Monte carlo evidence on the robustness of conditional moment tests in tobit and probit models

This paper numerically examines the size robustness of various conditional moment tests in misspecified tobit and probit models. The misspecifications considered include the incorrect exclusion of regressors, ignored heteroskedasticity and false distributional assumptions. An important feature of the experimental design is that it is based on an existing empirical study and is more realistic than many simulation studies. The tests are seen to have mixed performance depending on both the original null hypothesis being tested and type of misspecification encountered.     

Simple inference in multinomial and ordered logit

This paper provides some simple methods of interpreting the coefficients in multinomial logit and ordered logit models. These methods are summarized in Propositions concerning the magnitudes, signs, and patterns of partial derivatives of the outcome probabilities with respect to the exogenousvariables. The paper also provides an empirical example illustrating the use of these Propositions.     

A retrospective comparison of water birth and conventional vaginal birth among women deemed to be low risk in a secondary level hospital in Australia

BackgroundWater birth involves the complete birth of the baby under warm water. There is a lack of consensus regarding the safety of water birth.AimThis study aimed to describe the maternal and neonatal outcomes associated with water birth among labouring women deemed at low risk for obstetric complications and compare these outcomes against women of similar risk who had a standard land birth.MethodA retrospective audit and comparison of women giving birth in water with a matched cohort who birthed on land at Bankstown hospital over a 10 year period (2000–2009).ResultsIn total 438 childbearing women were selected for this study (N = 219 in each arm). Primigravida women represented 42% of the study population. There was no significant difference in mean duration of both first and second stages of labour or postpartum blood loss between the two birth groups. There were no episiotomies performed in the water birth arm which was significantly different to the comparison group (N = 33, p < 0.001). There were more babies in the water birth group with an Apgar score of 7 or less at 1 min (compared to land births). However, at 5 min there was no difference in Apgar scores between the groups. Three of eight special care nursery admissions in the water birth group were related to feeding difficulties.ConclusionThis is the largest study on water birth in an Australian setting. Despite the limitations of a retrospective audit the findings make a contribution to the growing body of knowledge on water birth.     

Simple inference in multinomial and ordered logit

This paper provides some simple methods of interpreting the coefficients in multinomial logit and ordered logit models. These methods are summarized in Propositions concerning the magnitudes, signs, and patterns of partial derivatives of the outcome probabilities with respect to the exogenousvariables. The paper also provides an empirical example illustrating the use of these Propositions.     

PRODUCTIVITY EFFECTS OF PUBLIC CAPITAL MAINTENANCE: EVIDENCE FROM U.S. STATES

This article assesses the productivity effects of infrastructure operation and maintenance (O&M) spending by state and local governments in the 48 contiguous U.S. states over the period 1978–2000. We explicitly account for transboundary spillovers of capital and O&M spending and follow a semiparametric methodology that allows us to estimate state‐specific output elasticities. We find strong evidence that in all 48 states the cross‐state spillover effects of O&M outlays on productivity exceed their within‐state impacts and are substantially higher than the spillover effects of capital expenditure. (JEL C14, E22, E62, H76, O11, O47, R11)     

THE EXPANSION OF COLLEGE EDUCATION IN THE UNITED STATES: IS THERE EVIDENCE OF DECLINING COHORT QUALITY?

This article documents the expansion of college education in the United States and examines to what extent the increase in the number of college graduates may have lead to a decline in the average quality of college graduates. Using the 1940–90 Census, we compare across birth year cohorts with varying levels of college completion. We find some weak evidence that college graduate men from highly educated cohorts earn a relatively smaller wage premium even controlling for the relative supply effect. However, these cohort quality effects account for only a small fraction of the recent fluctuation in the college wage premium.(JEL I20 , J24 , J31 )     

QUALITY ISSUES IN TELEPHONE SURVEYS: COVERAGE, NON-RESPONSE and QUOTA SAMPLING

The quality of a telephone survey is affected by several factors: telephone coverage, non-response, the methods used to select households and persons, and the quality of responses obtained from respondents. Data are provided which show that a large proportion of Australian households have telephone connections. However, telephone coverage is not uniform and some subgroups of the population have much lower connection rates. This paper reviews evidence of the effect of non-response and the effectiveness of repeated call backs, and reports the results of a new study. The use of quota sampling to select respondents from randomly selected households is also examined. The results suggest that telephone surveys under-represent older persons and the unemployed, and over-represent middle-aged persons. It is shown that while call backs can increase the response rate, the effect on the composition of the sample and resulting estimates is minimal. The main effects are due to refusals and variation in coverage rates.     

Macroeconomic Conditions and the Distribution of Income in Spain

Abstract. This paper analyses the impact of changes in macroeconomic con ditions on the income distribution in Spain. Using household data from the Encuesta Continuada de Presupuestos Familiares (ECPF) from 1985 to 1996 we disentangle the effect of aggregate variables on the income distribution by estimating counterfactual densities conditional on different macroeconomic scenarios. In estimation, we use a semi‐parametric least squares procedure that allows a flexible interaction between the level of income and a first index of individual characteristics and a second index that captures the role of macroeconomic variables. We find that although inequality displays a decreasing trend over the earlier part of the period examined, the poor performance of the Spanish economy during the early 1990s appears to have reversed this trend. We also conclude that while inflation appears to have no impact on the distribution of income for the period examined, there were important redistributive roles for unemployment, government expenditure, and the level of GDP.     

Long-Term Care of Older Adults in Malta: Influencing Factors and Their Social Impacts Amid The International Financial Crisis

ABSTRACT

This article explores recent changes in long-term care (LTC) for older persons in Malta, resulting from restructuring or other contextual factors related to the international financial crisis. The ageing population continues to grow, while traditional ways of providing care for the ageing population are progressively dwindling. Waiting lists for residential care have grown longer, although public-private partnerships have served to shorten these lists to some degree. Community care services are not keeping pace with need, and the frail elderly wishing to remain in their own homes often cannot do so without significant assistance from other sources.

Service recipients fall into four groups: those affording private residential care; those granted a government-subsidized residential bed; those cared for at home by relatives; and those similarly cared for by nonfamily live-in caregivers with (or without) input from family members. Existent data are reviewed and analyzed along with a focus group of 30 stakeholders to explore this topic further. Future recommendations are made and consequences are explored as caregiving options move away from the responsibility of the traditional family system toward greater pressure on state-provided care, use of expensive private care, and waiting lists to secure services.