Binder Maria Cecília Pereira, Cordeiro Ricardo
Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil.
Rev Saude Publica. 2003 Aug;37(4):409-16. doi: 10.1590/s0034-89102003000400004. Epub 2003 Aug 20.
To estimate the number of occupational accidents that occurred in a certain municipality during a specific period of time as well as the extent of sub-registration.
The study sample was comprised of 4.782 households within the municipality of Botucatu, São Paulo occupied by a total 17,219 inhabitants on the 1st of July, 1997. In each household, an adult inhabitant was interviewed in order to identify the occurrence of occupational accidents in the three months preceding the interview. When such occurrences were identified, the injured workers were interviewed. The Cochran formula was utilized to calculate the confidence interval.
Seventy-six individuals confirmed that they had suffered occupational accidents during these three months. In 1997, there were approximately 1,810 occupational accidents in Botucatu, according to our estimates, and the incidence of work related injuries in the population was approximately 4.1% (CI 95% 3.0%-5.3%). Thirty-nine (51.3%, CI 95% 41.1%61.6%) of the above 76 workers were not covered by the Social Security System. Consequently, their injuries were not reported for there was no legally binding obligation to fill out and emit the official registration form - Comunicação de Acidente do Trabalho (CAT) [the work injury report]. Included among the latter are civil servants and informal sector workers, such as self-employed, casual workers and others. Although the remaining 37 workers (48.7%) were covered by the Social Security System and emission of the work injury report was obligatory, 20 of the cases (54.1% CI 95% 39.4%-68.7%) had not been registered. A greater proportion of cases of sub-registration were found among those workers employed in micro, small and medium sized businesses than among those working in large firms. Only 22.4% (CI 13.8%-30.9%) of the occupational accidents reported in this study were registered by the Social Security System.
Research findings confirm that analyses based on the number of officially registered workplace accidents are limited. It highlights the importance of utilizing other sources of data, besides the registration form for occupational accidents used currently by the Social Security System, Comunicação de Acidente do Trabalho or CAT, in order to elaborate official statistics on occupational accidents.
估算某城市在特定时间段内发生的职业事故数量以及漏报程度。
研究样本包括圣保罗州博图卡图市的4782户家庭，1997年7月1日共有17219名居民。在每户家庭中，采访一名成年居民，以确定在采访前三个月内是否发生职业事故。确定有此类事故发生后，对受伤工人进行采访。采用 Cochr an公式计算置信区间。
76人确认在这三个月内遭受了职业事故。根据我们的估计，1997年博图卡图市约有1810起职业事故，人群中与工作相关的受伤发生率约为4.1%（95%置信区间3.0%-5.3%）。上述76名工人中有39人（51.3%，95%置信区间41.1%-61.6%）未参加社会保障体系。因此，由于没有填写和提交官方登记表——工伤报告（CAT）的法律约束义务，他们的受伤情况未被报告。后者包括公务员和非正规部门工人，如个体经营者、临时工等。虽然其余37名工人（48.7%）参加了社会保障体系且提交工伤报告是强制性的，但其中20起案例（54.1%，95%置信区间39.4%-68.7%）未被登记。在微型、小型和中型企业工作的工人中，漏报案例的比例高于在大公司工作的工人。本研究报告的职业事故中，只有22.4%（置信区间13.8%-30.9%）被社会保障体系登记。
研究结果证实，基于官方登记的工作场所事故数量进行的分析是有限的。这凸显了除社会保障体系目前使用的职业事故登记表（工伤报告或CAT）之外，利用其他数据来源来编制职业事故官方统计数据的重要性。
