id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-259557-n46fbzae	Richmond, Peter	Coupling between death spikes and birth troughs. Part 1: Evidence	2018-09-15		.txt	text/plain	7319	476	71	In the wake of the influenza pandemic of 1889–1890 Jacques Bertillon, a pioneer of medical statistics, noticed that after the massive death spike there was a dip in birth numbers around 9 months later which was significantly larger than that which could be explained by the population change as a result of excess deaths. In the last section it is shown how the present coupling leads to predictions; it can explain in a unified way effects which so far have been studied separately, as for instance the impact on birth rates of heat waves. In 1892 Jacques Bertillon, a pioneer of medical statistics and one of the designers of the ''International Classification of Diseases'', published an analysis of the influenza pandemic of November 1889-February 1990 in which he showed that approximately 9 months after the climax of the epidemic a temporary birth rate trough (of an amplitude of about 20%) was observed in all countries where the pandemic has had a substantial impact, particularly Austria, France, Germany or Italy.	./cache/cord-259557-n46fbzae.txt	./txt/cord-259557-n46fbzae.txt