Association of the modified frailty index with adverse outcomes after penile prosthesis implantation

Objectives: To investigate frailty as a predictor of surgical outcome in elderly patients undergoing penile prosthesis implantation.

Material and methods: A total of 54 elderly patients, above 60 years of age, underwent penile prosthesis implantation between 2012 and 2014. Their data were collected and retrospectively analyzed. A modified frailty index (mFI) was calculated for each patient based on 11 risk factors from the Canadian Study of Health and Aging Frailty Index. The 1-year adverse outcomes were correlated with mFI, patients’ and procedure’s risk factors.

Results: Mean age was 64.9?±?5.2 years. No mortality was reported in our patients, however, one-year adverse outcomes were encountered in 43 (79.6%) patients. Among all studied variables, the 1-year adverse outcomes was not significantly association with mFI, but with preoperative glycosylated hemoglobin A1c (HbA1c) (p?=?0.031) and associated Peyronie’s disease (PD) (p?=?0.000). HbA1c, dyslipidemia, hypertension, PD and duration of the procedure were predictive of infection complications (p?Conclusions: mFI is not a predictive of post-penile prosthesis implantation adverse outcomes in elderly patients with impotence. Degree of diabetic control and association with PD was associated with the 1-year adverse outcomes and infection complications.     

A study of the determinants of environmental disclosure quality: evidence from French listed companies

Journal of Management and Governance - We examine the impact of various factors on the quality of environmental disclosure. Combining multi-theories in a unique framework, it focuses on factors...     

Board size and corporate performance: the missing role of board leadership structure

Different arguments have been introduced in the literature both for and against large and small board sizes. In this context, empirical evidence regarding the impact of board size on corporate performance is less conclusive, which means that further study is needed. Contrary to previous work, it is hypothesized in this study that the relationship between board size and corporate performance is more likely to be confounded by board leadership structure. Econometric analysis provided strong evidence for the applicability of this hypothesis and demonstrated that board size positively affects corporate performance in the presence of CEO non-duality (board leadership structure that is split between the roles of the CEO and the roles of the chairman). Furthermore, board size is shown to have a negative influence on corporate performance in the presence of CEO duality (board leadership structure that assigns the roles of both CEO and chairman to the same person). This conclusion is robust to the use of different measures of corporate performance, control variables and econometric models. Thus, these findings cast doubt on most of the existing evidence that posits that either large or small board size is always the best alternative to be followed in all organizations.     

A Multi‐theory Perspective of Board Leadership Structure: What Does the Egyptian Corporate Governance Context Tell Us?

Much of the existing research in corporate governance has been directed at examining the consequences of board leadership structure on various organizational issues, with little to say about the determinants of this structure. By exploring either agency theory or stewardship theory, researchers provide contested conclusions regarding board leadership structure. The underlying premise of both theories is that ‘one universal structure fits all’. However, the main argument of this paper is that the appropriate board leadership structure varies with some contextual variables and certain actors in a given environment. Econometric analysis demonstrates that board leadership structure varies with firm size, age and ownership structure. The implication of this result is that the assertion of both agency theory (CEO non‐duality structure) and stewardship theory (CEO duality structure) may be valid under certain conditions. Thus, existing theories might need to be treated as complementary viewpoints, each of which draws upon a part of the whole picture, because depending on just one single perspective is more likely to result in misleading conclusions about the structure as a whole.     

Modern Traditionalism: Consanguineous Marriage in Qatar

Consanguineous marriage, or matrimony between biological relatives, is commonplace and on the rise in Qatar, an ethnically heterogeneous Middle Eastern country. Previous studies have demonstrated that modernization often reduces traditional forms of marriage, such as arranged and consanguineous matrimony. Qatar's rapid modernization, however, has coincided with increased rates of endogamy. In this article, the authors examine the social processes that shape normative consanguineous marriage formation and progression in Qatar. On the basis of in‐depth interviews (n = 35) with men and women engaged or married to a cousin, they detail the categorical schemas that lead to consanguineous matrimony: reservation, joking, filtering, engagement, and courtship. In describing these social exchanges, the authors illustrate 2 key features embedded within them: (a) their distinct tempo and (b) how participants frame their experiences using discourses of romantic love. Reflecting larger cultural practices and attitudes in Qatar, the authors found an amalgam of contemporary and conventional that they label modern traditionalism.     

