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71.
Modeling of count responses is widely performed via Poisson regression models. This paper covers the problem of variable selection in Poisson regression analysis. The basic emphasis of this paper is to present the usefulness of information complexity-based criteria for Poisson regression. Particle swarm optimization (PSO) algorithm was adopted to minimize the information criteria. A real dataset example and two simulation studies were conducted for highly collinear and lowly correlated datasets. Results demonstrate the capability of information complexity-type criteria. According to the results, information complexity-type criteria can be effectively used instead of classical criteria in count data modeling via the PSO algorithm. 相似文献
72.
Objective: To determine whether radical prostatetomy (RP) is suitable for prostate cancer patients with age ≥75 years in comparison to primary androgen deprivation therapy (PADT).Patients and methods: A cohort study was conducted in clinically localized prostate cancer patients with ≥75 years of age who underwent RP or PADT at six institutions from 2005 to 2013. Patients who had less than 12 months of follow-up, or received neoadjuvant or adjuvant therapy were excluded. We compared clinical characteristics, cancer-specific and overall survivals, and post-treatment complication rates between two groups.Results: We included 92 and 99 patients in the RP and PADT groups, respectively. In survival analyses, there were no significant differences in cancer-specific and overall survivals (p?=?.302 and .995, respectively). The incidence of serious adverse events (cardio- or cerebrovascular event, or bone fracture) was higher in the PADT group (p?=?.001). Multivariable analysis showed that PADT had a worse effect on the serious adverse events (OR 10.12, p?=?.038).Conclusions: In selected elderly patients, RP was safe and effective for treatment of localized prostate cancer, as compared to PADT. Surgical treatment options should be considered in elderly patients with respect to life expectancy, rather than chronological age. 相似文献
73.
In accordance with the increasing demand for information, indices are created and national and global rankings made to represent and through which to understand and build policy related to complex situations, processes and trajectories. Different indices for a single concept are also created that have advantages or disadvantages over one another or to overcome certain calculation problems. As one such, the Human Development Index (HDI) presently lists countries according to four different criteria, and remains at the heart of democratic and humanitarian recovery efforts. This type of indicator is taken as a function of past performances, with high performances being the extreme values at positively skewed distributions. Thus, the variability of each unit’s repeated measures is regarded as the result of efforts made between the measurement time points (in the HDI case, of a country to promote development). However, it is assumed that the variability of the units is not homogenous. Here, it is shown that in the HDI case, high performance units show relatively low variability, whereas the middle and middle-low performance units show a high variability. Cluster analysis and Friedman test have been used to determine the characteristics of ordered country rankings. The variability of rank-order should also be taken into account besides the location on the list by clustering the countries according to HDI. 相似文献
74.
We develop a theory of representation of interdependent preferences that reflect the widely acknowledged phenomenon of keeping up with the Joneses (i.e. of those preferences which maintain that well-being depend on “relative standing” in the society as well as on material
consumption). The principal ingredient of our analysis is the assumption that individuals desire to occupy a (subjectively)
better position than their peers. This is quite a primitive starting point in that it does not give any reference to what
is actually regarded as “status” in the society. We call this basic postulate negative interdependence, and study its implications. In particular, combining this assumption with some other basic postulates that are widely used
in a number of other branches of the theory of individual choice, we axiomatize the relative income hypothesis, and obtain
an operational representation of interdependent preferences.
Received: 7 December 1998/Accepted: 24 August 1999 相似文献
75.
Feng-Shou Ko 《统计学通讯:理论与方法》2017,46(24):12336-12344
In this article, we evaluate the relative cost of a targeted design to an untargeted design for a randomized clinical trial comparing a new treatment to a control. We observed that when the ratio of screen cost per person and drug cost per person is very small, say 0.008, the trial cost for conducting a targeted design might be fewer than that for conducting an untargeted design. When the difference between the treatment effect for the targeted patients and the treatment effect for the untargeted patients is increased, the savings in trial cost for the targeted design would be increased significantly. The greater sensitivity and specificity for the screen tool will lead to greater savings in trial cost for the targeted design. The relative cost of a targeted design to an untargeted design is associated with the treatment effect difference between targeted and untargeted patients, the proportion of targeted patients in the population, the screen tool performance, and the ratio of drug cost per person and screen cost per person. 相似文献
76.
