Hepatitis A data

Description

A dataset on the prevalence of hepatitis A in individuals from Bulgaria with age ranging from 1 to 86 years. The data consists of a cross-sectional survey conducted in 1964.

Usage

hepatitisA

Format

A data frame with 83 rows and three variables:

t

Age of the individual

freq1

Number of individuals of age t that are seropositive for Hepatitis A

freq2

Total number of individuals of age t

References

Keiding, N. (1991). Age-specic incidence and prevalence: a statistical perspective. J. Roy. Statist. Soc. Ser. A,154(3):371-412.