住房攀比与居民消费

本文基于CFPS微观跟踪调查数据,从地位寻求角度分析了住房攀比行为对城镇家庭消费的影响。结果表明：①家庭对自身社会地位等级的主观评价与住房面积、消费水平、户主学历等因素呈显著的正相关关系;②住房面积攀比对城镇家庭消费有明显的抑制作用;③社会地位高的家庭的消费行为对其它家庭的示范效应显著,即中国城镇家庭存在向上攀比的地位寻求动机。     

老龄化背景下退休对城镇家庭金融资产选择的影响——基于模糊断点回归设计

随着老龄化程度日益加深,我国退休人口将会呈现增长趋势。本文研究退休作为一种个体工作状态的外生冲击,如何影响家庭的金融资产选择行为。利用中国家庭金融调查微观数据,采用模糊断点回归设计的非参数估计方法,本文发现退休不会造成家庭风险金融资产配置比例发生显著变化,但会引起风险资产种类构成的明显变动,现金、股票和基金在家庭金融资产中所占比重显著下降,银行存款、理财产品和借出款所占比重则显著上升。影响机制检验发现,退休对家庭金融资产选择的这种影响,可能是通过退休之后家庭的风险态度变化、金融知识变化和收入冲击造成的。本文研究表明,对退休人口进行金融知识普及和金融风险教育十分必要。     

Seasonal patterns of fertility measures: theory and data

The distribution of births by month exhibits a seasonal pattern in most populations. The monthly marital fertility rate for an area of Bangladesh provides a good example of the seasonal periodicity. Seasonal patterns of measures of reproduction in a population of married women are considered. Equations are developed that predict the seasonal patterns of these alternative measures under the assumption that the fertility rate (R) follows a trigonometric curve. This is followed by an empirical analysis of the measures in a Bangladesh population that has a pronounced seasonal fertility. The investigation is intended both to validate the theoretical framework developed in the 1st part of the paper as well as to determine whether seasonal variation in actual populations is sufficiently large to affect the alternative measures significantly. 4 measures are considered: pregnancy prevalence (PP)--the proportion of married women who are pregnant at the survey date; mean open birth interval (MOI)--the time from the last live birth to the date of the survey for parous women and from the time of marriage to the date of the survey for nulliparous women; mean closed interval-birth (MCIB)--the mean interval between the last 2 live births for married women who have a birth in the period immediately preceding the survey date; and mean closed interval-woman (MCIW)--the mean interval between the last 2 live births for women who have had at least 2 children by the time of the survey. It is assumed that the seasonal pattern of the fertility rate of a population follows a cosine curve and that there is no trend in annual fertility from year to year. The lag and relative variability of the other measures are considered in comparison with the fertility rate curve. The predictions from this theoretical effort, when compared with observed patterns and trigonometric regression results for each measure in data from Bangladesh, are shown to be quite accurate. The figure and regression results show that R, PP, and MOI have definite seasonal periodicity, but MCIB and MCIW do not display any seasonal patterns. If there is a secular trend in fertility in addition to seasonality, these relationships between the seasonal patterns of the measures may no longer hold. There is a disadvantage to using closed interval measures, for they are unable to detect effects of limiting of childbearing in a population since they are based only on information from women who have births.     

Measuring people's trust

Summary. We measure trust and trustworthiness in British society with a newly designed experiment using real monetary rewards and a sample of the British population. The study also asks the typical survey question that aims to measure trust, showing that it does not predict 'trust' as measured in the experiment. Overall, about 40% of people were willing to trust a stranger in our experiment, and their trust was rewarded half of the time. Analysis of variation in the trust behaviour in our survey suggests that trusting is more likely if people are older, their financial situation is either 'comfortable' or 'difficult' compared with 'doing alright' or 'just getting by', they are a homeowner or they are divorced, separated or never married compared with those who are married or cohabiting. Trustworthiness also is more likely among subjects who are divorced or separated relative to those who are married or cohabiting, and less likely among subjects who perceive their financial situation as 'just getting by' or 'difficult'. We also analyse the effect of attitudes towards risks on trust.     

