697 research outputs found
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Barriers to Offering Vasectomy at Publicly Funded Family Planning Organizations in Texas
Few publicly funded family planning clinics in the United States offer vasectomy, but little is known about the reasons
this method is not more widely available at these sources of care. Between February 2012 and February 2015, three
waves of in-depth interviews were conducted with program administrators at 54 family planning organizations in
Texas. Participants described their organizationâs vasectomy service model and factors that influenced how frequently
vasectomy was provided. Interview transcripts were coded and analyzed using a theme-based approach. Service
models and barriers to providing vasectomy were compared by organization type (e.g., womenâs health center, public
health clinic) and receipt of Title X funding. Two thirds of organizations did not offer vasectomy on-site or pay
for referrals with family planning funding; nine organizations frequently provided vasectomy. Organizations did not
widely offer vasectomy because they could not find providers that would accept the low reimbursement for the
procedure or because they lacked funding for menâs reproductive health care. Respondents often did not perceive
menâs reproductive health care as a service priority and commented that men, especially Latinos, had limited interest
in vasectomy. Although organizations of all types reported barriers, womenâs health centers and Title X-funded
organizations more frequently offered vasectomy by conducting tailored outreach to men and vasectomy providers.
A combination of factors operating at the health systems and provider level influence the availability of vasectomy at
publicly funded family planning organizations in Texas. Multilevel approaches that address key barriers to vasectomy
provision would help organizations offer comprehensive contraceptive services.Population Research Cente
Hypertension among Oral Contraceptive Users in El Paso, Texas
On the U.S.-Mexico border, residents frequently cross into Mexico to obtain medications or medical care. We previously reported relatively high prevalence of hypertension among Latina oral contraceptive users in El Paso, particularly those obtaining pills over the counter (OTC) in Mexico. Here, we examine factors associated with having hypertension among 411 OTC users and 399 clinic users. We also assess hypertension awareness and interest in using blood pressure kiosks. Women age 35 to 44 and who had BMI â„ 30 kg/m2 had higher odds of having hypertension. 59% of hypertensive women had unrecognized hypertension, and 77% of all participants would use a blood pressure kiosk; there were no significant differences between clinic and OTC users. Alternative approaches to increase access to health screenings are needed in this setting, where OTC pill use among women with unrecognized hypertension confers unique health risksPopulation Research Cente
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The Impact of Information about Abortion Safety on Texas Votersâ Opinions about Restrictive Laws
A substantial gap exists between the scientific evidence demonstrating the safety of abortion in the United States and public opinion about abortion safety. But recent studies suggest that it may be possible to change perceptions about health issues that are based on misinformation. This brief, by researchers from the Texas Policy Evaluation Project, demonstrates that informational statements about the safety of office-based abortion care as currently practiced in Texas significantly reduced perceptions that ambulatory surgical center and admitting privileges requirements would make abortion safer and reduced support for these requirements.Population Research Cente
On Value Maximization and Alternative Objectives of the Firm
The recent literature on firm behavior has been characterized by two contrasting strands of analysis: on the one hand, there is the literature attempting to extend the conventional maxims of profit maximization of competitive firms from the familiar static models to dynamic contexts and into situations of uncertainty. These analyses argue that firms should maximize their stock market value and explore the implications of this for firm behavior. On the other hand, there is the vast and growing "managerial" literature, in which other objectives, such as "satisficing," "sales maximizing," and "maximization of the manager's utility functions" are postulated. The second group of analyses criticize the first as being unrealistic, while the first argues that it provides the best "first approximation" to firm behavior: if firms did not maximize their stock market value, or deviated far from value maximization, someone would attempt to take them over, change the course of action of the firm, and make a pure capital gain. This paper presents a unified framework for analyzing firm behavior which can be used to reconcile these divergent views
