Cancer Mortality in Cuba
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through July-December 1986, data from the Drug Abuse Warn- 8. National Institute on Drug Abuse: Semiannual report, trend data ing Network (DAWN). Statistical series G, No. 19. DHHS Pub- through December 1989, data from the Drug Abuse Warning lication No. (ADM) 87-1529. U.S. Government Printing Network (DAWN). Statistical series G, No. 24. DHHS Publica- Office, Washington, DC, 1987. tion No. (ADM) 90-1664. U.S. Government Printing Office, 7. National Institute on Drug Abuse: Semiannual report, trend data Washington, DC, 1990. through January-June 1988, data from the Drug Abuse Warning 9. National Institute on Drug Abuse: Annual data 1989, data from Network (DAWN). Statistical series G, No. 22. DHHS Publica- the Drug Abuse Warning Network (DAWN). Statistical series I, tion No. (ADM) 89-1607. U.S. Government Printing Office, No. 9. DHHS Publication (ADM) 90-1717. U.S. Government Washington, DC, 1989. Printing Office, Washington, DC, 1990. Cancer Mortality in Cuba and Among the Cuban-Born in Cuba, cancer of the lung and cancer of the prostate, in the United States: 1979-81 because of their relatively high death rates. The age- adjusted death ratesfor both of these cancers are lower among the Cuban-born in the United States than they DONNA SHAI, PhD are among Cubans in Cuba and whites in the United States. Death rates for cancer of the cervix and cancer Dr. Shai is Assistant Professor of Sociology, Department of Sociol- of the rectum among the Cuban-born in this country are ogy, Villanova University, Villanova, PA, 19085. This research was supported by Grant No. HD20089, National also low relative to Cubans in Cuba and whites in the Institute of Child Health and Human Development. United States. Stomach cancer mortality among Cuban- Tearsheet requests to Dr. Shai. born men in the United States is lower than for men in Cuba orfor white men in the United States, but Cuban- Synopsis ..................................... born women in this country have rates that are slightly higher than those of U.S. white women. Mortality rates The Cuban-born population of the United States, from colon cancer in both sexes and breast cancer enumerated at 608,000 in the 1980 census, has been among women are intermediate between the lower rates little studied with regard to cancer mortality. Being in Cuba and the higher rates among U.S. whites. older and rarely migrating back to Cuba, Cuban Amer- Finally, the Cuban-born in the United States have icans present a good subject for comparative cancer higher death rates from cancer of the liver than do mortality. Age-adjusted death rates for selected causes Cubans in Cuba or whites in the United States. of cancer are compared in this paper for Cubans in Cuba, the Cuban-born in the United States, and all In general, the profile foundfor the Cuban-born in whites in the United States. the United States reflects the high socioeconomic status of the pre-1980 migrants as well as their exposure to Two forms of cancer have been ofparticular concern the U.S. environment. CUBAN IMMIGRANTS to the United States constitute immigrants are not a representative cross-section of the an interesting group for the study of health and migra- Cuban population and, until recently, have been dispro- tion. They are older and include enough people of the portionately affluent, urban, older, and well-educated, ages at which cancer becomes a major cause of mor- with white collar occupations. All of these characteris- tality. In the 1980 census (as of April 1), they num- tics are known to be associated with certain forms of bered 608,000 (1). Also, because of the political nature cancer. In addition, epidemiologists have pointed out of the migration, there has been relatively little reverse that persons who choose to migrate are a selective pop- migration. For cancer research it is especially important ulation of the healthy (3). Therefore, on the average, that immigrants experience a long and relatively unin- we might expect that those who left Cuba tended to be terrupted period in a new society, since many cancers in relatively good health, at least prior to 1980. develop over decades following exposure. When mor- Before the 1959 Cuban revolution, mortality in Cuba tality is the end-point, the period is even longer (2). was typical of developing countries, with a low life On the other hand, there are limitations regarding the expectancy at birth, 58 years in 1959 (4), and with rela- comparative study of cancers among Cubans on the tively high rates of infectious and parasitic diseases (5). island and the Cuban-bom in the United States. Cuban By 1989, Cuban life expectancy had reached 74 years, 68 PubUc Halth Reports compared with 75 in the United States (6). This Table 1. Age-adjusted death rates' per 100,000 population from selected causes of cancer in Cuba and in the United States by increase was due largely to the establishment of medical sex, 1969-72 and 1981-83 schools and to public health measures taken to provide the entire population with primary health care (4). As a 21969-72 31981-83 result, the major causes of death are now cardiovascular Cause Cuba U.S. Cuba U.S. diseases and cancers, typical of countries at a high level of social and economic development. Men: The most important form of cancer among men in Lung (trachea and bronchus).. 