Dense Breast Notification Laws: Impact on Downstream Imaging After Screening Mammography.

Dense breast tissue is a common finding that decreases the sensitivity of mammography in detecting cancer. Many states have recently enacted dense breast notification (DBN) laws to provide patients with information to help them make better-informed decisions about their health. To test whether DBN legislation affected the probability of screening mammography follow-up by ultrasound and magnetic resonance imaging (MRI), we examined the proportion of times screening mammography was followed by ultrasound or MRI for a series of months pre- and post-legislation. The subjects were women aged 40 to 64 years, covered by private health insurance, undergoing screening mammography from 2007 to 2014. Except for Hawaii, Maryland, and New York, DBN legislation significantly increased the probability of ultrasound follow-up in all states that implemented DBN legislation before December 2014. It also increased the probability of MRI follow-up in California, North Carolina, Pennsylvania, and Texas. The financial and access consequences merit further study.

Cost-effectiveness of preexposure prophylaxis for HIV prevention for conception in the United States.

OBJECTIVE: The aim of this study was to investigate the value of coformulated Tenofovir disoproxil fumarate and emtricitabine (TDF/FTC) for preexposure prophylaxis (PrEP) for conception in the U.S. and to identify scenarios in which 'Undetectable = Untransmittable' (U = U) may not be adequate, and rather, PrEP or assisted reproduction would improve outcomes. DESIGN: We developed a Markov cohort simulation model to estimate the incremental benefits and cost-effectiveness of PrEP compared with alternative safer conception strategies, including combination antiretroviral therapy (cART) alone for the HIV-infected partner and assisted reproductive technologies. We modelled various scenarios in which HIV RNA suppression in the male partner was less than perfect. SETTING: U.S. healthcare sector perspective. PARTICIPANTS: Serodiscordant couples in the U.S. was composed of an HIV-infected male and HIV-uninfected female seeking conception. INTERVENTION: Economic analysis. MAIN OUTCOME MEASURE(S): Cumulative risks of HIV transmission to women and babies, maternal life expectancy, discounted quality-adjusted life years (QALY), discounted lifetime medical costs and incremental cost-effectiveness ratios. RESULTS: cART with condomless intercourse limited to ovulation was the preferred HIV prevention strategy among women seeking to conceive with an HIV-infected partner who is HIV-suppressed. PrEP was not cost-effective for women who had partners who were virologically suppressed. When the probability of male partner HIV suppression was low and we assumed generic pricing of PrEP, PrEP was cost-effective, and sometimes even cost-saving compared with cART alone. CONCLUSION: From a U.S. healthcare sector perspective, when the male partner was not reliably suppressed, PrEP became economically attractive, and in some cases, cost-saving.

Characteristics of State Policies Impact Health Care Delivery: An Analysis of Mammographic Dense Breast Notification and Insurance Legislation.

BACKGROUND: Increased breast tissue density may mask cancer and thus decrease the diagnostic sensitivity of mammography. A patient group advocacy led to the implementation of laws to increase the awareness of breast tissue density and to improve access to supplemental imaging in many states. Given limited evidence about best practices, variation exists in several characteristics of adopted policies. OBJECTIVE: To identify which characteristics of state-level policies with regard to dense breast tissue were associated with increased use of downstream breast ultrasound. RESEARCH DESIGN: This was a retrospective series of monthly cross-sections of screening mammography procedures before and after implementation of laws. SUBJECTS: A sample of 13,481,554 screening mammography procedures extracted from the MarketScan Research database performed between 2007 and 2014 on privately insured women aged 40-64 years that resided in a state that had implemented relevant legislation during that period. MEASURES: The outcome was an indicator of whether breast ultrasound imaging followed a screening mammography procedure within 30 days. The main independent variables were policy characteristics indicators. RESULTS: Notification of patients about issues surrounding increased breast density was associated with increased follow-up by ultrasound by 1.02 percentage points (P=0.016). Some policy characteristics such as the explicit suggestion of supplemental imaging or mandated coverage of supplemental imaging by health insurance augmented that effect. Other policy characteristics moderated the effect. CONCLUSIONS: The heterogeneous effect of state legislation with regard to dense breast tissue on screening mammography follow-up by ultrasound may be explained by specific and unique characteristics of the approaches taken by a variety of states.

