In many situations individuals with the same values for all observed covariables will have important covariables which cannot be measured or which were not measured during the study. These unknown or unmeasured covariables make the subpopulations, as defined by the observable covariables, heterogeneous. The present study explores the affect of unobservable heterogeneity in the context of Weibul...

BACKGROUND Infant mortality is a key indicator of child and population health. The aim of this study is to analyse the trends in infant mortality rates (IMRs) and their components (neonatal mortality rates-NMRs and post-neonatal mortality rates-PNMRs) from 1991 to 2009 both at the national level and across the three Italian large geographical macro-areas (North, Center, South). METHODS Using ...

We provide the first analyses of infant mortality rates by indigenous ethnic group in Finland, a country that has one of the lowest relative numbers of infant deaths in the world. Using files from the Finnish population register, we identified both of the parents of children born in the period from 1975-2003 according to ethnic affiliation, socioeconomic profile, and demographic position. The i...

"The aim of this paper is to analyze empirically the causal relationship, if any, between infant mortality and fertility in thirty-five developing countries." The focus is on possible relationships between the infant mortality rate and the fertility rate. "The hypothesis that infant mortality causes fertility is tested. The possibility of a 'reverse causation' is also analyzed. A one-sided ...

4.1 Achieving low rates of infant and under-five mortality is of central importance for social well-being and human development. Sri Lanka has been extraordinarily successful in reducing its infant and child mortality rates over the last half-century. Indeed, over the period 1946-2000, Sri Lanka has been one of the most successful developing countries in the world in terms of infant and child m...

OBJECTIVES This report presents 1999 period infant mortality statistics from the linked birth/infant death data set (linked file) by a variety of maternal and infant characteristics. METHODS Descriptive tabulations of data are presented. RESULTS In general, mortality rates were lowest for infants born to Chinese and Japanese mothers (2.9 and 3.4 per 1,000, respectively). Infants of Cuban, C...