0.9-3.1). CONCLUSIONS: Breast cancer survivors receive the majority of their care from primary care providers, and years since diagnosis has a significant impact on who survivors see for their care. Breast cancer survivors have nationally recommended follow-up guidelines; however, the type of clinician that should provide care is not specified. Information regarding who provides the majority of care can be used for future planning and policy development.

The Effects of Age and Height on Gait Smoothness in Adolescent Athletes.

(1) Background: Despite evidence of increased rates of sports injury during the years surrounding peak growth in adolescents, little is known regarding the relationship between adolescent growth and gait stability. The aim of this study was to gain a better understanding of how chronological age and height relate to gait stability in both male and female adolescents. (2) Methods: Participants (N = 67; females: n = 34, ages 8.7-15.9 years; males: n = 33, ages 10.0-16.7 years) completed two trials of treadmill walking at varying speeds: the preferred walking speed and 30% above and below. Trials were separated by a bout of fatiguing exercises. HarmonicRatios of the trunk, calculated from acceleration signals taken during walking, were used to quantify gait stability. Data were separated by sex and relationships between height and chronological age, and HarmonicRatios were assessed using multiple linear regression. (3) Results: Females' HarmonicRatios improved with chronological age both before and after fatigue. Males' HarmonicRatios increased with chronological age before fatigue; however, this effect was eliminated post-fatigue. Females' height was negatively associated with HarmonicRatios post-fatigue. Males' height was positively associated with HarmonicRatios pre-fatigue. (4) Conclusions: The study findings suggest sex differences in the effects of fatigue on gait stability during adolescence. In both sexes, HarmonicRatios increased with chronological age. These improvements were eliminated for males and altered for females with fatigue. The results of this study indicate the need for the reevaluation of sports progression based on chronological age in adolescents.

Knowledge, attitudes, and behaviors with mask use and vaccines for COVID-19 prevention at 13 colleges and universities, April 2021.

Objectives: To understand college and university student knowledge, attitudes, and behaviors (KAB) regarding COVID-19 prevention strategies. Methods: Thirteen colleges and universities volunteered to conduct an anonymous electronic survey in April 2021 to assess students' KAB about mask use and vaccination to prevent COVID-19. Results: Three-quarters of students indicated they "Always" wore a mask correctly when in public indoor places. Of those not yet vaccinated, 55% expressed concern about unknown side effects. Over half of students were unsure or believe they do not need to continue wearing masks after vaccination and older students more likely to be vaccinated. There was a significant inverse correlation between intention of getting vaccinated and intention to attend a large indoor party without a mask. Conclusions: Colleges and universities are important to community efforts to slow the COVID-19 pandemic. The KAB findings can inform approaches to increase overall mask use and vaccination uptake among young students.

Fruit and vegetable intake among rural youth following a school-based randomized controlled trial.

OBJECTIVE: We implemented a theory-based randomized controlled trial (Living Free of Tobacco, Plus (LIFT+) in ten rural middle schools and assessed impact on tobacco use and fruit/vegetable (F/V) intake in 2008-2010. Data on F/V intake at baseline, immediate post intervention, and 1-year follow-up are presented. METHODS: Schools were randomized to intervention or control groups. Goal setting, peer leaders, and class workshops with parent involvement, were intervention features; community partners were supportive. Seventh graders filled out surveys on health behaviors, psycho-social variables, and demographic characteristics. Adjusted models comparing intervention and control conditions were analyzed. RESULTS: Sample (n=1119) was 48.5% female, 50% White, with a mean age of 12.7 years. Mean F/V servings were significantly higher in intervention schools at immediate post (3.19 servings) and at 1-year (3.02 servings) compared to controls (2.90, 2.69 respectively). Knowledge of 5-a-day recommendation was significantly higher in intervention schools at immediate post test (75.0%) versus controls (53.8%) but not at 1-year follow-up. CONCLUSIONS: Intervention schools reported significantly higher mean F/V servings at post intervention and 1-year, and for knowledge of F/V recommendations at immediate post compared to controls. Higher levels of parent and community involvement may further increase F/V intake in future interventions. ClinicalTrials.gov Identifier: NCT01412697.