Contribution of patient, physician, and environmental factors to demographic and health variation in colonoscopy follow-up for abnormal colorectal cancer screening test results.

BACKGROUND: Patient, physician, and environmental factors were identified, and the authors examined the contribution of these factors to demographic and health variation in colonoscopy follow-up after a positive fecal occult blood test/fecal immunochemical test (FOBT/FIT) screening. METHODS: In total, 76,243 FOBT/FIT-positive patients were identified from 120 Veterans Health Administration (VHA) facilities between August 16, 2009 and March 20, 2011 and were followed for 6 months. Patient demographic (race/ethnicity, sex, age, marital status) and health characteristics (comorbidities), physician characteristics (training level, whether primary care provider) and behaviors (inappropriate FOBT/FIT screening), and environmental factors (geographic access, facility type) were identified from VHA administrative records. Patient behaviors (refusal, private sector colonoscopy use) were estimated with statistical text mining conducted on clinic notes, and follow-up predictors and adjusted rates were estimated using hierarchical logistic regression. RESULTS: Roughly 50% of individuals completed a colonoscopy at a VHA facility within 6 months. Age and comorbidity score were negatively associated with follow-up. Blacks were more likely to receive follow-up than whites. Environmental factors attenuated but did not fully account for these differences. Patient behaviors (refusal, private sector colonoscopy use) and physician behaviors (inappropriate screening) fully accounted for the small reverse race disparity and attenuated variation by age and comorbidity score. Patient behaviors (refusal and private sector colonoscopy use) contributed more to variation in follow-up rates than physician behaviors (inappropriate screening). CONCLUSIONS: In the VHA, blacks are more likely to receive colonoscopy follow-up for positive FOBT/FIT results than whites, and follow-up rates markedly decline with advancing age and comorbidity burden. Patient and physician behaviors explain race variation in follow-up rates and contribute to variation by age and comorbidity burden. Cancer 2017;123:3502-12. Published 2017. This article is a US Government work and is in the public domain in the USA.

Predictors of Adherence to Post-Polypectomy Surveillance Colonoscopy.

OBJECTIVE: To identify predictors of adherence with surveillance colonoscopy at a safety-net hospital. METHODS: We evaluated average-risk patients aged 50-75 with adenomas diagnosed at screening colonoscopy between 1/1/05-12/31/07. The primary outcome was on-time follow-up defined as attendance at surveillance colonoscopy within 5.5 years of screening colonoscopy. RESULTS: Among 881 patients, of whom 38% were English-speaking non-Hispanic Blacks, 38.3% attended on-time surveillance colonoscopy. In unadjusted analyses, ≥3 PCP visits after baseline colonoscopy (OR 3.6 [2.5-5.0]), "adenoma" on the EMR problem list (OR 2.2 [1.6-2.9]), and Charlson Index ≥1 (OR 1.4 [1.0-1.8]) were associated with adherence. "Adenoma" on the EMR problem list remained significant in multivariable analyses (aOR 1.8 [1.3-2.5]). A significant interaction was observed between ethnicity/language and PCP visits (p=.003). CONCLUSION: Many adenoma-bearing patients fail to attend surveillance colonoscopy in a safety-net setting. Adding "adenomas" to the EMR problem list improved attendance, suggesting that system-level interventions can increase adherence.

The Role of Organizational Factors in the Provision of Comprehensive Women's Health in the Veterans Health Administration.

