birth and death indicators were examined through retrospective surveys conducted in 1985 and 1987 in the islamic republic of lran, reviewing 1984 and 1986 events, to obtain infant mortality rate (imr) and other necessary indicators for health planning and evaluation. comparison between 1985 and 1987 surveys revealed: 1. no major change in crude death rate ( 6.3 per 1000 in 1987 survey) had occu...

background avoidable mortality as an indicator for assessing the health system performance has caught the attention of researchers for a long time. in this study we aimed to compare the health system performance using this indicator in rural and urban areas of one of iran’s southern provinces.   methods all deaths (29916) which happened during 2004–2011 in bushehr province were assessed. nolte ...

Diversification rates inferred from phylogenies are not identifiable if the allowed to vary freely over time. There infinitely many combinations of speciation and extinction rate functions that have exact same likelihood score for a given phylogeny, building congruence class. The specific shape characteristics such classes yet been studied. Whether within class share common features is also kno...