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Stockholder Unanimity in Making Production and Financial Decisions
We show that "spanning" does not imply stockholder unanimity if there is trading in the shares of firms. Each basis vector of the space spanned by all firms' output vectors can be treated like a composite commodity. If, in addition to spanning, firms act as price takers with respect to prices of composite commodities, then there is unanimity. We analyze the spanning assumption for the vector space of contingent claims generated by firms' choices of debt-equity ratios. We show that there is a strong relationship between the Modigliani-Miller theorem, spanning, and the existence of a complete set of markets
Status of the tilefish, Lopholatilus chamaeleonticeps, fishery off South Carolina and Georgia and recommendations for management
We used a sex- and age-structured model and CPUE data from commercial and research vessels to assess the current status of the tilefish, Loplwlatilus chamaeleonticeps, substock off South Carolina and Georgia. Based on commercial CPUE data and assumed natural mortality (M) rates of 0.10-0.25, we estimated
that adult population density prior to fishing ranged from 603 to 950 per km2 and stock biomass ranged from 1,130 to 1,570 tonnes (t). Our estimates of the recommended fishing mortality rate ranged from 0.10 eM - 0.10) to 0.48 (M = 0.25), resulting in sustainable yields of 40 (M - 0.10) to 82 t eM = 0.25) per year. We obtained higher estimates of virgin population density (883-1,710 per km~ when research
CPUE data were used. Sustained yield estimates also were higher, ranging from 55 (M - 0.10) to 148 t (M = 0.25) per year. Average estimates of recommended yield from commercial and research CPUE data were 58 and 95 t, respectively. Observed yields in the developing fishery exceeded 100 t in 1981-84 and in 1986; however, current observations indicate that fishing effort has declined to a low level in response to reduced catches. Based on the assumption that commercial CPUE data better reflect population trends, we recommend that the annual harvest not exceed about 50 t, which should result in a stock biomass of about 400-800 t. Apparent limitations on sustainable yield from the fishery probably can be attributed to the long lifespan, slow growth rate, and sedentary nature of tilefish
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Clinic Blood Pressure Underestimates Ambulatory Blood Pressure in an Untreated Employer-Based US Population: Results From the Masked Hypertension Study
Background: Ambulatory blood pressure (ABP) is consistently superior to clinic blood pressure (CBP) as a predictor of cardiovascular morbidity and mortality risk. A common perception is that ABP is usually lower than CBP. The relationship of the CBP minus ABP difference to age has not been examined in the United States.
Methods: Between 2005 and 2012, 888 healthy, employed, middle-aged (mean±SD age, 45±10.4 years) individuals (59% female, 7.4% black, 12% Hispanic) with screening BP <160/105 mmâHg and not taking antihypertensive medication completed 3 separate clinic BP assessments and a 24-hour ABP recording for the Masked Hypertension Study. The distributions of CBP, mean awake ABP (aABP), and the CBPâaABP difference in the full sample and by demographic characteristics were compared. Locally weighted scatterplot smoothing was used to model the relationship of the BP measures to age and body mass index. The prevalence of discrepancies in ABP- versus CBP-defined hypertension statusâwhite-coat hypertension and masked hypertensionâwere also examined.
Results: Average systolic/diastolic aABP (123.0/77.4±10.3/7.4 mmâHg) was significantly higher than the average of 9 CBP readings over 3 visits (116.0/75.4±11.6/7.7 mmâHg). aABP exceeded CBP by >10 mmâHg much more frequently than CBP exceeded aABP. The difference (aABP>CBP) was most pronounced in young adults and those with normal body mass index. The systolic difference progressively diminished, but did not disappear, at older ages and higher body mass indexes. The diastolic difference vanished around age 65 and reversed (CBP>aABP) for body mass index >32.5 kg/m2. Whereas 5.3% of participants were hypertensive by CBP, 19.2% were hypertensive by aABP; 15.7% of those with nonelevated CBP had masked hypertension.