Parental partnership and joblessness in childhood and their influence on young people's outcomes

Summary.  The paper estimates the relationship between several outcomes in early adulthood (education, inactivity, early birth, distress and smoking) and experiences of life in a single-parent family and with jobless parent(s) during childhood. The analysis is performed using a sample of young adults, who are selected from the first nine waves of the British Household Panel Survey (1991–1999) and can be matched with at least one parent and one sibling over the same period. This sample allows us to estimate the relationship of interest by using sibling differences. We also use another sample of young adults from the British Household Panel Survey, matched to at least one parent, to estimate more conventional level models and to compute nonparametric bounds and point estimates. The estimates based on sibling differences require weaker assumptions (compared with the assumptions that are imposed by nonparametric estimators under conditional independence and level estimators) for the identification of the effects of family structure and parental joblessness on the outcomes under analysis. We find that experiences of life in a single-parent family and with jobless parents during childhood are usually associated with disadvantageous outcomes for young adults, the effect of family structure is in general significantly greater (in absolute value) than the effect of parental worklessness and most of the unfavourable outcomes are linked to an early family disruption, when the child was aged 0–5 years, whereas the timing of parental joblessness during childhood has more complex effects, with different outcomes being more strongly influenced by parental worklessness at different ages of the child.     

中国居民家庭的主观贫困感受研究

主观贫困包含着大量客观贫困无法体现的信息，是客观贫困测度的一种有效补充。本文提出了一种基于半参数广义可加模型的主观贫困效应的测度方法，利用中国社会状况综合调查（CSS）的微观调研数据，对影响我国居民主观贫困感受的决定因素以及主、客观贫困间的关系进行了实证研究。首先，按照CSS数据中居民对自身经济地位的自我评价，将居民划定为主观贫困和非主观贫困两种状态；其次，为了更加灵活的捕捉连续变量的影响，利用所提方法对影响主观贫困的因素进行了计量分析，并对主、客观贫困测度间的关系进行了分析。研究发现，居民主观上的贫困感受不仅受到家庭收入水平的影响，家庭规模、人口结构、教育水平、资产积累、医疗支出、家庭遭遇困境事件、居住位置等因素均会显著改变主观贫困发生的概率。因而居民主观贫困的脱离不仅依赖于经济条件的改善，教育、医疗保障等公共服务水平的提升、居民生活环境的改善、从政策上提高贫困人口应对困境的能力都对提升居民安全感和获得感具有重要的影响。     

Split Questionnaire Designs: collecting only the data that you need through MCAR and MAR designs

We call a sample design that allows for different patterns, or sets, of data items to be collected from different sample units a Split Questionnaire Design (SQD). SQDs can be thought of as incorporating missing data into survey design. This paper examines the situation where data that are not collected by an SQD can be treated as Missing Completely At Random or Missing At Random, targets are regression coefficients in a generalised linear model fitted to binary variables, and targets are estimated using Maximum Likelihood. A key finding is that it can be easy to measure the relative contribution of a respondent to the accuracy of estimated model parameters before collecting all the respondent's model covariates. We show empirically and theoretically that we could achieve a significant reduction in respondent burden with a negligible impact on the accuracy of estimates by not collecting model covariates from respondents who we identify as contributing little to the accuracy of estimates. We discuss the general implications for SQDs.     

