Persistent Area Socioeconomic Disparities in U.S. Incidence of Cervical Cancer, Mortality, Stage, and Survival, 1975–2000

Surveillance Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-8316, USA.
Cancer (Impact Factor: 4.89). 09/2004; 101(5):1051-7. DOI: 10.1002/cncr.20467
Source: PubMed


Temporal cervical cancer incidence and mortality patterns and ethnic disparities in patient survival and stage at diagnosis in relation to socioeconomic deprivation measures have not been well studied in the United States. The current article analyzed temporal area socioeconomic inequalities in U.S. cervical cancer incidence, mortality, stage, and survival.
County and census tract poverty and education variables from the 1990 census were linked to U.S. mortality and Surveillance, Epidemiology, and End Results cancer incidence data from 1975 to 2000. Age-adjusted incidence and mortality rates and 5-year cause-specific survival rates were calculated for each socioeconomic group and differences in rates were tested for statistical significance at the 0.05 level.
Substantial area socioeconomic gradients in both incidence and mortality were observed, with inequalities in cervical cancer persisting against a backdrop of declining rates. Cervical cancer incidence and mortality rates increased with increasing poverty and decreasing education levels for the total population as well as for non-Hispanic white, black, American Indian, Asian/Pacific Islander, and Hispanic women. Patients in lower socioeconomic census tracts had significantly higher rates of late-stage cancer diagnosis and lower rates of cancer survival. Even after controlling for stage, significant differences in survival remained. The 5-year survival rate among women diagnosed with distant-stage cervical cancer was approximately 30% lower in low than in high socioeconomic census tracts.
Census-based socioeconomic measures such as area poverty and education levels could serve as important surveillance tools for monitoring temporal trends in cancer-related health inequalities and targeting interventions.

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Available from: Ben Hankey, Jan 27, 2015
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    • "However, the incidence of ICC is not evenly distributed among racial/ethnic groups with African-American (AA) and Hispanics affected disproportionally higher than European American (EA) women [2]. Liquid-based cytology screening rates, whether self-reported or estimated from insurance claims data, are comparable among AAs and Hispanics compared with EAs and fail to explain the racial/ethnic disparity [3–5]. "
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    ABSTRACT: Purpose For poorly understood reasons, invasive cervical cancer (ICC) incidence and mortality rates are higher in women of African descent. Oncogenic human papillomavirus (HPV) genotypes distribution may vary between European American (EA) and African-American (AA) women and may contribute to differences in ICC incidence. The current study aimed at disentangling differences in HPV distribution among AA and EA women. Methods Five-hundred and seventy-two women were enrolled at the time of colposcopic evaluation following an abnormal liquid-based cytology screen. HPV infections were detected using HPV linear array, and chi-squared tests and linear regression models were used to compare HPV genotypes across racial/ethnic groups by CIN status. Results Of the 572 participants, 494 (86 %) had detectable HPV; 245 (43 %) had no CIN lesion, 239 (42 %) had CIN1, and 88 (15 %) had CIN2/3. Seventy-three percent of all women were infected with multiple HPV genotypes. After adjusting for race, age, parity, income, oral contraception use, and current smoking, AAs were two times less likely to harbor HPV 16/18 (OR 0.48, 95 % CI 0.21–0.94, p = 0.03) when all women were considered. This association remained unchanged when only women with CIN2/3 lesions were examined (OR 0.22, 95 % CI 0.05–0.95, p = 0.04). The most frequent high-risk HPV genotypes detected among EAs were 16, 18, 56, 39, and 66, while HPV genotypes 33, 35, 45, 58, and 68 were the most frequent ones detected in AAs. Conclusions Our data suggest that while HPV 16/18 are the most common genotypes among EA women with CIN, AAs may harbor different genotypes.
    Cancer Causes and Control 06/2014; 25(8). DOI:10.1007/s10552-014-0406-2 · 2.74 Impact Factor
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    • "The HPV vaccine is included in the Vaccines for Children (VFC) program which covers vaccine costs for children and teens without health insurance and for some children and teens who are underinsured [9]. Understanding the reasons for disparities in HPV vaccination rates is crucial because the populations that exhibit lower rates of HPV vaccination completion, African-Americans, Hispanics, and those living below the federal poverty level, have higher HPV related cancer rates [10] [11] [12]. Failure to increase vaccine uptake in these groups may worsen the disparities in HPV-related cancers and fail to prevent many HPV related cancer cases. "
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    Vaccine 05/2014; 32(33). DOI:10.1016/j.vaccine.2014.05.058 · 3.62 Impact Factor
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    • "Thus, the highest incidence for lung, lips-mouth-pharynx, esophagus, larynx, bladder and liver cancer in low socioeconomic status can be explained by a higher consumption of alcohol and tobacco in the most disadvantaged [5,18,19]. Similarly, the trend in over-incidence of cervical cancer in deprived women can be explained by sexual behaviors and/or lower participation in pap smear screening [20]. The highest incidence of cancers with unknown primary sites in males and females with a low socioeconomic status can be explained by the fact that the group of “unknown primary sites” mainly comprised subjects with metastatic cancers where the primary site could not be identified, a situation more frequent in people with a low socioeconomic status [21]. "
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    BMC Cancer 02/2014; 14(1):87. DOI:10.1186/1471-2407-14-87 · 3.36 Impact Factor
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