Cost-effectiveness of cervical-cancer screening in developing countries.
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Biomedical subjects
Publications and source records attributed to Eric J Suba.
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Papanicolaou screening is feasible anywhere that screening for cervical cancer, the leading cause of cancer-related death among women in developing countries, is appropriate. After documenting that the Vietnam War had contributed to the problem of cervical cancer in Vietnam, we participated in a grass roots effort to establish a nationwide cervical cancer prevention program in that country and performed root cause analyses of program deficiencies. We found that real-world obstacles to successful cervical cancer prevention in developing countries involve people far more than technology and that such obstacles can be appropriately managed through a systems approach focused on programmatic quality rather than through ideological commitments to technology. A focus on quality satisfies public health goals, whereas a focus on technology is compatible with market forces.
The Viet/American Cervical Cancer Prevention Project embraces a dual mission. We seek to develop sustainable, cost-effective cervical cancer prevention services for women in Vietnam. Because the problem of cervical cancer in Vietnam is in part a legacy of the Second Indochinese War, we also seek to examine obstacles to reconciliation by presenting what most acknowledge to be a remedy in advance of what some will perceive to be an accusation. Certain research and commercial interests have produced obstacles to our dual mission in Vietnam. The Alliance for Cervical Cancer Prevention, supported by the Bill and Melinda Gates Foundation, has failed to endorse Pap screening for developing countries and is conducting clinical trials which may further disaffect medically underserved groups. Visual screening techniques combined with immediate ablative treatment methods are incompatible with the requirements of "first do no harm." Because the Pap smear will probably be a component of any future human papillomavirus (HPV)-based or visual- based screening programs, it serves the interests of those promoting noncytologic screening methods to also support the development of Pap screening services. Research on HPV screening in developing countries raises concerns of commercial exploitation. Because Pap screening is feasible wherever cervical screening is appropriate, it is inappropriate to delay the development of Pap screening services pending research into HPV vaccines or alternative screening technologies. Quality management is the point at which public health and diagnostic pathology intersect and will remain an indispensable element of cervical screening programs irrespective of the screening test(s) eventually used. Pap screening in developing countries is an ethical imperative without a substantial political constituency and will benefit from the engagement of organized cytology.
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Decades ago, cervical cancer was the leading form of cancer among women in both North Vietnam and South Vietnam. Currently, cervical cancer rates are considerably lower in the northern region of the country. We performed a case-control study to measure factors associated with the development of cervical cancer among Vietnamese women. Questionnaire-based interviews were conducted with 202 women in southern Vietnam and 97 women in northern Vietnam. Case subjects were women hospitalized with cervical cancer. Control subjects were women hospitalized with extrauterine neoplasms. Data were analyzed using logistic regression, and odds ratios for the development of invasive cervical cancer were measured. The development of invasive cervical cancer was significantly associated with military service by husbands during the Second Indochinese War and with parity status. Odds ratio for the development of cervical cancer among southern Vietnamese women whose husbands had served in the armed forces was 2.6 (95% CI = 1.2-5.5). Odds ratio for the development of cervical cancer among northern women whose husbands had served in the armed forces was 3.9 (95% CI = 1.5-10.4) if their husbands had been stationed in South Vietnam during the war years. Northern women whose husbands had served in the military experienced no significant increase in cervical cancer risk if their husbands had been stationed in North Vietnam during the war years. Geographic and temporal variation in cervical cancer rates among Vietnamese women was associated with the movement of soldiers. These findings may be useful for cervical cancer prevention efforts in Vietnam and in other countries.
Disease prevention requires sociopolitical change, which in turn requires the participation of those for whom the change is intended, including demographic groups at high risk for disease, appropriate governmental authorities, and essential health care personnel. Multiparous women of lowest socioeconomic status, the demographic group at highest risk for the development of cervical cancer, lack sociopolitical leverage almost by definition. Pap screening in developing countries is an idea whose time has come, but it is also an ethical imperative currently lacking a substantial sociopolitical constituency. Noncytologic screening methods currently benefit from sponsorship by corporate manufacturers and by donor organizations such as the Bill and Melinda Gates Foundation. Pap screening efforts in developing countries will benefit from the involvement of cytology organizations based in developed countries. Future assessments of the progress of cervical cancer prevention efforts in developing countries will benefit from additional examination of the interactions between quality and sociopolitical obstacles to change. Many of these obstacles will be elucidated by following the money, as well as the science, involved in cervical screening activities.
Cervical cancer is the leading cause of cancer-related death among women in developing countries. Although progress is optional in all settings, Papanicolaou screening is feasible anywhere that cervical screening is appropriate and should be implemented without further delay in high-risk communities with access to curative treatment services. Successful prophylactic cervical cancer vaccines, prospects for which remain uncertain, will not eliminate requirements for cervical screening. The feasibility of human papillomavirus test analysis has not been demonstrated in low-resource developing country settings. Because past failures of cervical screening in developing countries are attributable to failures in programmatic quality rather than to technological limitations of the screening test, a shift in paradigmatic focus from technology toward quality is mandatory. Because visual screening techniques coupled with immediate ablative treatment are rendered obsolete by an embedded quality-control paradox, a moratorium should be placed on all such programs. Considerable opportunity costs, borne by the underserved, are associated with prioritizing research of novel interventions in developing countries when satisfactory interventions already exist.
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