Teschke K, Barroetavena M C
Department of Health Care and Epidemiology, University of British Columbia, Vancouver.
CMAJ. 1992 Nov 15;147(10):1501-7.
To examine the reporting of cases of occupational cancer in Canada in order to determine reporting requirements, the availability of data, the characteristics of reported cancers and the completeness of reporting.
Descriptive epidemiologic study based on data requested from workers' compensation boards (WCBs) and cancer registries in each province and territory from 1980 to 1989.
The number of claims accepted and rejected by the WCBs; year of claim, cancer site, sex of claimant, age of claimant at diagnosis, occupation, industry, exposure agent and reasons for rejection of claims; and new primary cancers according to site, age and sex.
Reporting of occupational cancer by physicians is required in Alberta, Saskatchewan and Newfoundland. Only British Columbia, Saskatchewan and Ontario were able to provide all the requested information about the claims. Of the 1026 claims in these three provinces almost all were by men, and about two-thirds were for cancers of the respiratory tract. Asbestos was listed as the etiologic agent in more than one-third of the cases. A comparison of the proportion of incident cancers accepted as occupational by the WCBs with the estimated proportion of cancers in the general population attributable to occupation (based on population-attributable risk percentages from epidemiologic data) suggests that less than 10% of occupational cancers [corrected] are compensated. The main source of the deficit is underreporting to WCBs rather than rejection of claims.
The availability of data about occupational cancers in Canada is inconsistent from jurisdiction to jurisdiction, and reporting is incomplete. An active disease surveillance system and additional education of physicians and workers about work-related illnesses may be required to improve reporting.
调查加拿大职业性癌症病例的报告情况，以确定报告要求、数据的可获得性、报告的癌症特征以及报告的完整性。
基于1980年至1989年从各省和地区的工人赔偿委员会（WCB）及癌症登记处获取的数据进行描述性流行病学研究。
WCB接受和拒绝的索赔数量；索赔年份、癌症部位、索赔者性别、诊断时索赔者年龄、职业、行业、接触因素以及索赔被拒绝的原因；以及按部位、年龄和性别划分的新发原发性癌症。
艾伯塔省、萨斯喀彻温省和纽芬兰要求医生报告职业性癌症。只有不列颠哥伦比亚省、萨斯喀彻温省和安大略省能够提供所有关于索赔的所需信息。在这三个省的1026起索赔中，几乎全部是男性提出的，约三分之二是呼吸道癌症。超过三分之一的病例将石棉列为病因。将WCB接受为职业性的发病癌症比例与根据流行病学数据的人群归因风险百分比估计的职业性癌症在一般人群中的比例进行比较，结果表明，不到10%的职业性癌症[校正后]得到了赔偿。亏空的主要来源是向WCB报告不足，而非索赔被拒绝。
加拿大各辖区关于职业性癌症的数据可获得性不一致，报告不完整。可能需要一个活跃的疾病监测系统，并对医生和工人进行更多关于与工作相关疾病的教育，以改善报告情况。
