发布求助
文献互助 智能选刊 最新文献

Stata Journal最新文献

筛选
英文 中文
iefieldkit: Commands for primary data collection and cleaning (update) iefieldkit:用于主数据收集和清理的命令(更新)
2区 数学
Stata Journal Pub Date : 2023-09-01 DOI: 10.1177/1536867x231196496
Kristoffer Bjärkefur, Luíza Cardoso de Andrade, Benjamin Daniels
{"title":"iefieldkit: Commands for primary data collection and cleaning (update)","authors":"Kristoffer Bjärkefur, Luíza Cardoso de Andrade, Benjamin Daniels","doi":"10.1177/1536867x231196496","DOIUrl":"https://doi.org/10.1177/1536867x231196496","url":null,"abstract":"Data collection and cleaning workflows implement highly repetitive but extremely important processes. In this article, we describe an update to iefieldkit, a package developed to standardize and simplify best practices for high-quality primary data collection across the World Bank’s Development Impact Evaluation department. The first release of iefieldkit provided workflows to automate error checking for Open Data Kit-based survey modules, duplicate management, data cleaning, and codebook creation. This update to the package includes improved commands to document and implement data point corrections, verify the structure or contents of data using codebooks, and create replicationready data through automated variable subsetting.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Facilities for optimizing and designing multiarm multistage (MAMS) randomized controlled trials with binary outcomes 优化和设计具有二元结果的多臂多阶段随机对照试验的工具
2区 数学
Stata Journal Pub Date : 2023-09-01 DOI: 10.1177/1536867x231196295
Babak Choodari-Oskooei, Daniel J. Bratton, Mahesh K. B. Parmar
{"title":"Facilities for optimizing and designing multiarm multistage (MAMS) randomized controlled trials with binary outcomes","authors":"Babak Choodari-Oskooei, Daniel J. Bratton, Mahesh K. B. Parmar","doi":"10.1177/1536867x231196295","DOIUrl":"https://doi.org/10.1177/1536867x231196295","url":null,"abstract":"We introduce two commands, nstagebin and nstagebinopt, that can be used to facilitate the design of multiarm multistage (MAMS) trials with binary outcomes. MAMS designs are a class of efficient and adaptive randomized clinical trials that have successfully been used in many disease areas, including cancer, tuberculosis, maternal health, COVID-19, and surgery. The nstagebinopt command finds a class of efficient “admissible” designs based on an optimality criterion using a systematic search procedure. The nstagebin command calculates the stagewise sample sizes, trial timelines, and overall operating characteristics of MAMS designs with binary outcomes. Both commands allow the use of Dunnett’s correction to account for multiple testing. We also use the ROSSINI 2 MAMS design, an ongoing MAMS trial in surgical wound infection, to illustrate the capabilities of both commands. The new commands facilitate the design of MAMS trials with binary outcomes where more than one research question can be addressed under one protocol.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
hdps: A suite of commands for applying high-dimensional propensity-score approaches hdps:一套用于应用高维倾向得分方法的命令
2区 数学
Stata Journal Pub Date : 2023-09-01 DOI: 10.1177/1536867x231196288
John Tazare, Liam Smeeth, Stephen J. W. Evans, Ian J. Douglas, Elizabeth J. Williamson
{"title":"hdps: A suite of commands for applying high-dimensional propensity-score approaches","authors":"John Tazare, Liam Smeeth, Stephen J. W. Evans, Ian J. Douglas, Elizabeth J. Williamson","doi":"10.1177/1536867x231196288","DOIUrl":"https://doi.org/10.1177/1536867x231196288","url":null,"abstract":"Large healthcare databases are increasingly used for research investigating the effects of medications. However, a key challenge is capturing hard-to-measure concepts (often relating to frailty and disease severity) that can be crucial for successful confounder adjustment. The high-dimensional propensity score has been proposed as a data-driven method to improve confounder adjustment within healthcare databases and was developed in the context of administrative claims databases. We present hdps, a suite of commands implementing this approach in Stata that assesses the prevalence of codes, generates high-dimensional propensity-score covariates, performs variable selection, and provides investigators with graphical tools for inspecting the properties of selected covariates.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Review of Environmental Econometrics Using Stata, by Christopher F. Baum and Stan Hurn 《使用Stata的环境计量经济学综述》，作者:克里斯托弗·f·鲍姆和斯坦·胡恩
2区 数学
Stata Journal Pub Date : 2023-09-01 DOI: 10.1177/1536867x231196497
Ryan P. Thombs
{"title":"Review of Environmental Econometrics Using Stata, by Christopher F. Baum and Stan Hurn","authors":"Ryan P. Thombs","doi":"10.1177/1536867x231196497","DOIUrl":"https://doi.org/10.1177/1536867x231196497","url":null,"abstract":"In this article, I review Environmental Econometrics Using Stata, by Christopher F. Baum and Stan Hurn (2021, Stata Press).","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
cntraveltime: Travel distance and travel time in China 旅行时间:在中国旅行的距离和时间
2区 数学
Stata Journal Pub Date : 2023-09-01 DOI: 10.1177/1536867x231196292
Xueren Zhang, Yuan Xue, Chuntao Li
{"title":"cntraveltime: Travel distance and travel time in China","authors":"Xueren Zhang, Yuan Xue, Chuntao Li","doi":"10.1177/1536867x231196292","DOIUrl":"https://doi.org/10.1177/1536867x231196292","url":null,"abstract":"In this article, we introduce the command cntraveltime, which can calculate both the travel distance and the travel time between two locations in China with respect to different modes of transportation (driving, public transport, and cycling). Existing commands such as georoute, traveltime, and mqtime have difficulties in parsing Chinese locations. cntraveltime solves this outstanding challenge via a feature that enables it to call route-planning services from the Baidu Maps Open Platform. The results of rigorous testing on the features of the command show that, relative to similar existing commands, cntraveltime has the highest capacity in terms of functionality and precision. This suggests that it can be regarded as a useful complement to other existing commands, especially when calculating travel distance and time for locations within China.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135428962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Speaking Stata: Replacing missing values: The easiest problems 说话状态:替换缺失的值:最简单的问题
