Life in Data Sets: Locating and Accessing Data on the Health of Americans Across the Life Span.

CONTEXT: The US government manages a large number of data sets, including federally funded data collection activities that examine infectious and chronic conditions, as well as risk and protective factors for adverse health outcomes. Although there currently is no mature, comprehensive metadata repository of existing data sets, US federal agencies are working to develop and make metadata repositories available that will improve discoverability. However, because these repositories are not yet operating at full capacity, researchers must rely on their own knowledge of the field to identify available data sets. PROGRAM OR POLICY: We sought to identify and consolidate a practical and annotated listing of those data sets. IMPLEMENTATION AND/OR DISSEMINATION: Creative use of data resources to address novel questions is an important research skill in a wide range of fields including public health. This report identifies, promotes, and encourages the use of a range of data sources for health, behavior, economic, and policy research efforts across the life span. EVALUATION: We identified and organized 28 federal data sets by the age-group of primary focus; not all groups are mutually exclusive. These data sets collectively represent a rich source of information that can be used to conduct descriptive epidemiologic studies. DISCUSSION: The data sets identified in this article are not intended to represent an exhaustive list of all available data sets. Rather, we present an introduction/overview of the current federal data collection landscape and some of its largest and most frequently utilized data sets.

Prevalence of dementia subtypes in United States Medicare fee-for-service beneficiaries, 2011-2013.

INTRODUCTION: Rapid growth of the older adult population requires greater epidemiologic characterization of dementia. We developed national prevalence estimates of diagnosed dementia and subtypes in the highest risk United States (US) population. METHODS: We analyzed Centers for Medicare & Medicaid administrative enrollment and claims data for 100% of Medicare fee-for-service beneficiaries enrolled during 2011-2013 and age ≥68 years as of December 31, 2013 (n = 21.6 million). RESULTS: Over 3.1 million (14.4%) beneficiaries had a claim for a service and/or treatment for any dementia subtype. Dementia not otherwise specified was the most common diagnosis (present in 92.9%). The most common subtype was Alzheimer's (43.5%), followed by vascular (14.5%), Lewy body (5.4%), frontotemporal (1.0%), and alcohol induced (0.7%). The prevalence of other types of diagnosed dementia was 0.2%. DISCUSSION: This study is the first to document concurrent prevalence of primary dementia subtypes among this US population. The findings can assist in prioritizing dementia research, clinical services, and caregiving resources.

What is "community health"? Examining the meaning of an evolving field in public health.

In this commentary, we review definition frameworks for community health and examine factors having core relevance to shaping the meaning of this term and growing field. We conclude by suggesting a potential framework for conceptualizing and advancing this field of public health practice through improved understanding of the meaning, scope, and science of community health.

A novel approach to mixing qualitative and quantitative methods in HIV and STI prevention research.

Mixed-method designs are increasingly used in sexually transmitted infection (STI) and HIV prevention research. The authors designed a mixedmethod approach and applied it to estimate and evaluate a predictor of continued female condom use (6+ uses, among those who used it at least once) in a 6-month prospective cohort study. The analysis included 402 women who received an intervention promoting use of female and male condoms for STI prevention and completed monthly quantitative surveys; 33 also completed a semistructured qualitative interview. The authors identified a qualitative theme (couples' female condom enjoyment [CFCE]), applied discriminant analysis techniques to estimate CFCE for all participants, and added CFCE to a multivariable logistic regression model of continued female condom use. CFCE related to comfort, naturalness, pleasure, feeling protected, playfulness, ease of use, intimacy, and feeling in control of protection. CFCE was associated with continued female condom use (adjusted odds ratio: 2.8, 95% confidence interval: 1.4-5.6) and significantly improved model fit (p < .001). CFCE predicted continued female condom use. Mixed-method approaches for "scaling up" qualitative findings from small samples to larger numbers of participants can benefit HIV and STI prevention research.

Co-occurrence of leading lifestyle-related chronic conditions among adults in the United States, 2002-2009.

INTRODUCTION: Public health and clinical strategies for meeting the emerging challenges of multiple chronic conditions must address the high prevalence of lifestyle-related causes. Our objective was to assess prevalence and trends in the chronic conditions that are leading causes of disease and death among adults in the United States that are amenable to preventive lifestyle interventions. METHODS: We used self-reported data from 196,240 adults aged 25 years or older who participated in the National Health Interview Surveys from 2002 to 2009. We included data on cardiovascular disease (coronary heart disease, angina pectoris, heart attack, and stroke), cancer, chronic obstructive pulmonary disease (emphysema and chronic bronchitis), diabetes, and arthritis. RESULTS: In 2002, an unadjusted 63.6% of participants did not have any of the 5 chronic conditions we assessed; 23.9% had 1, 9.0% had 2, 2.9% had 3, and 0.7% had 4 or 5. By 2009, the distribution of co-occurrence of the 5 chronic conditions had shifted subtly but significantly. From 2002 to 2009, the age-adjusted percentage with 2 or more chronic conditions increased from 12.7% to 14.7% (P < .001), and the number of adults with 2 or more conditions increased from approximately 23.4 million to 30.9 million. CONCLUSION: The prevalence of having 1 or more or 2 or more of the leading lifestyle-related chronic conditions increased steadily from 2002 to 2009. If these increases continue, particularly among younger adults, managing patients with multiple chronic conditions in the aging population will continue to challenge public health and clinical practice.

