检索结果-南通市图书馆

Random-parameters analysis of highway characteristics on crash frequency and injury severity

Journal of Traffic and Transportation Engineering(English Edition) 2016年第3期3卷 236-242页

作者： Bismark R.D.K.Agbelie School of Civil Engineering Purdue University

Factors that affect highway-related crash frequency and injury severity vary across observations. Using a methodology that does not account nor correct for heterogeneity in observed and unobserved crash factors across highway segments may lead to biased and inconsistent estimated coefficients, thus resulting in erroneous inferences. The present paper demonstrates the use of random-parameters models to facilitate and enhance how crash factors affect crash frequency and injury severity along a highway segment. The results indicate that a unit increase in the presence of stop sign along a highway segment reduces crash frequency by 2.471 for 87.24% of the roadway segments. For the remaining 12.76% of the roadway segments, crash frequency is increased by the same margin. Using the random-parameters multinomial logit model, the result indicates that, for 90.89% of the observations, the presence of a stop sign on a highway segment increases the probability of the injury outcome. For 9.11% of the observations, the presence of a stop sign on a highway segment reduces the probability of the injury outcome, and the marginal effect value across observations is 0.0017. Vertical grades greater than 5% increase crash frequency for 58.46% of the highway segments, and decrease for 41.54% of the highway segments by 0.121 for one unit increase in vertical grades.

关键词： Random -parameters Multinomial logit model Negative binomial Heterogeneity Highway crash Highway segment Vertical grade Stop sign marginal effects

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Health insurance and social capital inGhana: a cluster randomised controlled trial

引用

Global Health Research and Policy 2018年第1期3卷 14-24页

作者： Christine J.Fenenga Katalin Buzasi Daniel K.Arhinful Stephen K.O.Duku Alice Ogink Wouter Poortinga Amsterdam Institute for Global Health and Development Paasheuvelweg 241105 BP AmsterdamThe Netherlands University of Groningen Broerstraat 59712 CP GroningenThe Netherlands Noguchi Memorial Institute for Medical Research College of Health SciencesUniversity of GhanaLegonAccraGhana Vrije Universiteit Amsterdam De Boelelaan 11051081 HV AmsterdamThe Netherlands Tinbergen Institute Gustav Mahlerplein 1171082 MS AmsterdamThe Netherlands Cardiff University Cardiff CF103ATWalesUK

Background:The National Health Insurance Scheme(NHIS)was introduced in Ghana in 2003,enrolment is still far from the desired target of universal *** community engagement in the design and management of the system was identified as one of the main *** aim of the current study was to explore the role of social capital in NHIS enrolment in two regions of Ghana,Western and Greater ***:The study involved a cluster-randomised controlled trial of 3246 clients of 64 healthcare facilities who completed both a baseline and a follow-up ***-two facilities were randomly selected to receive two types of *** remaining facilities served as *** interventions were co-designed with *** and follow up surveys included measures of different types of social capital,as well as enrolment in the health insurance ***:The study found that the interventions encouraged NHIS enrolment(from 40.29 to 49.39%(intervention group)versus 36.49 to 36.75%(control group)).Secondly,certain types of social capital are associated with increased enrolment(log-odds ratios(p-values)of three types of vertical social capital are 0.127(<0.01),0.0952(<0.1)and 0.15(<0.01)).Effectiveness of the interventions was found dependent on initial levels of social capital:respondents with lowest measured level of interpersonal trust in the intervention group were about 25%more likely to be insured than similar respondents in the control *** highly trusting respondents this difference was *** was however no evidence that the interventions effect social *** of the study are ***:We showed that the interventions helped to increase enrolment but that the positive effect was not realized by changes in social capital that we hypothesised based on result of the first phase of our *** research should aim to identify other community factors that are part of the enrolment process,whethe

关键词： Ghana Social capital Health insurance marginal effects Cluster randomised controlled trial Systematic client engagement

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：