Statistics in Transition最新文献

Rejoinder 反驳

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-034

G. Kalton

引用次数: 0

Quality adjusted GEKS-type indices for price comparisons based on scanner data 质量调整的geks类型指数，用于基于扫描仪数据的价格比较

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-041

Jacek Białek

{"title":"Quality adjusted GEKS-type indices for price comparisons based on scanner\u0000 data","authors":"Jacek Białek","doi":"10.59170/stattrans-2023-041","DOIUrl":"https://doi.org/10.59170/stattrans-2023-041","url":null,"abstract":"A wide variety of retailers (supermarkets, home electronics, Internet shops, etc.)\u0000 provide scanner data containing information at the level of the barcode, e.g. the Global\u0000 Trade Item Number (GTIN). As scanner data provide complete transaction information, we\u0000 may use the expenditure shares of items as weightsfor calculating price indices at the\u0000 lowest (elementary) level of data aggregation. The challenge here is the choice of the\u0000 index formula which should be able to reduce chain drift bias and substitution bias.\u0000 Multilateral index methods seem to be the best choice due to the dynamic character of\u0000 scanner data. These indices work on a wholetime window and are transitive, which is key\u0000 to the elimination of the chain drift effect. Following what is called an identity test,\u0000 however, it may be expected that even when only prices return to their original values,\u0000 the index becomes one. Unfortunately, the commonly used multilateral indices (GEKS,\u0000 CCDI, GK, TPD, TDH) do not meet the identity test. The paper discusses the proposal of\u0000 two multilateral indices and their weighted versions. On the one hand, the design of the\u0000 proposed indices is based on the idea of the GEKS index. On the other hand, similarly to\u0000 the Geary-Khamis method, it requires quality adjusting. It is shown that the proposed\u0000 indices meet the identity test and most other tests. In an empirical and simulation\u0000 study, these indices are compared with the SPQ index, which is relatively new and also\u0000 meets the identity test. The analytical considerations as well as empirical studies\u0000 confirm the high usefulness of the proposed indices.","PeriodicalId":37985,"journal":{"name":"Statistics in Transition","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44852663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A nonparametric analysis of discrete time competing risks data: a comparison of the cause-specific-hazards approach and the vertical approach 离散时间竞争风险数据的非参数分析:特定原因风险方法与垂直方法的比较

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-036

Bonginkosi D. Ndlovu, S. Melesse, T. Zewotir

引用次数: 0

Models for survey nonresponse and bias adjustment techniques 调查无响应和偏差调整技术模型

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-040

H. O. Ayhan

引用次数: 0

Comments on „Probability vs. Nonprobability Sampling: From the Birth of Survey Sampling to the Present Day” by Graham Kalton 评格雷厄姆·卡尔顿《概率与非概率抽样:从抽样调查的诞生到现在

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-030

D. Pfeffermann

引用次数: 0

Discussion of “Probability vs. Nonprobability Sampling: From the Birth of Survey Sampling to the Present Day” by Graham Kalton 论格雷厄姆·卡尔顿的《概率与非概率抽样:从调查抽样的诞生到现在

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-033

R. Münnich

引用次数: 0

Bayesian modelling for semi-competing risks data in the presence of censoring 审查条件下半竞争风险数据的贝叶斯建模

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-044

A. Bhattacharjee, Rajashree Dey

{"title":"Bayesian modelling for semi-competing risks data in the presence of\u0000 censoring","authors":"A. Bhattacharjee, Rajashree Dey","doi":"10.59170/stattrans-2023-044","DOIUrl":"https://doi.org/10.59170/stattrans-2023-044","url":null,"abstract":"In biomedical research, challenges to working with multiple events are often\u0000 observed while dealing with time-to-event data. Studies on prolonged survival duration\u0000 are prone to having numerous possibilities. In studies on prolonged survival, patients\u0000 might die of other causes. Sometimes in the survival studies, patients experienced some\u0000 events (e.g. cancer relapse) before dying within the study period. In this context, the\u0000 semi-competing risks framework was found useful. Similarly, the prolonged duration of\u0000 follow-up studies is also affected by censored observation, especially interval\u0000 censoring, and right censoring. Some conventional approaches work with time-to-event\u0000 data, like the Cox-proportional hazard model. However, the accelerated failure time\u0000 (AFT) model is more effective than the Cox model because it overcomes the\u0000 proportionality hazard assumption. We also observed covariates impacting the\u0000 time-to-event data measured as the categorical format. No established method currently\u0000 exists for fitting an AFT model that incorporates categorical covariates, multiple\u0000 events, and censored observations simultaneously. This work is dedicated to overcoming\u0000 the existing challenges by the applications of R programming and data illustration. We\u0000 arrived at a conclusion that the developed methods are suitable to run and easy to\u0000 implement in R software. The selection of covariates in the AFT model can be evaluated\u0000 using model selection criteria such as the Deviance Information Criteria (DIC) and\u0000 Log-pseudo marginal likelihood (LPML). Various extensions of the AFT model, such as\u0000 AFT-DPM and AFT-LN, have been demonstrated. The final model was selected based on\u0000 minimum DIC values and larger LPML values.","PeriodicalId":37985,"journal":{"name":"Statistics in Transition","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45306938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rotation schemes and Chebyshev polynomials 旋转格式与Chebyshev多项式