BACKGROUND: Increasing numbers of women veterans present an organizational challenge to a health care system that historically has served men. Women veterans require comprehensive women's health services traditionally not provided by the Veterans Health Administration. OBJECTIVE: Examine the association of organizational factors and adoption of comprehensive women's health care. STUDY DESIGN: Cross-sectional analysis of the 2007 Veterans Health Administration National Survey of Women Veterans Health Programs and Practices. METHODS: Dependent measures included a) model of women's health care: separate women's health clinic (WHC), designated women's health provider in primary care (DWHP), both (WHC+DWHP), or neither and b) the availability of five women's health services: cervical cancer screening and evaluation and management of vaginitis, menstrual disorders, contraception, and menopause. Exposure variables were organizational factors drawn from the Greenhalgh model of diffusion of innovations including measures of structure, absorptive capacity, and system readiness for innovation. RESULTS: The organizational factors of a gynecology clinic, an academic affiliation with a medical school, a women's health representative on one or more high-impact committees, and a greater caseload of women veterans were more common at sites with WHCs and WHC+DWHPs, compared with sites relying on general primary care with or without a DWHP. Academic affiliation and high-impact committee involvement remained significant in multivariable analysis. Sites with WHCs or WHC+DWHPs were more likely to offer all five women's health services. CONCLUSION: Facilities with greater apparent absorptive capacity (academic affiliation and women's health representation on high-impact committees) are more likely to adopt WHCs. Facilities with separate WHCs are more likely to deliver a package of women's health services, promoting comprehensive care for women veterans.

Factors Associated With Missed and Cancelled Colonoscopy Appointments at Veterans Health Administration Facilities.

BACKGROUND & AIMS: Cancelled and missed colonoscopy appointments waste resources, increase colonoscopy delays, and can adversely affect patient outcomes. We examined individual and organizational factors associated with missed and cancelled colonoscopy appointments in Veteran Health Administration facilities. METHODS: From 69 facilities meeting inclusion criteria, we identified 27,994 patients with colonoscopy appointments scheduled for follow-up, on the basis of positive fecal occult blood test results, between August 16, 2009 and September 30, 2011. We identified factors associated with colonoscopy appointment status (completed, cancelled, or missed) by using hierarchical multinomial regression. Individual factors examined included age, race, sex, marital status, residence, drive time to nearest specialty care facility, limited life expectancy, comorbidities, colonoscopy in the past decade, referring facility type, referral month, and appointment lead time. Organizational factors included facility region, complexity, appointment reminders, scheduling, and prep education practices. RESULTS: Missed appointments were associated with limited life expectancy (odds ratio [OR], 2.74; P = .0004), no personal history of polyps (OR, 2.74; P < .0001), high facility complexity (OR, 2.69; P = .007), dual diagnosis of psychiatric disorders and substance abuse (OR, 1.82; P < .0001), and opt-out scheduling (OR, 1.57; P = .02). Cancelled appointments were associated with age (OR, 1.61; P = .0005 for 85 years or older and OR, 1.44; P < .0001 for 65-84 years old), no history of polyps (OR, 1.51; P < .0001), and opt-out scheduling (OR, 1.26; P = .04). Additional predictors of both outcomes included race, marital status, and lead time. CONCLUSIONS: Several factors within Veterans Health Administration clinic control can be targeted to reduce missed and cancelled colonoscopy appointments. Specifically, developing systems to minimize referrals for patients with limited life expectancy could reduce missed appointments, and use of opt-in scheduling and reductions in appointment lead time could improve both outcomes.

Organizational predictors of colonoscopy follow-up for positive fecal occult blood test results: an observational study.

BACKGROUND: This study assessed the contribution of organizational structures and processes identified from facility surveys to follow-up for positive fecal occult blood tests [FOBT-positive (FOBT(+))]. METHODS: We identified 74,104 patients with FOBT(+) results from 98 Veterans Health Administration (VHA) facilities between August 16, 2009 and March 20, 2011, and followed them until September 30, 2011, for completion of colonoscopy. We identified patient characteristics from VHA administrative records, and organizational factors from facility surveys completed by primary care and gastroenterology chiefs. We estimated predictors of colonoscopy completion within 60 days and six months using hierarchical logistic regression models. RESULTS: Thirty percent of patients with FOBT(+) results received colonoscopy within 60 days and 49% within six months. Having gastroenterology or laboratory staff notify gastroenterology providers directly about FOBT(+) cases was a significant predictor of 60-day [odds ratio (OR), 1.85; P = 0.01] and six-month follow-up (OR, 1.25; P = 0.008). Additional predictors of 60-day follow-up included adequacy of colonoscopy appointment availability (OR, 1.43; P = 0.01) and frequent individual feedback to primary care providers about FOBT(+) referral timeliness (OR, 1.79; P = 0.04). Additional predictors of six-month follow-up included using guideline-concordant surveillance intervals for low-risk adenomas (OR, 1.57; P = 0.01) and using group appointments and combined verbal-written methods for colonoscopy preparation instruction (OR, 1.48; P = 0.0001). CONCLUSION: Directly notifying gastroenterology providers about FOBT(+) results, using guideline-concordant adenoma surveillance intervals, and using colonoscopy preparations instruction methods that provide both verbal and written information may increase overall follow-up rates. Enhancing follow-up within 60 days may require increased colonoscopy capacity and feedback to primary care providers. IMPACT: These findings may inform organizational-level interventions to improve FOBT(+) follow-up.