Defining and measuring chronic conditions: imperatives for research, policy, program, and practice.

Current trends in US population growth, age distribution, and disease dynamics foretell rises in the prevalence of chronic diseases and other chronic conditions. These trends include the rapidly growing population of older adults, the increasing life expectancy associated with advances in public health and clinical medicine, the persistently high prevalence of some risk factors, and the emerging high prevalence of multiple chronic conditions. Although preventing and mitigating the effect of chronic conditions requires sufficient measurement capacities, such measurement has been constrained by lack of consistency in definitions and diagnostic classification schemes and by heterogeneity in data systems and methods of data collection. We outline a conceptual model for improving understanding of and standardizing approaches to defining, identifying, and using information about chronic conditions in the United States. We illustrate this model's operation by applying a standard classification scheme for chronic conditions to 5 national-level data systems. Although the literature does not support a single uniform definition for chronic disease, recurrent themes include the non-self-limited nature, the association with persistent and recurring health problems, and a duration measured in months and years, not days and weeks--Thrall. So far, many different approaches have been used to measure the prevalence and consequences of chronic diseases and health conditions in children, resulting in a wide variability of prevalence estimates that cannot be readily compared--van der Lee et al.

Complications of common gynecologic surgeries among HIV-infected women in the United States.

OBJECTIVE: To compare frequencies of complications among HIV-infected and-uninfected women undergoing common gynecological surgical procedures in inpatient settings. METHODS: We used 1994-2007 data from the Nationwide Inpatient Sample of the Healthcare Cost and Utilization Project, a nationally representative sample of inpatient hospitalizations. Our analysis included discharge records of women aged ≥15 undergoing hysterectomy, oophorectomy, salpingectomy for ectopic pregnancy, bilateral tubal sterilization, or dilation and curettage. Associations between HIV infection status and surgical complications were evaluated in multivariable logistic regression models, adjusting for key covariates. RESULTS: For each surgery, HIV infection was associated with experiencing ≥1 complication. Adjusted ORs ranged from 2.0 (95% confidence interval (CI): 1.7, 2.2) for hysterectomy with oophorectomy to 3.1 (95% CI: 2.4, 4.0) for bilateral tubal sterilization with no comorbidity present. HIV infection was positively associated with extended length of stay and infectious complications of all of the surgeries examined. For some surgeries, it was positively associated with transfusion and anemia due to acute blood loss. Among HIV-infected women, the odds of infectious and other complications did not decrease between 1994-2000 and 2001-2007. CONCLUSION: HIV infection was associated with elevated frequencies of complications of gynecologic surgeries in the US, even in the era of HAART.

Trends and factors associated with the Day 5 embryo transfer, assisted reproductive technology surveillance, USA, 2001-2009.

STUDY QUESTION: What characteristics are associated with a Day 5 embryo transfer? SUMMARY ANSWER: The use of the Day 5 embryo transfer has increased over time, with clinicians allowing women with typically 'poorer' prognostic characteristics to undergo a Day 5 embryo transfer. The mean number of embryos per Day 5 transfer decreased from 2001 to 2009, although the prevalence of the Day 5 single embryo transfer remains low and the rate of multiple births remains substantial. WHAT IS KNOWN AND WHAT THIS PAPER ADDS: Day 5 embryo transfer may reduce the rate of multiple gestation pregnancy. US trends over time in the prevalence of the Day 5 transfer, changes in characteristics of patients receiving Day 5 transfer, and number of embryos transferred are unknown. DESIGN: We used 2001-2009 US National assisted reproductive technology (ART) Surveillance System (NASS) data on 620,295 fresh IVF cycles derived from autologous oocytes with a Day 3 or 5 embryo transfer. Trends in the mean number of embryos transferred from 2001 to 2009 were assessed by the day of transfer. For 349,947 cycles from clinics performing both Days 3 and 5 embryo transfers, multivariable logistic regression was used to determine the characteristics associated with the Day 5 embryo transfer. We also compared the characteristics of the Day 5 embryo cycles in 2001 and 2009. MAIN RESULTS AND THE ROLE OF CHANCE: Overall, the proportion of ART cycles using the Day 5 embryo transfer increased from 12% in 2001 to 36% in 2009 (P<0.0001), while the mean number of embryos transferred decreased from 2.4 to 2.1 (P<0.0001). Among Day 5 transfers, the rate of the single embryo transfer tripled from 4.5% in 2001 to 14.8% in 2009 (P<0.0001); and the rate of multiple births decreased from 44.8 to 41.1% (P<0.0001). In cycles initiated after 2001, maternal age<35 years, no prior ART cycles, ≥1 prior pregnancies, baseline follicle stimulating hormone<10 international units and ≥10 oocytes retrieved were associated with the Day 5 embryo transfer. Compared with 2001, in 2009, a broader range of candidates received the Day 5 transfer. BIAS Women undergoing multiple ART cycles over time are not linked. CONFOUNDING FACTORS AND OTHER REASONS FOR CAUTION: We ran multivariable logistic regression to lessen the effects of the confounding factors. Cycle cancelation rates by the day of embryo transfer are unknown. GENERALIZABILITY TO OTHER POPULATIONS: Generalizable to ART clinics included in NASS. STUDY FUNDING/COMPETING INTERESTS: This study was funded by the Centres for Disease Control. The authors have no competing interests to declare.