Association between relationship characteristics, sexual health attitudes, and dual contraceptive use among young adult college students aged 18-24.

Objective Determine the relationship characteristics, sexual health attitudes, and demographic factors associated with dual contraceptive use among college students. Participants: September-October 2018 via campus email, we recruited College of Public Health students attending a large, urban, public university (N = 424). Methods: Respondents completed a cross-sectional, Web-based sexual health questionnaire. Descriptive statistics were calculated. Multiple logistic regression models were run to determine the association between relationship characteristics, pregnancy and condom attitudes, demographics, and dual use the last time having sex. Results: In independent models, one-unit increase in trust (aOR = 0.982; 95% CI: 0.966-0.998) and commitment score (aOR = 0.987, 95% CI: 0.976-0.999) was inversely associated with dual use while sex with a casual date/acquaintance (aOR = 3.149; 95% CI: 1.550-6.397) was positively associated. In a fully adjusted model for all correlates, only trust score was significant (aOR = 0.982; 95% CI: 0.966, 0.998). Conclusions: Emotion-based constructs may be more influential on dual use behaviors than discrete relationship factors.

Colorectal Cancer Screening Prevalence and Adherence for the Cancer Prevention Project of Philadelphia (CAP3) Participants Who Self-Identify as Black.

INTRODUCTION: Colorectal cancer is the third leading cause of cancer-related deaths among Black men and women. While colorectal cancer screening (CRCS) reduces mortality, research assessing within race CRCS differences is lacking. This study assessed CRCS prevalence and adherence to national screening recommendations and the association of region of birth with CRCS adherence, within a diverse Black population. METHODS: Data from age-eligible adults, 50-75 years, (N = 357) participating in an ongoing, cross-sectional study, was used to measure CRCS prevalence and adherence and region of birth (e.g., Caribbean-, African-, US-born). Prevalence and adherence were based on contemporaneous US Preventive Services Task Force guidelines. Descriptive statistics were calculated and adjusted prevalence and adherence proportions were calculated by region of birth. Adjusted logistic regression models were performed to assess the association between region of birth and overall CRCS and modality-specific adherence. RESULTS: Respondents were 69.5% female, 43.3% married/living with partner, and 38.4% had <$25,000 annual income. Overall, 78.2% reported past CRCS; however, stool test had the lowest prevalence overall (34.6%). Caribbean (95.0%) and African immigrants (90.2%) had higher prevalence of overall CRCS compared to US-born Blacks (59.2%) (p-value <0.001). African immigrants were five times more likely to be adherent to overall CRCS compared to US-born Blacks (OR = 5.25, 95% CI 1.34-20.6). Immigrants had higher odds of being adherent to colonoscopy (Caribbean OR = 6.84, 95% CI 1.49-31.5; African OR = 7.14, 95% CI 1.27-40.3) compared to US-born Blacks. CONCLUSIONS: While Caribbean and African immigrants have higher prevalence and adherence of CRCS when compared US-born Blacks, CRCS is still sub-optimal in the Black population. Efforts to increase CRCS, specifically stool testing, within the Black population are warranted, with targeted interventions geared towards US-born Blacks.

Avertable deaths associated with household income in Virginia.