Nurse practitioner and physician assistant scope of practice in 118 acute care hospitals.

BACKGROUND: Advanced practice providers (APPs), including nurse practitioners (NPs) and physician assistants (PAs) are cost-effective substitutes for physicians, with similar outcomes in primary care and surgery. However, little is understood about APP roles in inpatient medicine. OBJECTIVE: Describe APPs role in inpatient medicine. DESIGN: Observational cross-sectional cohort study. SETTING: One hundred twenty-four Veterans Health Administration (VHA) hospitals. PARTICIPANTS: Chiefs of medicine (COMs) and nurse managers. MEASUREMENTS: Surveys included inpatient medicine scope of practice for APPs and perceived healthcare quality. We conducted bivariate unadjusted and multivariable adjusted analyses. RESULTS: One hundred eighteen COMs (95.2%) and 198 nurse managers (75.0%) completed surveys. Of 118 medicine services, 56 (47.5%) employed APPs; 27 (48.2%) used NPs only, 15 (26.8%) PAs only, and 14 (25.0%) used both. Full-time equivalents for NPs was 0.5 to 7 (mean = 2.22) and PAs was 1 to 9 (mean = 2.23). Daily caseload was similar at 4 to 10 patients (mean = 6.5 patients). There were few significant differences between tasks. The presence of APPs was not associated with patient or nurse manager satisfaction. Presence of NPs was associated with greater overall inpatient and discharge coordination ratings by COMs and nurse managers, respectively; the presence of PAs was associated with lower overall inpatient coordination ratings by nurse managers. CONCLUSIONS: NPs and PAs work on half of VHA inpatient medicine services with broad, yet similar, scopes of practice. There were few differences between their roles and perceptions of care. Given their very different background, regulation, and reimbursement, this has implications for inpatient medicine services that plan to hire NPs or PAs.

Levels and variation in overuse of fecal occult blood testing in the Veterans Health Administration.

BACKGROUND: Policy-makers have called for efforts to reduce overuse of cancer screening tests, including colorectal cancer screening (CRCS). Overuse of CRCS tests other than colonoscopy has not been well documented. OBJECTIVE: To estimate levels and correlates of fecal occult blood test (FOBT) overuse in a national Veterans Health Administration (VHA) sample. DESIGN: Observational PARTICIPANTS: Participants included 1,844 CRCS-eligible patients who responded to a 2007 CRCS survey conducted in 24 VHA facilities and had one or more FOBTs between 2003 and 2009. MAIN MEASURES: We combined survey data on race, education, and income with administrative data on region, age, gender, CRCS procedures, and outpatient visits to estimate overuse levels and variation. We coded FOBTs as overused if they were conducted <10 months after prior FOBT, <9.5 years after prior colonoscopy, or <4.5 years after prior barium enema. We used multinomial logistic regression models to examine variation in overuse by reason (sooner than recommended after prior FOBT; sooner than recommended after colonoscopy, barium enema, or a combination of procedures), adjusting for clustering of procedures within patients, and patients within facilities. KEY RESULTS: Of 4,236 FOBTs received by participants, 885 (21 %) met overuse criteria, with 323 (8 %) sooner than recommended after FOBT, and 562 (13 %) sooner than recommended after other procedures. FOBT overuse varied across facilities (9-32 %, p<0.0001) and region (12-23 %, p< .0012). FOBT overuse after prior FOBT declined between 2003 and 2009 (8 %-5 %, p= .0492), but overuse after other procedures increased (11-19 %, p= .0002). FOBT overuse of both types increased with number of outpatient visits (OR 1.15, p<0.001), but did not vary by patient demographics. More than 11 % of overused FOBTs were followed by colonoscopy within 12 months. CONCLUSIONS: Many FOBTs are performed sooner than recommended in the VHA. Variation in overuse by facility, region, and outpatient visits suggests addressing FOBT overuse will require system-level solutions.

