Validation of a mobility item bank for older patients in primary care

Background: To develop and validate an item bank to measure mobility in older people in primary care and to analyse differential item functioning (DIF) and differential bundle functioning (DBF) by sex. Methods: A pool of 48 mobility items was administered by interview to 593 older people attending primary health care practices. The pool contained four domains based on the International Classification of Functioning: changing and maintaining body position, carrying, lifting and pushing, walking and going up and down stairs. Results: The Late Life Mobility item bank consisted of 35 items, and measured with a reliability of 0.90 or more across the full spectrum of mobility, except at the higher end of better functioning. No evidence was found of non-uniform DIF but uniform DIF was observed, mainly for items in the changing and maintaining body position and carrying, lifting and pushing domains. The walking domain did not display DBF, but the other three domains did, principally the carrying, lifting and pushing items. Conclusions: During the design and validation of an item bank to measure mobility in older people, we found that strength (carrying, lifting and pushing) items formed a secondary dimension that produced DBF. More research is needed to determine how best to include strength items in a mobility measure, or whether it would be more appropriate to design separate measures for each construct.

Nonlinear dynamics in discretionary accruals: An analysis of bank loan-loss provisions

Several studies have analyzed discretionary accruals to address earnings-smoothing behaviors in the banking industry. We argue that the characteristic link between accruals and earnings may be nonlinear, since both the incentives to manipulate income and the practical way to do so depend partially on the relative size of earnings. Given a sample of 15,268 US banks over the period 1996–2011, the main results in this paper suggest that, depending on the size of earnings, bank managers tend to engage in earnings-decreasing strategies when earnings are negative (“big-bath”), use earnings-increasing strategies when earnings are positive, and use provisions as a smoothing device when earnings are positive and substantial (“cookie-jar” accounting). This evidence, which cannot be explained by the earnings-smoothing hypothesis, is consistent with the compensation theory. Neglecting nonlinear patterns in the econometric modeling of these accruals may lead to misleading conclusions regarding the characteristic strategies used in earnings management.

El papel del Banco de España en el hundimiento de las Cajas de Ahorro españolas

En la última década, la organización del sistema financiero español ha tenido una convulsión de un alcance inimaginable y puede decirse sin ningún género de dudas que el cambio ha sido histórico. De un sistema en el que el reparto de las instituciones financieras estaba representado por las Cajas de Ahorro y la banca en un 50% por cada grupo, se ha pasado a un escenario en el que las Cajas de Ahorro han desaparecido casi en su totalidad y la banca ha ocupado completamente todo el sistema financiero español. Difícilmente se puede explicar este cambio por factores exclusivamente atribuibles a unas u otras instituciones ya que, en buena lógica, una crisis económica afecta con distinta intensidad a cada una de las empresas y, por lo tanto, hubiese cabido esperar que el mantenimiento de algunas cajas de ahorros ante el embate de la crisis hubiese significado que quedasen algunas en funcionamiento. Pero ¿todas? También hubiera cabido esperar que la crisis hubiera afectado a más bancos, pero ¿tan pocos? ¿Tan bien estaban o sabían más que las demás entidades financieras? En esta comunicación vamos a tratar de analizar el comportamiento del Banco de España en este proceso y ver hasta qué punto sus decisiones o falta de decisiones han contribuido a profundizar en la crisis económica y en el hundimiento de todo el sector de cajas de ahorro españolas.