Nakagawa H, Tabata M, Morikawa Y, Kitagawa Y, Senma M, Kanamori C, Kawano S
Department of Public Health, Kanazawa Medical University.
Nihon Eiseigaku Zasshi. 1990 Feb;44(6):1059-64. doi: 10.1265/jjh.44.1059.
A follow-up study was carried out from January 1967 to December 1986 on 148 patients with Itai-itai disease, 130 suspected patients (persons requiring observation), and 212 controls who were living in the same community as patients with Itai-itai disease. The relative survival rates for the three groups were calculated from a life expectancy table. Except for 1973 data, comparison of the annual data from 1968 to 1986 showed that the relative survival rates in the patient group were significantly lower than those in the control group. The relative survival rates in the suspected patient group were significantly lower than those in the control group between 1981 and 1986. Recently the differences of the relative survival rates between the patient group and the suspected patient group have become smaller and are not significant. These results show the long-lasting influence of Itai-itai disease on the prognoses of patients and suspected patients.
1967年1月至1986年12月，对148例痛痛病患者、130例疑似患者（需要观察的人）以及212名与痛痛病患者居住在同一社区的对照者进行了一项随访研究。根据寿命表计算了三组的相对生存率。除1973年的数据外，对1968年至1986年的年度数据进行比较发现，患者组的相对生存率显著低于对照组。1981年至1986年期间，疑似患者组的相对生存率显著低于对照组。最近，患者组和疑似患者组之间相对生存率的差异变得更小且无统计学意义。这些结果表明痛痛病对患者和疑似患者的预后有长期影响。