The Image of the City in Modern Arab Painting: Artists Recreate Their Own Cities

The subject of the city in Arab art, as far as I know, has never been studied by art critics and historians. This has apparently not happened because of the strong influence of western modernism and its theories. This article uncovers the importance of the city in early and later modern Arab painting. Examples from the late 1930s and 1940s reflect the less developed cities in terms of their social and structural aspects. This is very obvious in the two paintings by Said (Alexandria, Egyptian) and Nazar (Baghdad, Iraqi). The Arab paintings from the second half of the twentieth century present a different mode of expression as the political and social circumstances of Arab countries are reflected in them. Paintings from this period by Arab artists presenting images of their cities such as those of Haddad and Jabbour (Beirut, Lebanese), Idrees (Jeddah, Saudi), Shammout (Alled, Palestinian), Talib and Al‐Attar (Baghdad, Iraqis), and Alhamzah (Utopia, Jordanian), are very expressive and loaded with meaning. It appears that the relationship between the artist and the city is so intimate, that the artist’s life intersects with the city’s life. The paintings discussed show that the Arab artists’ cities in most cases are not realized as hoped so they tried alternative ones. The artist sees her/himself as a savior by criticizing the state of the beloved city calling for a better one. In this sense the image of the city becomes a representation of the painter’s own artistic reservoir as a form of offerings.     

Behavioural criteria of managerial and leadership effectiveness within Egyptian and British public sector hospitals: an empirical case study and multi-case/cross-nation comparative analysis

This paper reports the results of a study of managerial and leadership effectiveness carried out within an Egyptian public sector hospital in which concrete examples of ‘effective’ and ‘least effective/ineffective’ manager and managerial leader behaviour, as observed by superiors, peers and subordinates, were collected using the critical incident technique. These critical incidents were then content analyzed to identify a smaller number of discrete behavioural statements and criteria of effectiveness. The paper also reports the results of a subsequent comparative analysis of these Egyptian findings against equivalent behavioural criteria that emerged from studies in two different British NHS Trust hospitals. This latter multi-case/cross-nation study revealed high degrees of overlap, commonality, and relative generalization across all three organizations. The results lend strong empirical support to those who believe in ‘generic’ and ‘universalistic’ explanations of the nature of managerial and leadership effectiveness.     

Prediction of tumour pathological subtype from genomic profile using sparse logistic regression with random effects

The purpose of this study is to highlight the application of sparse logistic regression models in dealing with prediction of tumour pathological subtypes based on lung cancer patients'' genomic information. We consider sparse logistic regression models to deal with the high dimensionality and correlation between genomic regions. In a hierarchical likelihood (HL) method, it is assumed that the random effects follow a normal distribution and its variance is assumed to follow a gamma distribution. This formulation considers ridge and lasso penalties as special cases. We extend the HL penalty to include a ridge penalty (called ‘HLnet’) in a similar principle of the elastic net penalty, which is constructed from lasso penalty. The results indicate that the HL penalty creates more sparse estimates than lasso penalty with comparable prediction performance, while HLnet and elastic net penalties have the best prediction performance in real data. We illustrate the methods in a lung cancer study.     

Toward the establishment of a family of distributions that may fit any dataset

This article presents a review and comparison of the most important expanded families of distributions. We set the essential requirements by which an expanding family can fit any dataset successfully. A new method is proposed to construct families, which fulfill these essential requirements. Consequently, two families are suggested, which are more tractable than many other known families and possess very wide range of the indices of skewness and kurtosis. The article is motivated by two applications to real dataset.