The possible consequences of the use of various birthweightfor-gestational age standards in a local population were investigated.Birthweight-for-gestational age standards based on the analysis of 55 387 births occurring to women resident in the area of the Greater Glasgow Health Board (GGHB) between 1975 and 1979 were estimated. The Glasgow based standard was then compared with a number of growth standards reported for other populations, including the widely adopted standards of Thomson et al. (1968). The relative performance of each standard when applied to the Glasgow population was assessed by calculating the sensitivity, specificity and predictive value of the various standards vis-a-vis the distribution of light-for-dates infants defined
Summary. Since 1983 the monitoring of perinatal deaths in Scotland has been incorporated into the established data collection system which monitors maternal and child health in Scotland. This paper describes the transition from a research project to the routine system and the extension of the data collection to include paediatric and pathological findings. This information is provided by local co‐ordinators in active clinical practice. Baseline data are obtained from the routine maternity discharge document (SMR 2). A summary of the findings for the first 4 years of the study, 1977, 1979, 1980 and 1981 is presented, including information about birthweight and gestation‐specific perinatal mortality rates; perinatal mortality rates by time of death in relation to labour and singleton and multiple perinatal mortality rates by the obstetric complication preceding the death.
SUMMARY Data from the Glasgow Register of Congenital Malformations were used to investigate the extent of the recent decline in the prevalence of anencephaly and spina bifida, and the contribution of antenatal screening to it. Over the period inclusive, 303 pregnancies with an anencephalic foetus were diagnosed, representing an "adjusted" prevalence of 1-9 per 1000 total births, of which 179 (59%) were terminated following antenatal screening. There were 364 pregnancies with a spina bifida foetus representing an "adjusted" prevalence of 2-3 per 1000 total births, of which 84 (23%) were terminated. Over the study period, the "adjusted" prevalence of anencephaly fell by 50% while the birth prevalence fell by 89%; the "adjusted" prevalence of spina bifida fell by 38% while the birth prevalence fell by 76%. It was concluded that although the birth prevalence of both defects (particularly anencephaly) would have declined substantially in the absence of screening, the West of Scotland programme should continue.
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