Yang C Y, Hsieh Y L
School of Public Health, Kaohsiung Medical College, Taiwan.
Jpn J Cancer Res. 1998 Apr;89(4):355-60. doi: 10.1111/j.1349-7006.1998.tb00571.x.
Many investigators have examined urbanization gradients in cancer rates. The purpose of this report was to identify urban-rural trends in cancer mortality rates (1982-1991) for municipalities in Taiwan. For this purpose, Taiwan's municipalities were classified as rural, suburban, urban, or metropolitan, using population density as an ordinal indicator of the degree of urbanization. Average annual age-adjusted, site-specific cancer mortality rates were calculated for both sexes within each population density group. Significant increasing trends with more urbanization were observed in mortality rates for cancers of the lung, pancreas, and kidney among both males and females, as well as male prostate cancer, and female breast and ovary cancer. In addition, this study revealed a significant rural excess for nonmelanoma skin cancer among both males and females, as well as male non-Hodgkin's lymphoma, and cancers of the female bone, and female connective tissue. Analytic studies for sites with consistent urban-rural trends may be fruitful in identifying the aspect of population density, or other unmeasured factors, that contribute to these trends.
许多研究人员都对癌症发病率的城市化梯度进行了研究。本报告的目的是确定台湾各市镇1982年至1991年癌症死亡率的城乡趋势。为此，以人口密度作为城市化程度的有序指标，将台湾的市镇分为农村、郊区、城市或大都市四类。计算了每个人口密度组内男女的平均年龄调整后的特定部位癌症死亡率。在男性和女性中，肺癌、胰腺癌和肾癌以及男性前列腺癌、女性乳腺癌和卵巢癌的死亡率随着城市化程度的提高呈现出显著的上升趋势。此外，该研究还发现，男性和女性的非黑色素瘤皮肤癌、男性非霍奇金淋巴瘤、女性骨癌和女性结缔组织癌在农村地区的发病率显著更高。对具有一致城乡趋势的部位进行分析研究，可能有助于确定导致这些趋势的人口密度或其他未测量因素。
