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861.
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PURPOSE: We sought to identify factors associated with contemplating versus not contemplating offering medical abortion with mifepristone among physicians not opposed to it. METHODS: We analyzed data from a Kaiser Family Foundation survey of a nationally representative sample of 790 American obstetrician/gynecologists and primary care physicians. Our study sample consisted of 419 physicians who were not personally opposed to medical abortion and could be classified as not actively considering (precontemplation) or actively considering (contemplation) offering mifepristone. We conducted multivariate logistic regression to predict being unlikely to offer mifepristone (i.e., in the precontemplation stage of change). PRINCIPAL FINDINGS: In 2001, 1 year after U.S. Food and Drug Administration (FDA) approval, 5% of physicians surveyed were offering mifepristone. Among the 750 physicians not offering mifepristone, 57% were not opposed. Of those not opposed, 74% reported that they were unlikely to offer mifepristone in the next year (precontemplation) as compared to 23% who might offer it (contemplation). Independent predictors of being in the precontemplation stage were being a primary care versus OB/GYN physician (odds ratio [OR] 3.29, p = .02), being in private versus hospital-based practice (OR 2.40, p = .03), and lacking concerns about FDA regulations (OR 2.06, p = .01) or violence and protests (OR 1.93, p = .03) as barriers to offering mifepristone. CONCLUSIONS: For precontemplation-stage physicians, the most efficient strategy for increasing the availability of medical abortion may be to design programs that emphasize clinical benefits and feasibility to stimulate interest in the procedure. For contemplation-stage physicians, the optimum approach may be one that helps to overcome barriers associated with FDA regulations and concerns about violence and protests.  相似文献   
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Introduction The aim of this study was to establish the value of thalium-201 single-photon emission computed tomography (201Tl-SPECT) in the detection of recurrences in the follow-up of patients with treated primary neuroepithelial tumours. Material and methods Sixty-three201Tl-SPECT were performed in 36 patients with glioma (12 males, mean age of 46±13 years). All patients underwent surgery and adjuvant radiotherapy (and some of them received chemotherapy). All patients were submitted to morphological neuroimaging techniques as well (and201 Tl-SPECT). Mean follow-up was 18.3±14.6 months. Gold standard was based on clinical follow-up, therapeutical decisions (at least 4 months after201Tl-SPECT) and imaging features. Results Sensitivity and specificity of201Tl-SPECT to detect glioma recurrences were 90% and 100% respectively and 93% accuracy. Sensitivity and specificity for high grade tumours, were 100% respectively. Due to 4 false negatives, sensitivity and specificity for low grade gliomas were 78% and 100%. In the positive201Tl-SPECT group of patients overall survival was 13.64% at the end of the study. The negative201Tl-SPECT group had 84.62% overall survival at the end of the study (p=0.0003). Conclusions 201Tl-SPECT is a valuable and noninvasive diagnostic procedure to detect recurrence or progression disease for treated gliomas and ependymomas.201Tl-SPECT has a good correlation with short term prognosis with excellent diagnostic accuracy.  相似文献   
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Domestic violence is a dangerous and prevalent social problem affecting up to 4 million women and countless children annually. Shelters offer safety and an opportunity for change during the crisis of family violence. These individuals also have the potential for retraumatization if leadership within the program recapitulates the abuse and coercion felt at home. This article reviews three related trends through the lens of power and control—domestic violence policy and service, models of leadership, and the study of traumatic stress disorders and recovery—and describes their implications for modern shelter service delivery.  相似文献   
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OBJECTIVE: The purpose of this study was to describe the prevalence of human papillomavirus infection and the likelihood of human papillomavirus expression and Papanicolaou test abnormalities among women who have and who are at risk of having human immunodeficiency virus infection. STUDY DESIGN: Cross-sectional analysis of 767 women who had human immunodeficiency virus infection and 390 women who were at risk of having human immunodeficiency virus infection in 4 cities in the United States. RESULTS: Women who were infected with human immunodeficiency virus were more likely than women who were not infected to have human papillomavirus infection (prevalence ratio, 2.3; 95% CI, 2.0-2.8) but had similar human papillomavirus types. Among women who tested positive for human papillomavirus by polymerase chain reaction, human immunodeficiency virus infection was associated with a high level of human papillomavirus expression (prevalence ratio, 1.3-1.6) and multiple human papillomavirus infections (prevalence ratio, 1.9). However, among women with a high level of human papillomavirus expression or infection with multiple types, there was no association between human immunodeficiency virus serostatus and risk of cervical dysplasia. CONCLUSION: Through its association with a high level of expression and multiple human papillomavirus infections, human immunodeficiency virus infection may increase the risk of cervical dysplasia in women who are infected with human papillomavirus.  相似文献   
867.
Doppler ultrasound grading of internal carotid artery (ICA) stenosis using the two parameters of spectral analysis and internal carotid to common carotid artery peak systolic velocity (ICA/CCA PSV) ratio is well established. The improvements in B‐Mode ultrasound image quality now make direct ultrasound NASCET‐style stenosis measurement possible. We demonstrate that longitudinal B‐mode imaging can produce accurate North American Symptomatic Carotid Endarterectomy Trial (NASCET) style measurements which have good correlation with angiographic images. Ultrasound B‐mode stenosis measurement provides a third parameter which can be used in conjunction with the two Doppler parameters for the assessment of ICA stenosis. Taking the highest grade of stenosis of the three parameters produces a sensitivity of 100% for the detection of greater than 50% and greater than 80% stenosis with specificity of 66 and 90%, respectively. The performance of satisfactory B‐mode imaging against digital subtraction angiography (DSA) was very encouraging. When the B‐mode stenosis measurement showed a normal ICA, the positive predictive value (PPV) of the DSA being normal was 94%. When the B‐mode stenosis measurement was 35% or less, the PPV of the DSA stenosis being 35% or less was 93%. These excellent results support the use of good quality B‐Mode NASCET style stenosis measurement as the initial ultrasound measurement, with Doppler ultrasound only being performed when the B‐mode stenosis measurement is greater than 35% or if the B‐mode image is unsatisfactory. This approach would save considerable time enabling better utilization of ultrasound resources.  相似文献   
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CONTEXT AND OBJECTIVE: Accurate fetal weight estimation is important for labor and delivery management. So far, there has not been any conclusive evidence to indicate that any technique for fetal weight estimation is superior to any other. Clinical formulas for fetal weight estimation are easy to use but have not been extensively studied in the literature. This study aimed to evaluate the accuracy of clinical formulas for fetal weight estimation compared to maternal and ultrasound estimates. DESIGN AND SETTING: Prospective study involving 100 full-term, cephalic, singleton pregnancies delivered within three days of fetal weight estimation. The setting was a tertiary public teaching hospital in S?o Paulo, Brazil. METHODS: Upon admission, the mother's opinion about fetal weight was recorded. Symphyseal-fundal height and abdominal girth were measured and two formulas were used to calculate fetal weight. An ultrasound scan was then performed by a specialist to estimate fetal weight. The four estimates were compared with the birth weight. The accuracy of the estimates was assessed by calculating the percentage that was within 10% of actual birth weight for each method. The chi-squared test was used for comparisons and p < 0.05 was considered significant. RESULTS: The birth weight was correctly estimated (+/- 10%) in 59%, 57%, 61%, and 65% of the cases using the mother's estimate, two clinical formulas, and ultrasound estimate, respectively. The accuracy of the four methods did not differ significantly. CONCLUSION: Clinical formulas for fetal weight prediction are as accurate as maternal and ultrasound estimates.  相似文献   
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