苦味药材性状分析

苦味是中药药性理论的重要组成部分。不同的物质组成影响着药材性状,也影响着药材性味。选取《中华本草》所载1 728种寒热药性明确的中药,运用数学统计方法,研究了中药苦味与药材性状的关系,认为药材质地、气味、味道、外观颜色共同影响着中药苦味。药材性状质脆、味苦或味涩越多的中药,药材性味越偏向苦味;药材性状气香、味甘、味咸、味辛和白色越多的中药,药材性味越远离苦味。     

The Emerging Hazard of AI‐Related Health Care Discrimination

Artificial intelligence holds great promise for improved health‐care outcomes. But it also poses substantial new hazards, including algorithmic discrimination. For example, an algorithm used to identify candidates for beneficial “high risk care management” programs routinely failed to select racial minorities. Furthermore, some algorithms deliberately adjust for race in ways that divert resources away from minority patients. To illustrate, algorithms have underestimated African Americans’ risks of kidney stones and death from heart failure. Algorithmic discrimination can violate Title VI of the Civil Rights Act and Section 1557 of the Affordable Care Act when it unjustifiably disadvantages underserved populations. This article urges that both legal and technical tools be deployed to promote AI fairness. Plaintiffs should be able to assert disparate impact claims in health‐care litigation, and Congress should enact an Algorithmic Accountability Act. In addition, fairness should be a key element in designing, implementing, validating, and employing AI.     

Using the Americans with Disabilities Act (ADA) as a Tool for Helping Social Work Faculty Develop Cultural Competence in the Area of Disability

Abstract

This article develops the theme of the importance of viewing disability as a part of cultural diversity. The ADA is offered as a tool for helping social work faculty develop cultural competence in the area of disability. Particular emphasis is placed on affirmative approaches for increasing the number of students with disabilities in social work programs. Teaching social work faculty and support staff about disability etiquette is offered with examples of various disabilities. The article encourages social work programs to offer training on disabilities for faculty and support staff.     

Once-weekly oral medication with alendronate does not prevent migration of knee prostheses

Background and purpose Early migration of joint replacements is an effect of poor fixation and can predict late loosening. By reducing the bone resorption after implantation of a joint replacement, it should be possible to enhance the initial fixation of the implant. We studied the effect of once-weekly treatment with alendronate after knee replacement.

Patients and methods We recruited 60 patients (60 knees) with gonarthrosis who were scheduled for a total knee replacement. They were operated on with identical implants and uncemented fixation. 30 patients were treated with a bisphosphonate (alendronate) and 30 patients underwent placebo treatment. The treatment started postoperatively and continued on a weekly basis for 6 months. The fixation of the implants was measured with repeated radiostereometry for 2 years.

Results There was no difference in migration of implants between the two groups.

Conclusion With uncemented fixation of knee implants, no benefit of once-weekly treatment with alendronate, starting postoperatively, could be seen during a 2-year follow-up period.     

Correlates of county-level nonviral sexually transmitted infection hot spots in the US: application of hot spot analysis and spatial logistic regression

PurposeWe used a combination of hot spot analysis (HSA) and spatial regression to examine county-level hot spot correlates for the most commonly reported nonviral sexually transmitted infections (STIs) in the 48 contiguous states in the United States (US).MethodsWe obtained reported county-level total case rates of chlamydia, gonorrhea, and primary and secondary (P&S) syphilis in all counties in the 48 contiguous states from national surveillance data and computed temporally smoothed rates using 2008–2012 data. Covariates were obtained from county-level multiyear (2008–2012) American Community Surveys from the US census. We conducted HSA to identify hot spot counties for all three STIs. We then applied spatial logistic regression with the spatial error model to determine the association between the identified hot spots and the covariates.ResultsHSA indicated that ≥84% of hot spots for each STI were in the South. Spatial regression results indicated that, a 10-unit increase in the percentage of Black non-Hispanics was associated with ≈42% (P < 0.01) [≈22% (P < 0.01), for Hispanics] increase in the odds of being a hot spot county for chlamydia and gonorrhea, and ≈27% (P < 0.01) [≈11% (P < 0.01) for Hispanics] for P&S syphilis. Compared with the other regions (West, Midwest, and Northeast), counties in the South were 6.5 (P < 0.01; chlamydia), 9.6 (P < 0.01; gonorrhea), and 4.7 (P < 0.01; P&S syphilis) times more likely to be hot spots.ConclusionOur study provides important information on hot spot clusters of nonviral STIs in the entire United States, including associations between hot spot counties and sociodemographic factors.     