77.
高奈延 《南开学报(哲学社会科学版)》2008,(5)
金圣叹评点的<西厢记>、<水浒传>18世纪传到朝鲜,到19世纪已非常流行.朝鲜文人以极大兴趣介绍金氏的生平行迹,评论他的著作和文学批评思想.尽管文人们对金圣叹其人褒贬不一,有的视金批之书为祸害,有人将金氏文学与周礼、汉赋、唐诗、宋文相比肩.但朝鲜文人一致认为金圣叹是奇人,金氏文章为奇文.因此,金批小说曾影响朝鲜文人的文体和文风.金圣叹的文学批评思想对朝鲜的文学批评也产生过潜移默化的影响.在朝鲜著名小说<广寒楼记>的批语中,从体例、内容到方法都参考了金批. 相似文献
78.
Andrew L. Luk Bessie P. S. Chan Selwyne W. Cheong Stanley K. K. Ko 《Social indicators research》2010,95(3):489-502
To explore the burnout situation of teachers in two schools in Macau and to investigate any differences made of demographic
characteristics. The relation of burnout on social problem solving and holistic health of teachers is also studied. A self
reported questionnaire with the Chinese Maslach Burnout Inventory (C-MBI), Chinese Social Problem Solving Inventory (C-SPSI)
and the Body-Mind-Spirit Well-Being Inventory (BMSWBI) were used. Totally 138 teachers participated in the study. With Hong
Kong data as a reference, Macau teachers scored in the average range of burnout in emotional exhaustion and depersonalization
but scored in the low range of burnout in personal accomplishment. Significance differences were found in some dimensions
of burnout in age, marital status, teaching experiences, education background and satisfaction with income. Both C-SPSI and
BMSWBI were found to be significantly negative correlated with emotional exhaustion and depersonalization and positive correlated
with personal achievement. The findings identified those with greater degree of burnout, to whom more attention should be
paid. The study also contributed to the limited literature on the quality of life of teachers in Macau. Finally, the findings
added on the data base for comparison internationally among the Chinese population. 相似文献
79.
Shih-Yi Wen Yi-Li Ko Hei-Jen Jou Li-Yin Chien 《Women and birth : journal of the Australian College of Midwives》2018,31(6):e367-e373
Background
Poor sleep quality is related to old age among the general population, but few studies have focused on postpartum women of advanced maternal age. The present study aimed to describe and compare sleep quality between women younger or older than 35 years of age at 3 months postpartum, and to examine the related factors.Methods
A cross-sectional survey was conducted with 160 postpartum women who had given birth at a teaching hospital in Taiwan. The participants were assigned to two groups according to age (≥35 years, n = 80; and 20–34 years, n = 80). Sleep quality was measured using the Pittsburgh Sleep Quality Index with a cut-off score of 5.Results
The prevalence of poor sleep quality at 3 months postpartum was higher in older mothers (61.6%) than in younger mothers (38.4%, p < 0.01). Multiple logistic regression revealed that poor sleep quality was positively correlated with the severity of postpartum physical symptoms, lack of exercise, and room-sharing with infants. After adjustment for those variables, older mothers were three times more likely to have poor sleep quality than younger mothers (odds ratio = 3.08; 95% confidence interval 1.52–6.23).Conclusion
Health care providers should pay attention to sleep problems among postpartum women, especially mothers of advanced maternal age. In particular, health care providers should evaluate sleep quality among postpartum women, instruct them not to share the bed with their infants at night, perform exercise, and manage their postpartum physical symptoms to improve the sleep quality. 相似文献80.
Ming-Chen Ko Long-Shan Wu Sangwoo Lee Chien-Chun Wang Po-Fu Lee Ching-Yu Tseng Chien-Chang Ho 《European review of aging and physical activity》2017,14(1):11