Integrating the life course perspective into a local maternal and child health program.

For many decades, early access to prenatal care has been considered the gold standard for improving birth outcomes. In Contra Costa County, a diverse urban and suburban county of over one million people in the San Francisco Bay Area, the Family Maternal and Child Health Programs of Contra Costa Health Services (CCHS) have seen high rates of early entry into prenatal care since 2000. Yet despite our best efforts to increase access to quality prenatal care, our rates of low birth weight and infant mortality, especially among African Americans, continue to be high. When we were introduced to the Life Course Perspective in 2003 as an organizational framework for our programmatic activities, we recognized that emerging scientific evidence in the literature demonstrated the importance of social and environmental factors in determining health and health equity, and supported a general impression in the field that prenatal care was not enough to improve birth outcomes. The Life Course Perspective suggests that many of the risk and protective factors that influence health and wellbeing across the lifespan also play an important role in birth outcomes and in health and quality of life beyond the initial years. In this article, we describe the Life Course Perspective and how one local Maternal and Child Health Program adopted and adapted this paradigm by creating and launching a Life Course Initiative to guide our programs and services. The Life Course Initiative implemented by CCHS is designed to reduce inequities in birth outcomes, improve reproductive potential, and change the health of future generations by introducing a longitudinal, integrated, and ecological approach to implementing maternal and child health programs.

Clinical indications and determinants of the rise of cesarean section in three hospitals in rural China.

This study investigated changes in cesarean delivery rate and cesarean indications in 3 county-level hospitals in rural China. Hospital delivery records in 1997 and 2003 were used to examine the reasons behind the changes. In Chengde County Hospital, the cesarean delivery rate increased from 28% in 1997 to 54% in 2003. The rate increased from 43% in 1997 to 65% in 2003 in Anxian County Hospital and Anxian Maternal and Child Health Hospital. The dramatic increase in cesarean delivery in the study hospitals was associated with a shift from more severe to mild or no clinical indications. The ratio of mild to moderate to severe hypertension increased substantially. More than half of the cephalopelvic disproportion cases were diagnosed prior to labor. The majority of nuchal cord cases were diagnosed without fetal distress. Maternal/family request was the number one cesarean indication in Anxian County Hospital and Anxian MCH Hospital in 2003. Ultrasound evidence of nuchal cord moved from the ninth ranked indication in 1997 to the second in 2003 in Chengde County Hospital.

Disparities in reproductive health-related visits to the emergency department in Maryland by age and race, 1999-2005.

OBJECTIVE: To describe reproductive health-related visits to Maryland emergency departments (EDs) among women aged 15-44 years from 1999 to 2005. METHODS: We obtained data from the Healthcare Cost and Utilization Project State Emergency Department Database and State Inpatient Database. ICD-9-CM diagnosis codes were used to classify reproductive health-related visits. We calculated the annual rate of reproductive health visits to Maryland EDs from 1999 to 2005 for women aged 15-44 years and tested time trends using linear regression. Admission rates were defined as the percentage of ED visits that resulted in inpatient admission. We calculated age-specific and race-specific rate ratios for diagnoses using Poisson regression and admission rate ratios using Cochran-Mantel-Haenszel statistics. RESULTS: From 1999 to 2005, the rate of ED visits in Maryland increased 50%, from 28.0 to 42.1 visits per 1000 women. Lower genital tract infections were the most common diagnosis (21.4%). The rates were higher for women aged 15-24 than for women aged 25-44 (rate ratio 1.18, 95% confidence interval [CI] 1.17-1.18) and nearly three times higher for black women than white women (rate ratio 2.94, 95% CI 2.92-2.96). Admission rates were lower for women aged 15-24 than for women aged 25-44 (rate ratio 0.34, 95% CI 0.33-0.35) and were higher among black than white women (rate ratio 1.16, 95% CI 1.14-1.18). CONCLUSIONS: Disparities by age and race are evident for reproductive health-related ED visits in Maryland, and many of these ED visits are for conditions that are amenable to preventive measures.