A key policy question is whether the benefits of additional medical expenditures exceed their costs. We propose a new approach for estimating marginal returns to medical spending based on variation in medical inputs generated by diagnostic thresholds. Specifically, we combine regression discontinuity estimates that compare health outcomes and medical treatment provision for newborns on either s...

retrospective data from sebele dairy farm were analysed for reproductive performance of friesian/holstein cows. three hundred records from 1989 to 1995 were used. the herd was zero grazed and the data was analysed for age at first calving (afc), calf birth weights (bw), calving interval (ci), days open (do), calving rate (cr), reproductive wastage (rw) and calving difficulty (cd); dystocia, aft...

Retrospective data from Sebele Dairy Farm were analysed for reproductive performance of Friesian/Holstein cows. Three hundred records from 1989 to 1995 were used. The herd was zero grazed and the data was analysed for age at first calving (AFC), calf birth weights (BW), calving interval (CI), days open (DO), calving rate (CR), reproductive wastage (RW) and calving difficulty (CD); dystocia, aft...

BACKGROUND Most research examining birth history (i.e. related birth complications) and developmental milestone achievement follow outcomes for infants at-risk with very specific birth weight categories and gestational age classifications. The purpose of this study was to examine how birth weight relates to infants' birth histories and developmental milestone achievement when they fall into a v...

OBJECTIVES This study was conducted to investigate possible factors associated with the recent decrease in birth weight in Kumamoto Prefecture between 1979 and 1997. METHODS Vital statistics on birth between 1979 and 1997 were obtained from the records of the Ministry of Health and Welfare, Japan, on the basis of which, infants were divided into low-birth weight (LBW: <2500 g) group and the n...

low birth weight infants are at risk of many problems. therefore their outcome must evaluate in different ages especially in school age. in this study we determined prevalence of ophthalmic, hearing, speaking and school readiness problems in children who were born low birth weight and compared them with normal birth weight children. in a cross-sectional and retrospective study, all primary scho...

background neonatology has evolved with respect to the needs of premature infants for special care. one of the major problems in premature infants is that their lungs are not developed adequately to fulfill newborns’ needs. there is a broad spectrum of strategies for management of respiratory problems in premature infants. in this study, we aimed to determine the best strategies against respira...

conclusions based on the path analysis model, working condition and socioeconomic status directly and indirectly influence birth weight. thus, as well as attention to treatment and health care (biological aspect), special attention must also be paid to mothers’ socioeconomic factors. results the final path model fitted well (cfi =1, rmsea=0.00) and showed that among direct paths, working condit...

introduction : pregnancy as a stressful event may cause some consequence for both mother and infant such as low birth weight (lbw). lbw is seen in about 7% of pregnancies in iran. it was proved there is a correlation between infants weight and maternal social support. this study was designed to evaluate maternal perceived social support in lbw infants and infants with normal weight. methods and...