Multilevel interventions: measurement and measures.

BACKGROUND: Multilevel intervention research holds the promise of more accurately representing real-life situations and, thus, with proper research design and measurement approaches, facilitating effective and efficient resolution of health-care system challenges. However, taking a multilevel approach to cancer care interventions creates both measurement challenges and opportunities. METHODS: One-thousand seventy two cancer care articles from 2005 to 2010 were reviewed to examine the state of measurement in the multilevel intervention cancer care literature. Ultimately, 234 multilevel articles, 40 involving cancer care interventions, were identified. Additionally, literature from health services, social psychology, and organizational behavior was reviewed to identify measures that might be useful in multilevel intervention research. RESULTS: The vast majority of measures used in multilevel cancer intervention studies were individual level measures. Group-, organization-, and community-level measures were rarely used. Discussion of the independence, validity, and reliability of measures was scant. DISCUSSION: Measurement issues may be especially complex when conducting multilevel intervention research. Measurement considerations that are associated with multilevel intervention research include those related to independence, reliability, validity, sample size, and power. Furthermore, multilevel intervention research requires identification of key constructs and measures by level and consideration of interactions within and across levels. Thus, multilevel intervention research benefits from thoughtful theory-driven planning and design, an interdisciplinary approach, and mixed methods measurement and analysis.

Choosing models for health care cost analyses: issues of nonlinearity and endogeneity.

OBJECTIVE: To compare methods of analyzing endogenous treatment effect models for nonlinear outcomes and illustrate the impact of model specification on estimates of treatment effects such as health care costs. DATA SOURCES: Secondary data on cost and utilization for inpatients hospitalized in five Veterans Affairs acute care facilities in 2005-2006. STUDY DESIGN: We compare results from analyses with full information maximum simulated likelihood (FIMSL); control function (CF) approaches employing different types and functional forms for the residuals, including the special case of two-stage residual inclusion; and two-stage least squares (2SLS). As an example, we examine the effect of an inpatient palliative care (PC) consultation on direct costs of care per day. DATA COLLECTION/EXTRACTION METHODS: We analyzed data for 3,389 inpatients with one or more life-limiting diseases. PRINCIPAL FINDINGS: The distribution of average treatment effects on the treated and local average treatment effects of a PC consultation depended on model specification. CF and FIMSL estimates were more similar to each other than to 2SLS estimates. CF estimates were sensitive to choice and functional form of residual. CONCLUSIONS: When modeling cost or other nonlinear data with endogeneity, one should be aware of the impact of model specification and treatment effect choice on results.

The association between serious psychological distress and emergency department utilization among young adults in the USA.

PURPOSE: Psychological problems could lead to several adverse health outcomes and were strongly correlated with cigarette smoking and alcohol consumption. In addition, patients treated in EDs were vulnerable to psychological problems. We therefore examined the population-level association between serious psychological distress (SPD) and emergency department (ED) use among young adults in the USA. We also studied the additive effects of SPD, cigarette smoking, and alcohol consumption on the ED presentation. METHODS: The study sample contains 16,873 individuals, using data from the National Health Interview Survey, from 2004 to 2006. Bivariate analyses with chi-square tests and logistic regression analyses are performed. RESULTS: Young adults having SPD were 2.05 times more likely to go to an ED. People having SPD and being a current smoker were 2.52 times more likely to use services in an ED. However, people having SPD and being a heavy drinker did not have a significantly elevated risk of ED use. CONCLUSION: An association between SPD and ED use among US young adults is established in this study. Attempts to decrease excess ED use and the development of strategies to improve mental health among young adults are needed to improve patient health and reduce the health-care burden of high costs and deteriorating ED care quality.

Hospital competition and financial performance: the effects of ambulatory surgery centers.

Ambulatory surgery centers (ASCs), limited-service alternatives for treating surgery patients not requiring an overnight stay, are a health-care service innovation that has proliferated in the U.S. and other countries in recent years. This paper examines the effects of ASC competition on revenues, costs, and profit margins of hospitals that also provided these services as a subset of their general services in Arizona, California, and Texas during the period 1997-2004. We identified all ASCs operating during the period in the 49 Dartmouth Hospital Referral Regions in the three states. The results of fixed effects models suggested that ASCs are meaningful competitors to general hospitals. We found downward pressure on revenues, costs, and profits in general hospitals associated with ASC presence.

