Description: The influenza pandemic of 1918-20 is recognized as having generally taken place in three waves, starting in the northern spring and summer of 1918. This pattern of three waves, however, was not universal: in some locations influenza seems to have persisted into or returned in 1920. The recorded statistics of influenza morbidity and mortality are likely to be a significant understatement. Limitations of these data can include nonregistration, missing records, misdiagnosis, and nonmedical certification, and may also vary greatly between locations. Further research has seen the consistent upward revision of the estimated global mortality of the pandemic, which a 1920s calculation put in the vicinity of 21.5 million. A 1991 paper revised the mortality as being in the range 24.7-39.3 million. This paper suggests that it was of the order of 50 million. However, it must be acknowledged that even this vast figure may be substantially lower than the real toll, perhaps as much as 100 percent understated.

Description: This article discusses the crossover of mortality rates around age 81 after which age nonwhite mortality is lower than white mortality and presents the best age statement data available from Medicare statistics.

Description: This article contains a listing of the publications of the National Center for Health Statistics. Copies of any of the listed publications can be obtained from the National Center for Health Statistics, Rockville, Maryland. In ordering, the series number and the number within the series should be given.

Description: Summary of the Internal Revenue Service study on demographic and financial characteristics of the top wealthholders of the United States and a review of Metropolitan Life's mortality exerience for this group.

Description: This article provides an analysis of the AIDS case data collected and made available by the Centers for Disease Control. The CDC data base is at the individual level and includes age at diagnosis, date of diagnosis, sex, sexual preference, locale, type of infection transmission, etc.