Volpi A, Di Buono R, Tosco P, Ragona G, Andreoni M
Boll Ist Sieroter Milan. 1982 May;61(2):128-35.
During the period 1951-1976 the annual mortality rate due to pneumonia decreased from about 60 deaths/100.000 to about 26 deaths/100.000. By studying the pattern of mortality in relation to the age of population, it is shown that pneumonia deaths in the elder group (greater than 60 year-old) progressively diminished from 1951 (266/100.000) to 1966 (125/100.000). After this year mortality rates showed to stabilize their levels. Pneumonia mortality among people with age between 0-5 years and 5-60 years showed a progressive decline during all the period here examined. At this time elder people seem to contribute to more than 80% of mortality from pneumonia in Italy.
在1951年至1976年期间，肺炎的年死亡率从约每10万人60例死亡降至约每10万人26例死亡。通过研究死亡率与人口年龄的关系模式发现，老年组（60岁以上）的肺炎死亡人数从1951年的每10万人266例逐渐减少至1966年的每10万人125例。从这一年之后，死亡率趋于稳定。在本研究考察的整个期间，0至5岁以及5至60岁人群的肺炎死亡率呈逐渐下降趋势。目前在意大利，老年人的肺炎死亡人数似乎占肺炎总死亡人数的80%以上。