Level and change of group-focused enmity in Germany: unconditional and conditional latent growth curve models with four panel waves

In this study, we investigate and explain the level and change of six elements of group-focused enmity (GFE; see Zick et al. in J. Soc. Issues 64(2):363–383, 2008) in Germany between 2002 and 2006: racism, xenophobia, anti-Semitism, homophobia, exclusion of homeless people and support for rights of the established. For the data analysis, a representative 4-year panel study of the adult non-immigrant German population collected during the years 2002–2006 is used, and the development of each GFE component is tested by using an unconditional second-order latent growth curve model (LGM) (with full information maximum likelihood, FIML). We find that the level of 5 of the 6 components (racism, xenophobia, anti-Semitism, homophobia, exclusion of homeless people) displays an increase at the beginning of the observed period followed by a decrease. However, the sixth aspect, rights of the established, displays a continuous linear increase over time. The different developmental pattern stands in contrast to Allport’s (The nature of prejudice. Perseus Books, Cambridge, 1954) hypothesis for the strong link between the components and their development over time. We try to explain this different developmental pattern by several sociodemographic characteristics. This is performed by using a conditional second-order latent growth curve model.     

A bayesian comparison of randomized and voluntary response sampling models

This paper is concerned with making a Bayesian comparison between the two types of survey sampling procedures where the individuals are asked sensitive questions. The randomized response procedure is designed to obtain information in such a way that the respondent is protected against revealing his/her status about the sensitive issue. In voluntary response model each individual chooses either to respond or not to respond. It is assumed that the respondents do not falsify their answers. The problem of interest is to estimate the proportion of the sampled population who belong to the sensitive group. A beta prior distribution is used for the proportion of interest. The loss function is taken to be the quadratic loss function.     

AN ADAPTIVE TRIMMED LIKELIHOOD ALGORITHM FOR IDENTIFICATION OF MULTIVARIATE OUTLIERS

This article describes an algorithm for the identification of outliers in multivariate data based on the asymptotic theory for location estimation as described typically for the trimmed likelihood estimator and in particular for the minimum covariance determinant estimator. The strategy is to choose a subset of the data which minimizes an appropriate measure of the asymptotic variance of the multivariate location estimator. Observations not belonging to this subset are considered potential outliers which should be trimmed. For α less than about 0.5, the correct trimming proportion is taken to be that α > 0 for which the minimum of any minima of this measure of the asymptotic variance occurs. If no minima occur for an α > 0 then the data set will be considered outlier free.     

FAMILY BUILDING DIFFERENCES BETWEEN SAME SEX AND MIXED SEX FAMILIES IN AUSTRALIA

From this investigation it seems that an aversion among some couples to a same sex family has some relevance in family building. However, although there are significant differences in the proportions of same sex and mixed sex families having an additional child, the overall effect on average family size of the (apparent) attempt to achieve a child of each sex appears to be slight—an increase of less than 3% in the case of the Melbourne data. Despite the evidence that a significantly greater proportion of women with same sex families have another child, relatively few women admit that the sex structure of the children was the main factor in such a decision. Another insight into the relationship between sex structure and family building was that the desire for a child of each sex may have a negative effect on fertility in that couples who have already achieved such a configuration may decide not to have an additional child that they had originally planned to have. Obviously, it is difficult to separate attitudes to the importance of having both sons and daughters from rationalisations associated with the sex structure of the respondent's own family. Nevertheless the desire for children of each sex seems to be related to traditional attitudes to woman's role, Southern European background, an earlier year of birth, and a lower level of education. However, at the same time women in these categories, particularly the last, seem to be relatively less likely to exhibit behaviour indicative of a controlled response to the sex structure of the family; thus among such groups the probability of same sex families having another child is found to be relatively similar to the proportion of mixed sex families having another child. In other words, they are less likely than other women, who care less about having both sons and daughters, to stop at two (or three) children when at least one son and one daughter have been attained. What of the future relationship between proportions of same sex and mixed sex families having another child? Although it would seem that the combined effect of better educational opportunities and less traditional attitudes of each new generation would further reduce the importance attached to having both sons and daughters, at the same time one would expect an increase in a couple's ability to stop family building when two or three children of the desired sex structure had been achieved. Another factor is that possibly an increasing preference for smaller families will outweigh the wish to have a third (or fourth) child to achieve one child of each sex or for any other reason.     

