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  • 1
    ISSN: 1573-7225
    Keywords: Cancer surveillance system ; cervical intra-epithelial neoplasia ; cutaneous melanoma ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Stimulated by a recent report from a Norwegian pathology institute of an excess risk of melanoma among women with cervical neoplasia, we analyzed the relevant data from a population-based cancer registry serving western Washington State (United States). Among 11,693 women diagnosed with cervicalintra-epithelial neoplasia (CIN) between 1974 and 1989 who were followed-up for at least a year, 14 cases of cutaneous melanoma were identified, in comparison with 13.7 cases expected (relative risk=1.0,95 percent confidence interval=0.5-1.7) based on the rates of melanoma among all women who resided in this area. While these results are at odds with those recently reported from the pathology institute, they are similar to those obtained in previous cancer-registry studies in several countries, which found little or no excess occurrence of melanoma following cervical cancer.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-7225
    Keywords: Cancer ; census ; epidemiology ; methodology ; marital status ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In registry-based population studies on marital status in relation to cancer, incidence rates sometimes have been calculated using marital status-specific populations that have been estimated by interpolation and extrapolation from census data as a denominator. Alternatively, other cancers from the same registry have been used to estimate the proportion of the population in each marital-status category in the calculation of the relative risk (RR) of a given cancer. Using cancer registry data from four United States populations for the years 1979–87, we compared the relative incidence estimated using each of the two methods. For selected cancers diagnosed during 1979–81, the age-adjusted risks of never-married Black persons were 1.5 to 2.2 times those of married persons when the population size was estimated from census data. The corresponding RRs were 0.7 to 1.1 when the ‘control’ cancers were used. Among Whites, the differences between the two methods were about 20 to 30 percent. For both races, the difference between the methods was greater still for the years for which we relied on extrapolation to estimate the population (1981–87). The differences between the risk estimates from the two methods may be related to underenumeration in the census, inconsistent definitions of marital status between cancer registries and the census, errors in the extrapolation of the population, and/or the possible association of the incidence of ‘control’ cancers with marital status. In the US, while each method has some potential for bias, we believe that the likelihood of bias is relatively greater using the censusbased method.
    Type of Medium: Electronic Resource
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