Hospital-based palliative care consultation: effects on hospital cost.

CONTEXT: Palliative care consultation teams in hospitals are becoming increasingly more common. Palliative care improves the quality of hospital care for patients with advanced disease. Less is known about its effects on hospital costs. OBJECTIVE: To evaluate the relationship between palliative care consultation and hospital costs in patients with advanced disease. DESIGN, SETTING, AND PATIENTS: An observational study of 3321 veterans hospitalized with advanced disease between October 1, 2004 and September 30, 2006. The sample includes 606 (18%) veterans who received palliative care and 2715 (82%) who received usual hospital care. October 1, 2004 and September 30, 2006. MAIN OUTCOME MEASURES: We studied the costs and intensive care unit (ICU) use of palliative versus usual care for patients in five Veterans Affairs hospitals over a 2-year period. We used an instrumental variable approach to control for unmeasured characteristics that affect both treatment and outcome. RESULTS: The average daily total direct hospital costs were $464 a day lower for the 606 patients receiving palliative compared to the 2715 receiving usual care (p < 0.001). Palliative care patients were 43.7 percentage points less likely to be admitted to ICU during the hospitalization than usual care patients (p < 0.001). COMMENTS: Palliative care for patients hospitalized with advanced disease results in lower costs of care and less utilization of intensive care compared to similar patients receiving usual care. Selection on unobserved characteristics plays an important role in the determination of costs of care.

Impact of patient adherence and test performance on the cost-effectiveness of cervical cancer screening in developing countries: the case of Honduras.

OBJECTIVE: We examined the impact of patient adherence and screening test performance on the cost-effectiveness of visual inspection with acetic acid (VIA) and Pap smears when used with colposcopy for diagnosis. MATERIALS AND METHODS: Cost-effectiveness analysis was performed using computer modeling. The primary outcome was cancer prevalence in the 10 years after screening. Three hypothetical populations of 35-year-old women were compared: never-screened women, women screened with VIA, and women screened with Pap smears. We used community-based data from our screening program in Honduras to estimate screening test sensitivity and specificity, adherence to follow-up, and costs of screening and colposcopy services. Published data were used to model disease outcomes. RESULTS: VIA was more sensitive than Pap smears (70% vs. 4%), less expensive (U.S. 0.23 dollars vs. 3.17 dollars), and the 2-vist VIA system had a higher rate of adherence to follow-up than the 3-visit Pap smear system (84% vs. 38%). VIA had a higher false-positive rate than Pap smears resulting in higher colposcopy referral rates, but more dysplasia was detected and treated. Cost-effectiveness analysis revealed that screening with VIA would cost U.S. 3,198 dollars per cancer case avoided and reduce cancer cases by 42%, versus U.S. 36,802 dollars and 2% for Pap screening. Although Pap smear quality was low in Honduras, sensitivity analysis showed that VIA was more cost-effective than Pap smears, even when test accuracy was equivalent. CONCLUSION: In developing countries, systems barriers can limit the cost-effectiveness of Pap smears. VIA may be a cost-effective alternative for some resource-poor settings, although systems barriers, quality control, and feasibility issues must be considered.

HIV screening among substance-abusing veterans in care.

Calls for screening for HIV infection among individuals with substance use disorders, including alcohol use, are increasing. We investigated HIV screening and its predictors in the Veterans Health Administration (VA) system among such individuals in care. Our primary outcome was retrospective evidence of screening for HIV infection, adjusting for patient demographics and important comorbid disease. Of the 371,749 sample patients with histories of substance use disorders using VA services, 20% had evidence of HIV screening. Screening was lowest among those with alcohol use disorders alone (11%) and highest among those treated in substance use programs (28%) or receiving inpatient care (28%). The findings suggest a low recognition of substance use disorders (especially alcohol use) as risk factors for HIV. Quality improvement initiatives to increase risk factor recognition and screening among patients with substance use disorders will yield benefits in the fight against HIV.