24.3 6.9 21.6 31.6 Stomach .................... 7.9 4.5 4.9 3.2 Cuba is cancer of the lung. Statistics published by the Women: Pan American Health Organization at the beginning of Lung (trachea and bronchus).. 8.7 5.8 8.1 11.5 the 1970s show that the age-adjusted death rate for lung Breast ...................... 9.1 13.8 8.9 13.5 a Stomach .................... 3.8 2.2 2.5 1.6 cancer (standardized to Latin American 1960 popula- Cervix uter .................. 3.4 3.4 3.2 1.9 tion) for Cuban males was the fourth highest in the Americas, although lower than the U.S. rate (7). Cuban 'Age-adjusted to a 1960 Latin American population. 2Reference 7. women had the highest death rate from lung cancer in 3Reference 8. the Americas. By the early 1980s, the rate for men was the fifth highest, while the rate for women was the sec- in United States and in other registries (21). Cuban ond highest after the United States (8 and table 1). rates are of interest since Cuba is one of the countries The causes of the relatively high mortality rates from that has used radiation therapy for benign conditions of lung cancer in Cuba have been attributed to the the head and neck. Use of radiation therapy in child- extremely high per capita cigarette consumption, one of hood conditions is believed to be linked to the incidence the highest in the world (4). In a study of the incidence of thyroid cancer in young adult females (21). of lung cancer in Havana, Joly and coworkers found Other studies of cancer incidence in Cuba involve that an additional factor was the use of dark tobacco relatively uncommon cancers, such as three cases of and nonfilter cigarettes (9). Since 1983 there has been bladder cancer in Cubans that were uncovered by endo- an intensification in Cuba of the public health campaign scopic study for schistosomiasis (22), cancer of the oral against smoking to reduce lung cancer (4). cavity (23), nasopharyngeal cancer (24, 25), gastric Prostate cancer is a serious health problem in Cuba cancer (26), Burkitt's lymphoma (27), and a number of and was the second leading cause of cancer death after studies of malignant tumors in children (28, 29). lung cancer among men in Cuba during the 1970s (10) Very little has been published on cancer among the and early 1980s (8). While the death rates from prostate Cuban-born in the United States. To my knowledge, cancer for Cuban males are intermediate for the Amer- only three publications deal with cancer in this popula- icas as are those of the United States, Cuban rates tion. Rosenwaike (30) discussed mortality among the exceed those of U.S. males (8). Attempts to reduce Cuban-born, including cancer mortality, in comparison mortality by irradiation are ongoing in Cuba (10). with other Hispanic subgroups in the United States, the The breast was the most important site of cancer Mexican born and Puerto Rican born. Although all among women in Cuba as it was among women in the three subpopulations have cancer death rates lower than United States in 1979-81 (11). By 1985 breast cancer that of United States whites and blacks, the Cuban born was surpassed by lung cancer among women (12). had the highest death rate among Hispanic subgroups Compared with the United States, breast cancer death for all cancers. The same pattern held for lung cancer rates in Cuba are relatively low as they are in many among Cuban-born men and for breast cancer among. Latin American countries. In the early 1970s, Cuba women. The exception to the profile was lung cancer ranked eighth of 22 countries in the Americas for breast among Cuban-born women which was lower than cancer, while the United States ranked third (7). By the among Mexican-born women, as well as whites and early 1980s, Cuba ranked 11th while the United States blacks in this country (30). ranked 6th (8). With respect to breast cancer incidence Rosenwaike and Shai (31) examined cancer mortality worldwide, Cuba ranked intermediate among nations among the Cuban-born in the United States before and studied in 1970, while women in Connecticut ranked after the Mariel migration of 1980.