An individual measure of relative survival

Summary.  Relative survival techniques are used to compare survival experience in a study cohort with that expected if background population rates apply. The techniques are especially useful when cause-specific death information is not accurate or not available as they provide a measure of excess mortality in a group of patients with a certain disease. Whereas these methods are based on group comparisons, we present here a transformation approach which instead gives for each individual an outcome measure relative to the appropriate background population. The new outcome measure is easily interpreted and can be analysed by using standard survival analysis techniques. It provides additional information on relative survival and gives new options in regression analysis. For example, one can estimate the proportion of patients who survived longer than a given percentile of the respective general population or compare survival experience of individuals while accounting for the population differences. The regression models for the new outcome measure are different from existing models, thus providing new possibilities in analysing relative survival data. One distinctive feature of our approach is that we adjust for expected survival before modelling. The paper is motivated by a study into the survival of patients after acute myocardial infarction.     

Charting the development of emotion recognition from 6 years of age

Recognition of emotions within others is a necessary life skill. We know that this is a learnt skill, which develops throughout childhood and is deficient in some individuals. To put individual development in context, it is necessary to understand the nature of development amongst the normal population. Age-related centiles can be used to add this context. The level of emotion recognition is assessed using an ordinal outcome scale, and hence establishing age-related centiles for these measures creates particular analytical problems. In this paper, we use methodology previously developed by us for monitoring the development of visual acuity during childhood to calculate age-related centiles for emotion recognition ratings. The ratings do not consistently improve with age and appear to be affected by hormonal developments. A comparison of ability to rate emotions according to the stage of pubertal development is used to illustrate how the conversion of ordinal assessments to continuous centile scores facilitates the investigation. The specific issues relating to the application of the methodology to data that are not consistent in the direction of change with age and where large amounts of data can be gathered electronically are discussed.     

The National Wilms Tumor Study: a 40 year perspective

The National Wilms Tumor Study (NWTS) was the first pediatric intergroup clinical research unit in North America. It was thus able to collect data concerning children with malignant kidney tumors from each of the then-extant childhood cancer cooperative study groups. Enough patients—about 350 per year—could thus be gathered to study the nature and clinical characteristics of the various kidney malignant tumors of childhood. It also enabled randomized trials of comparative treatment regimens, patients stratified following stipulated risk criteria. The result has been a steadily increasing two-year survival rate to the 90% level while at the same time modulating the intensity of therapy according to well-defined needs. For example, routine post-operative radiation therapy, damaging to normal as well as neoplastic tissues, has been largely eliminated. The proportion of patients given doxorubicin, a cardiotoxic drug, also has been curtailed. These two therapies are now restricted to the 30% of patients who have more advanced or more aggressive disease. All this has been driven to meet the challenge inherent in the motto of pediatric oncology: “Cure is not enough”; that is, the cured child of to-day must not become the chronically ill adult of tomorrow, suffering from the delayed complications secondary to unnecessary, toxic therapies.     

An approximation to percentiles of a variable of the bivariate normal distribution when the other variable is truncated,with applications

A Cornish-Fisher expansion is used to approximate the per-centiles of a variable of the bivariate normal distribution when the other variable is truncated. The expression is in terms of the bivariate cumulants of a singly truncated bivariate normal distribution. The percentiles are useful in the problem of personnel selection where we use a screening variable to screen applicants for employment and a correlated performance variable to screen employees for rehiring. This paper provides a bivariate cumulants table for determining the cutoff score of the performance variable. The following two problems are also con¬sidered: (1) determine the proportion of applicants who would have been successful had no screening been applied, and (2) determine the proportion of individuals being rejected byscreening who would have been successful had they been hired, The variable that is used to measure job performance and the variable that measures the outcome of an aptitude test are assumed to be jointly normally distributed with correlation ρ     

Estimation and prediction in the presence of an outlier under Type-II censoring

A single-outlier data set containing some independent random variables is considered such that all of observations expect one have the same distribution. To describe the model of interested, a location-scale family of distributions is used and the estimation problem of the parameters is studied when the data are collected under Type-II censoring scheme. Moreover, three different predictors are presented to predict the censored order statistics. They are also compared regarding both of mean squared prediction error and Pitman's measure of closeness criteria. The role of outlier parameter as well as censorship rate is studied on performance of proposed estimator and predictors. The results of the paper are illustrated via a real data set. Finally, some conclusions are stated.     