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-035

J. Wesołowski

{"title":"Rotation schemes and Chebyshev polynomials","authors":"J. Wesołowski","doi":"10.59170/stattrans-2023-035","DOIUrl":"https://doi.org/10.59170/stattrans-2023-035","url":null,"abstract":"There is a continuing interplay between mathematics and survey methodology\u0000 involving different branches of mathematics, not only probability. This interplay is\u0000 quite obvious as regards the first of the two options: probability vs. non-probability\u0000 sampling, as proposed and discussed in Kalton (2023). There, mathematics is represented\u0000 by probability and mathematical statistics. However, sometimes connections between\u0000 mathematics and survey methodology are less obvious, yet still crucial and intriguing.\u0000 In this paper we refer to such an unexpected relation, namely between rotation sampling\u0000 and Chebyshev polynomials. This connection, introduced in Kowalski and Wesołowski\u0000 (2015), proved fundamental for the derivation of an explicit form of the recursion for\u0000 the BLUE µˆt of the mean on each occasion t in repeated surveys based on a cascade\u0000 rotation scheme. This general result was obtained under two basic assumptions:\u0000 ASSUMPTION I and ASSUMPTION II, expressed in terms of the Chebyshev polynomials.\u0000 Moreover, in that paper, it was conjectured that these two assumptions are always\u0000 satisfied, so the derived form of recursion is universally valid. In this paper, we\u0000 partially confirm this conjecture by showing that ASSUMPTION I is satisfied for rotation\u0000 patterns with a single gap of an arbitrary size.","PeriodicalId":37985,"journal":{"name":"Statistics in Transition","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42049990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bayesian estimation of a geometric distribution using informative priors based on a Type-I censoring scheme 基于I型截尾方案的基于信息先验的几何分布的贝叶斯估计

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-047

Nadeem Akhtar, S. Khan, Muhammad Amin, Akbar Ali Khan, Amjad Ali, Sadaf Manzoor

引用次数: 0

Estimating the probability of leaving unemployment for older people in Poland using survival models with censored data 使用带有删节数据的生存模型估计波兰老年人失业的可能性

Statistics in Transition Pub Date : 2023-06-13 DOI: 10.59170/stattrans-2023-046

Wioletta Grzenda

{"title":"Estimating the probability of leaving unemployment for older people in Poland using\u0000 survival models with censored data","authors":"Wioletta Grzenda","doi":"10.59170/stattrans-2023-046","DOIUrl":"https://doi.org/10.59170/stattrans-2023-046","url":null,"abstract":"Current demographic changes require greater participation of people aged 50 or\u0000 older in the labour market. Previous research shows that the chances of returning to\u0000 employment decrease with the length of the unemployment period. In the case of older\u0000 people who have not reached the statutory retirement age, these chances also depend on\u0000 the time they have left to retirement. Our study aims to assess the probability of\u0000 leaving unemployment for people aged 50-71 based on their characteristics and the length\u0000 of the unemployment period. We use data from the Labour Force Survey for 2019–2020. The\u0000 key factors determining employment status are identified using the proportional hazard\u0000 model. We take these factors into account and use the direct adjusted survival curve to\u0000 show how the probability of returning to work in Poland changes as people age. Due to\u0000 the fact that not many people take up employment around their retirement age, an\u0000 in-depth evaluation of the accuracy of predictions obtained via the models is crucial to\u0000 assess the results. Hence, in this paper, a time-dependent ROC curve is used. Our\u0000 results indicate that the key factor that influences the return to work after an\u0000 unemployment period in the case of older people in Poland is whether they reached the\u0000 age of 60. Other factors that proved important in this context are the sex and the\u0000 education level of older people.","PeriodicalId":37985,"journal":{"name":"Statistics in Transition","volume":"53 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41292523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0