2区 数学
Stata Journal Pub Date : 2023-09-01 DOI: 10.1177/1536867x231196519
Nicholas J. Cox
{"title":"Speaking Stata: Replacing missing values: The easiest problems","authors":"Nicholas J. Cox","doi":"10.1177/1536867x231196519","DOIUrl":"https://doi.org/10.1177/1536867x231196519","url":null,"abstract":"Missing values are common in real datasets, and what to do about them is a large and challenging question. This column focuses on the easiest problems in which a researcher is clear, or at least highly confident, about what missing values should be instead, implying a deterministic replacement. The main tricks are copying values from observation to observation and using the ipolate command. Both may often be extended simply to panel or longitudinal datasets or to other datasets with a group structure, such as data on individuals within families or households. This column includes how to satisfy constraints that interpolation is confined to filling gaps between values known to be equal or to observations moderately close to a known value in time or in some other sequence or position variable.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135429098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Color palettes for Stata graphics: An update Stata图形的调色板:更新
IF 4.8 2区 数学
Stata Journal Pub Date : 2023-06-01 DOI: 10.1177/1536867X231175264
Ben Jann
{"title":"Color palettes for Stata graphics: An update","authors":"Ben Jann","doi":"10.1177/1536867X231175264","DOIUrl":"https://doi.org/10.1177/1536867X231175264","url":null,"abstract":"This article is an update to Jann (2018a, Stata Journal 18: 765–785). It contains a comprehensive discussion of the colorpalette command, including various changes and additions that have been made to the software since its first publication. Command colorpalette provides colors for use in Stata graphics. In addition to Stata’s default colors, colorpalette supports a variety of named colors, a selection of palettes that have been proposed by users, numerous collections of palettes and colormaps from sources such as ColorBrewer, Carto, D3.js, or Matplotlib, as well as color generators in different color spaces. Furthermore, a new command called colorcheck is presented that can be used to evaluate whether colors are distinguishable by people suffering from color vision deficiency.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45687014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Visualizing uncertainty in a two-dimensional estimate using confidence and comparison regions 利用置信度和比较区域可视化二维估计中的不确定性
IF 4.8 2区 数学
Stata Journal Pub Date : 2023-06-01 DOI: 10.1177/1536867X231175314
Maren Eckert, W. Vach
{"title":"Visualizing uncertainty in a two-dimensional estimate using confidence and comparison regions","authors":"Maren Eckert, W. Vach","doi":"10.1177/1536867X231175314","DOIUrl":"https://doi.org/10.1177/1536867X231175314","url":null,"abstract":"Recently, Eckert and Vach (2020, Biometrical Journal 62: 598–609) pointed out that both confidence and comparison regions are useful tools to visualize uncertainty in a two-dimensional estimate. Both types of regions can be based on inverting Wald tests or likelihood-ratio tests. confcomptwo enables Stata users to draw both types of regions following one of the two principles for various two-dimensional estimation problems. The use of confcomptwo is illustrated by several examples.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44706138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Consistent subsets: Computing the Houtman–Maks index in Stata 一致子集：Stata中Houtman-Maks指数的计算
IF 4.8 2区 数学
Stata Journal Pub Date : 2023-06-01 DOI: 10.1177/1536867X231175345
Marcos Demetry, P. Hjertstrand
{"title":"Consistent subsets: Computing the Houtman–Maks index in Stata","authors":"Marcos Demetry, P. Hjertstrand","doi":"10.1177/1536867X231175345","DOIUrl":"https://doi.org/10.1177/1536867X231175345","url":null,"abstract":"The Houtman–Maks index is a measure of the size of a violation of utility-maximizing (that is, rational) behavior. In this article, we introduce the command hmindex, which calculates the Houtman–Maks index for a dataset of prices and observed choices of a consumer. The command is illustrated with an empirical application.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46348586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stata tip 152: if and if: When to use the if qualifier and when to use the if command Stata提示152：if和if：何时使用if限定符以及何时使用if命令
IF 4.8 2区 数学
Stata Journal Pub Date : 2023-06-01 DOI: 10.1177/1536867x231175349
N. Cox, C. Schechter
{"title":"Stata tip 152: if and if: When to use the if qualifier and when to use the if command","authors":"N. Cox, C. Schechter","doi":"10.1177/1536867x231175349","DOIUrl":"https://doi.org/10.1177/1536867x231175349","url":null,"abstract":"Stata has an if qualifier and an if command. Here we discuss generally when you should use either and specifically flag a common pitfall in using the if command. In a nutshell, the pitfall arises from confusing the two constructs: the if command does not loop over the data but, at most, looks in the first observation of a dataset. There has long been a StataCorp FAQ on this topic (Wernow 2005), but we and others have usually tried to explain matters otherwise. This tip is intended as a more durable version of the story that should be easier to find than occasional Statalist postings that are vivid when read but hard to find later.","PeriodicalId":51171,"journal":{"name":"Stata Journal","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49499920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信