OBJECTIVES: We estimated how many deaths would be averted if the entire population of Virginia experienced the mortality rates of the 5 most affluent counties or cities. METHODS: Using census data and vital statistics for the years 1990 through 2006, we applied the mortality rates of the 5 counties/cities with the highest median household income to the populations of all counties and cities in the state. RESULTS: If the mortality rates of the reference population had applied to the entire state, 24.3% of deaths in Virginia from 1990 through 2006 (range = 21.8%-28.1%) would not have occurred. An annual mean of 12 954 deaths would have been averted (range = 10 548-14 569), totaling 220 211 deaths from 1990 through 2006. In some of the most disadvantaged areas of the state, nearly half of deaths would have been averted. CONCLUSIONS: Favorable conditions that exist in areas with high household incomes exert a major influence on mortality rates. The corollary-that health suffers when society is exposed to economic stresses-is especially timely amid the current recession. Further research must clarify the extent to which individual-level factors (e.g., earnings, education, race, health insurance) and community characteristics can improve health outcomes.

The role of labor organizations in tobacco control: what do unionized workers think?

PURPOSE: Examine unionized workers' knowledge and attitudes about workplace tobacco use, their exposure to secondhand smoke, and the role of labor unions in addressing smoking and cessation coverage policies. DESIGN: Random-digit dial telephone survey. SUBJECTS: Unionized workers in Minnesota (N = 508). MEASURES: Knowledge and attitudes about workplace tobacco use and tobacco control policy making. ANALYSIS: Multiple logistic regression. RESULTS: The majority of respondents viewed secondhand smoke exposure as an important workplace health and safety issue, a health risk to nonsmokers, and a driver of increased health care costs, but smokers were less likely than nonsmokers to agree. Only 7% of respondents supported their unions taking the lead in tobacco control policy making. A large majority of those surveyed rated smoking cessation programs as an important benefit for which their labor unions could bargain; however, smokers and those whose workplaces allowed smoking were less likely than their counterparts to agree. CONCLUSIONS: Most unionized workers were aware of the health effects of exposure to secondhand smoke and supported union bargaining for restrictions on workplace smoking and cessation programs, although few workers supported their unions taking the lead in initiating worksite smoking policies. Results suggest that campaigns to promote smoke-free worksites should be tailored to unionized workers, and further collaborations with labor unions to promote policy change are needed.

Bayesian deprivation index models for explaining variation in elevated blood lead levels among children in Maryland.

Lead exposure adversely affects children's health. Exposure in the United States is highest among socioeconomically disadvantaged individuals who disproportionately live in substandard housing. We used Bayesian binomial regression models to estimate a neighborhood deprivation index and its association with elevated blood lead level (EBLL) risk using blood lead level testing data in Maryland census tracts. Our results show the probability of EBLL was spatially structured with high values in Baltimore city and low values in the District of Columbia suburbs and Baltimore suburbs. The association between the neighborhood deprivation index and EBLL risk was statistically significant after accounting for spatial dependence in probability of EBLL. The percent of houses built before 1940, African Americans, and renter occupied housing were the most important variables in the index. Bayesian models provide a flexible one-step approach to modeling risk associated with neighborhood deprivation while accounting for spatially structured and unstructured heterogeneity in risk.

Explaining variation in elevated blood lead levels among children in Minnesota using neighborhood socioeconomic variables.

BACKGROUND: Childhood lead exposure is linked to numerous adverse health effects and exposure in the United States is highest among people living in substandard housing, which is disproportionately inhabited by socioeconomically disadvantaged individuals. In this paper, we compared the Vox lead exposure risk score and concentrated disadvantage based on principal component analysis (PCA) to weighted quantile sum (WQS) regression to determine which method was best able to explain variation in elevated blood lead levels (EBLLs). METHODS: We constructed indices for census tracts in Minnesota and used them in Poisson regression models to identify the best socioeconomic measure for explaining EBLL risk. RESULTS: All indices had a significant association with EBLL in separate models. The WQS index had the best goodness-of-fit, followed next by the Vox index, and then the concentrated disadvantage index. Among the most important variables in the WQS index were percent of houses built before 1940, percent renter occupied housing, percent unemployed, and percent African American population. CONCLUSIONS: The WQS approach was best able to explain variation in EBLL risk and identify census tracts where targeted interventions should be focused to reduce lead exposure.