秦巴山区2乡镇中老年人脑卒中的影响因素

目的探究汉中市40岁以上中老年人脑卒中的影响因素,为该地区制订中老年人脑卒中的干预措施提供科学指导。方法对整群抽取2乡镇开展普查,脑卒中283人,非脑卒中20 242人,对脑卒中影响因素进行单因素和多因素Logistic逐步回归分析。结果单因素分析结果表明:年龄、性别、体育活动少、高血压、血脂异常、肥胖、吸烟、脑卒中家族史、心脏病等均与脑卒中相关(P0.05);多因素分析结果表明:脑卒中家族史OR=7.177、肥胖OR=4.389、高血压OR=3.647、体育活动少OR=2.041、年龄OR=1.342、性别OR=0.565,均与脑卒中密切相关(P0.01)。结论脑卒中家族史为本地区最严重的脑卒中影响因素;肥胖、高血压、体育活动少为中老年人脑卒中的可控影响因素,是本地区脑卒中防治工作干预重点。     

Prevalence and predictive factors of stigmatizing attitudes towards people living with HIV in the remote villages on the Maroni River in French Guiana

The Maroni basin, an isolated region which lies between Suriname and French Guiana, has been affected by the HIV epidemic 10 years after coastal French Guiana. However, the rise in HIV prevalence was sharp with a prevalence exceeding 1% within 10 years. Stigma and discrimination towards people living with HIV (PLWHIV) or “suspected to have HIV” is rampant as reported by health professionals or non-governmental organisations. The objective of this article is to present the first quantitative data from the general population of this region on stigma towards people living with HIV. Data were collected in 2012 by a structured questionnaire among a random sample of 896 individuals residing in remote villages on the Maroni River. Proportion comparisons between the Maroni sample and the sample from the general population on the coastline in 2011 were conducted. Simple and multivariate logistic regression models were used to predict stigmatising attitudes. For all situations involving PLWHIV, the proportion of negative attitudes was significantly higher on the Maroni than in coastal French Guiana (p < 0.001). Findings indicate that the different levels of knowledge, erroneous beliefs and poor situation (not having electricity in one's home; not having French health insurance) were associated with stigmatising attitudes. The present data could help both sides coordinate interventions both at the individual level by improving knowledge and at the community level to change norms in order to reduce stigma and discrimination aiming for increased impact.     

435例原发性高血压患者脉图参数与心血管危险分层的相关性分析

目的 本研究旨在探讨原发性高血压患者脉图参数与心血管危险分层的相关性，为原发性高血压患者心血管风险事件预警提供中医特色的依据。方法 采集435例原发性高血压患者的症状体征、脉象信息、生化指标等，分为低中危组、高危组、很高危组，采用单因素方差分析、秩和检验、有序logistic回归分析等方法，探讨原发性高血压患者脉图参数与心血管危险分层的相关性。结果 ①高血压低中危组→高危组→很高危组患者病程逐渐延长，两两组间比较有统计学差异；②高血压低中危组→高危组→很高危组患者的脉图参数H3/H1、H4/H1逐渐上升；高血压患者很高危组H5/H1、T1/T低于低中危组；③有序logistic回归分析结果显示，脉图参数T1、T4、T5、T为影响因素。结论 病程、血脂、肾功能是高血压患者心血管危险分层的影响因素之一。心血管危险分层等级的升高与脉图参数H3/H1、H4/H1、T5、T的升高及H5/H1、T4、T1的降低相关，说明脉图能一定程度上反映原发性高血压患者血管壁增厚、血管内壁受损、血管硬化及左心室收缩功能的减退程度。