{'fraction_non_alphanumeric': 0.034385569334836524, 'fraction_numerical': 0.05693348365276212, 'mean_word_length': 4.4447852760736195, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Trends in perinatal mortality.


 In 1973, Austria, Cuba, England and Wales, Hungary, Japan, New Zealand, Sweden and the U.S. collaborated with the World Health Organization (WHO) to produce a report on the impact of social and biological factors on perinatal mortality. This article explores trends in perinatal mortality in each of the 8 participating countries in the years after the study was done; data were supplied by WHO for the years 1968-78. Perinatal mortality in 1973 ranged between 14/1000 in Sweden to 33/1000 in Hungary. At that time perinatal mortality was already decreasing in most countries, and kept decreasing at least until 1978. Austria is the country which recorded the greatest reduction, from 26/1000 in 1973 to 15/1000 in 1978, or a reduction of 43%. To summarize, between 1973 and 1978 all countries showed decreases going from 24% in Cuba to 43% in Austria. Between 1970-73 and in 1978 the greatest reductions in late fetal death were recorded in Japan (39%) and in Sweden (36%); the lowest in Hungary (18%) and in the U.S. (15%). During the same period early neonatal mortality rates decreased even more rapidly, between 26% in Cuba to 49% in Austria. The general pattern was that the ratios of early neonatal death to late fetal death tended to approach 1.0, with the exception of the U.S. and New Zealand. Moreover, there was some evidence that during the 1970s a general fall in perinatal mortality rates had occurred in many countries outside of those considered in the 1973 study. There is no indication of the eventual level below which reduction in perinatal death can be expected to occur. The data presented in the 1973 study showed that the level of perinatal mortality was due to the interplay of both social and biological factors.
