Articles: mortality.
-
The author tests McKeown's hypothesis that socioeconomic improvement was the most important cause of mortality decline in England and Wales. First, McKeown's basic work is replicated using data on childhood mortality in Rhode Island between 1860 and 1970. "Then the effect of socioeconomic change on mortality change is examined in ways that differentiate it from other effects. Next, socioeconomic and public health effects on disease are differentiated by computing case-fatality and incidence rates." The results provide support for McKeown's argument.
-
Perinatal epidemiologists no longer speak much of "prematurity". Instead the World Health Organization recommends that infants born before 37 completed weeks of gestation should be designated "preterm" and those of birthweight less than 2500 g "low birthweight". Both definitions have obvious drawbacks--the former because menstrual dates are often unknown or unreliable, the latter because it does not separate preterm from small-for-gestational-age infants. Whatever the classification of these small infants there is no dispute about their high mortality and morbidity; in the United Kingdom they account for over two-thirds of first-week deaths.
-
The outcome of pregnancy of all women belonging to the study population of the Machakos project studies who delivered during 1975 and 1976 is presented. The birth-rate was 43.0 per 1,000 population per year, the fertility rate was 235 per 1,000 women 15--44 years of age per year. Unexpected low mortality rates were found; stillbirths, neonatal and infant death rates were respectively 29.8 per 1,000 total births and 22.5 and 50.0 per 1,000 live births. ⋯ Parity, marital status, birth-interval and maternal height were not associated with a difference in outcome of pregnancy. The stillbirth rate among the children born in hospital (26.4%) was 4.4% compared with 2.4% among the children born at home, neonatal and infant death rates were the same. Half of all perinatal deaths were caused by either prematurity or birth trauma, 75% of all infant deaths after the first week of life were caused by infections.
-
The protective value of legislation for compulsory wearing of seat belts has been supported by Australian and overseas experience. An evaluation of changes during the period from 1957 to 1977 in the incidence of road crash fatalities for male and female vehicle occupants in Victoria and the rest of Australia (that is, in Australia minus Victoria) is presented. ⋯ There has been virtually no reduction in road crash fatalities for passengers less than 17 years of age. Hypotheses are advanced to explain these findings and further countermeasures are suggested.