中国居民资本要素收入有多少?

资本要素收入作为国民总收入中的重要组成部分,测算、厘清其在政府、企业和住户之间的分配状况以及居民资本要素收入的结构是必要的基础性工作。利用资金流量表和统计局住户调查数据,对我国资本要素收入及其部门分配和居民资本要素收入的结构进行测算,研究发现:(1)居民资本要素收入长期以来高速增长,在国民总收入中所占比例基本稳定在10%左右,但在总资本要素收入中所占比重经历了先上升(20世纪90年代)后下降(21世纪初)的过程;(2)居民税前、税后资本要素收入对比反映出我国对居民资本要素收入征税力度尚小,最高不超过4%;(3)伴随改革和经济社会发展,我国居民资本要素收入结构由改革开放初期主要以农村居民的经营性收入为主转变为经营性、财产性收入并驾齐驱;(4)宏、微观口径测算的结果存在一定缺口,主要由劳动者报酬存在低估以及住户数据的系统性误差导致形成,国民经济核算的完善应得到关注。     

Impact of measurement errors on the performance and distributional properties of the multivariate capability index $$\mathbf{NMC }_\mathbf{pm }$$

Current industrial processes are sophisticated enough to be tied to only one quality variable to describe the process result. Instead, many process variables need to be analyze together to assess the process performance. In particular, multivariate process capability analysis (MPCIs) has been the focus of study during the last few decades, during which many authors proposed alternatives to build the indices. These measures are extremely attractive to people in charge of industrial processes, because they provide a single measure that summarizes the whole process performance regarding its specifications. In most practical applications, these indices are estimated from sampling information collected by measuring the variables of interest on the process outcome. This activity introduces an additional source of variation to data, that needs to be considered, regarding its effect on the properties of the indices. Unfortunately, this problem has received scarce attention, at least in the multivariate domain. In this paper, we study how the presence of measurement errors affects the properties of one of the MPCIs recommended in previous researches. The results indicate that even little measurement errors can induce distortions on the index value, leading to wrong conclusions about the process performance.     

Can the Growth of Mega-Journals Affect Authors' Choice of Journal?

The growth of mega-journals has also brought about changes in authorship. This study uses collected data to identify the transitions of mega-journal publishing and changes of authorship. For authors interested in publishing in mega-journals, the publication of South Korean authors in these mega-journals is specifically sampled and checked, revealing that mega-journals are increasingly the targets for publication. Some mega-journals have an impact factor even if they have only been publishing for 5–10 years. Ten out of 12 SCIE mega-journals collected in this study show a high impact factor, which is above average. Furthermore, the number of articles published by South Korean authors in major mega-journals is also on the rise. The result of this study will be useful for mega-journal editors, who are keen to know what factors influence author choice of journals, and for those who attempt to predict what impact mega-journals will have on scholarly journal publishing in the future.     

Simultaneous confidence interval construction for many-to-one comparisons of proportion differences based on correlated paired data

In some medical researches such as ophthalmological, orthopaedic and otolaryngologic studies, it is often of interest to compare multiple groups with a control using data collected from paired organs of patients. The major difficulty in performing the data analysis is to adjust the multiplicity between the comparison of multiple groups, and the correlation within the same patient''s paired organs. In this article, we construct asymptotic simultaneous confidence intervals (SCIs) for many-to-one comparisons of proportion differences adjusting for multiplicity and the correlation. The coverage probabilities and widths of the proposed CIs are evaluated by Monte Carlo simulation studies. The methods are illustrated by a real data example.