Conclusions: Contrary to a widely held belief, based primarily on cohort studies of patients with elevated CBP, ABP is not usually lower than CBP, at least not among healthy, employed individuals. Furthermore, a substantial proportion of otherwise healthy individuals with nonelevated CBP have masked hypertension. Demonstrated CBPâaABP gradients, if confirmed in representative samples (eg, NHANES [National Health and Nutrition Examination Survey]), could provide guidance for primary care physicians as to when, for a given CBP, 24-hour ABP would be useful to identify or rule out masked hypertension
Contraindications of progestin-only oral contraceptive pills among reproductive-aged women
BACKGROUND: Progestin-only oral contraceptive pills (POPs) have fewer contraindications to use compared to combined pills. However, the overall prevalence of contraindications to POPs among reproductive aged women has not been assessed.
STUDY DESIGN: We collected information on contraindications to POPs in two studies : 1) the Self-Screening Study, a sample of 1,267 reproductive aged women in the general population in El Paso, Texas and 2) the Prospective Study of Oral Contraceptive (OC) Users, a sample of current OC users who obtained their pills in El Paso clinics (n=532) or over the counter (OTC) in Mexican pharmacies (n=514). In the Self-Screening Study, we also compared womenâs self-assessment of contraindications using a checklist to a clinicainâs evaluation.
RESULTS: Only 1.6% of women in the Self-Screening Study were identified as having at least one contraindication to POPs. The sensitivity of the checklist for identifying women with at least one contraindication was 75.0% (95% CI: 50.6-90.4%), and the specificity was 99.4% (95% CI: 98.8-99.7%). In total, 0.6% of women in the Prospective Study of OC Users reported having any contraindication to POPs. There were no significant differences between clinic and OTC users.
CONCLUSION: The prevalence of contraindications to POPs was very low in these samples. POPs may be the best choice for the first OTC oral contraceptive in the US.The Eunice Kennedy Shriver National Institute of Child Health and
Human Development (R01HD047816).http://www.journals.elsevier.com/contraception
Dopamine D2 receptor gene variants and response to rasagiline in early Parkinson's disease:a pharmacogenetic study
The treatment of early Parkinson's disease with dopaminergic agents remains the mainstay of symptomatic therapy for this incurable neurodegenerative disorder. However, clinical responses to dopaminergic drugs vary substantially from person to person due to individual-, drug- and disease-related factors that may in part be genetically determined. Using clinical data and DNA samples ascertained through the largest placebo-controlled clinical trial of the monoamine oxidase B inhibitor, rasagiline (ClinicalTrials.gov number, NCT00256204), we examined how polymorphisms in candidate genes associate with the clinical response to rasagiline in early Parkinson's disease. Variants in genes that express proteins involved in the pharmacokinetics and pharmacodynamics of rasagiline, and genes previously associated with the risk to develop Parkinson's disease were genotyped. The LifeTechnologies OpenArray NT genotyping platform and polymerase chain reaction-based methods were used to analyse 204 single nucleotide polymorphisms and five variable number tandem repeats from 30 candidate genes in 692 available DNA samples from this clinical trial. The peak symptomatic response to rasagiline, the rate of symptom progression, and their relation to genetic variation were examined controlling for placebo effects using general linear and mixed effects models, respectively. Single nucleotide polymorphisms, rs2283265 and rs1076560, in the dopamine D2 receptor gene (DRD2) were found to be significantly associated with a favourable peak response to rasagiline at 12 weeks in early Parkinson's disease after controlling for multiple testing. From a linear regression, the betas were 2.5 and 2.38, respectively, with false discovery rate-corrected P-values of 0.032. These polymorphisms were in high linkage disequilibrium with each other (r(2) = 0.96) meaning that the same clinical response signal was identified by each of them. No polymorphisms were associated with slowing the rate of worsening in Parkinson symptoms from Weeks 12 to 36 after correction for multiple testing. This is the largest and most comprehensive pharmacogenetics study to date examining clinical response to an anti-parkinsonian drug and the first to be conducted in patients with early stage Parkinson's disease receiving monotherapy. The results indicate a clinically meaningful benefit to rasagiline in terms of the magnitude of improvement in parkinsonian symptoms for those with the favourable response genotypes. Future work is needed to elucidate the specific mechanisms through which these DRD2 variants operate in modulating the function of the nigrostriatal dopaminergic system
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