[Infective diseases in the urban districts of Cagliari in 1980-1985].
The purpose of this paper is to study the incidence of 8 infectious diseases (viral hepatitis, tuberculosis, salmonellosis, chickenpox, whooping cough, measles, parotitis, rubella) in the 13 districts of the city of Cagliari. The 13 districts are different for demography, population density, socio-economic status. We studied the cases notified and we calculated the age-specific incidence rates of the whole city for the years 1980-1985. We also calculated the crude incidence rate for each district. In order to get over the problem of the different age structures of the districts populations we used the indirect method of standardization and we applied the age-specific rates of the city (standard rates) to the district population to determine the number of cases expected in each age group of the district population. The ratio of the total observed cases to the total expected cases is the Standardized Incidence Ratio (SIR). The confidence interval of SIR (95%) is given by SIR +/- 196 *square root of d/(sigma Pi Mi) where d = cases in district population; Pi = population in age group i in district population; Mi = rate in age group i in standard population. The incidence of viral hepatitis is higher between 20 and 29 years and then it declines very fast (--84% in ten years). The age distribution of tuberculosis is bimodal having the first peak between 20 and 29 years and the second one in the oldest age group. The incidence of salmonellosis, chickenpox, whooping cough, measles, parotitis and rubella declines with increasing age. The incidence of viral hepatitis in the districts 1, 3, 5, 6, 7, 9 and in Monserrato (outlying village) is higher than the incidence in the whole city; the confidence intervals, that are not too high, are suggestive for the precision of the estimate. As far as tuberculosis is concerned we can recognize a high incidence in the districts 1, 3, 5, 6, 7, 9, 10, in Elmas and in Monserrato (outlying villages), but the confidence intervals are very large. The incidence of salmonellosis is high in the districts 6 and 9 and in the outlying villages. Goals for future research include the role of correlation studies to test hypotheses about the association between socio-economic status and infectious diseases.
Contu
P
P
Salis
F
F
Dodero
G
G
Martignetti
G
G
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002644:Chickenpox / Q000453:epidemiology; D002648:Child; D015331:Cohort Studies; D003141:Communicable Diseases / Q000453:epidemiology*; D006525:Hepatitis, Viral, Human / Q000453:epidemiology; D006801:Humans; D007558:Italy / Q000453:epidemiology; D008457:Measles / Q000453:epidemiology; D008875:Middle Aged; D010309:Parotitis / Q000453:epidemiology; D012409:Rubella / Q000453:epidemiology; D012480:Salmonella Infections / Q000453:epidemiology; D014376:Tuberculosis / Q000453:epidemiology; D014917:Whooping Cough / Q000453:epidemiology
Malattie infettive nel comune di Cagliari negli anni 1980-1985.